diff --git a/bukkit/src/main/java/net/momirealms/craftengine/bukkit/sound/BukkitSoundManager.java b/bukkit/src/main/java/net/momirealms/craftengine/bukkit/sound/BukkitSoundManager.java
index ad53f6d70..3d2491f0b 100644
--- a/bukkit/src/main/java/net/momirealms/craftengine/bukkit/sound/BukkitSoundManager.java
+++ b/bukkit/src/main/java/net/momirealms/craftengine/bukkit/sound/BukkitSoundManager.java
@@ -2,12 +2,14 @@ package net.momirealms.craftengine.bukkit.sound;
 
 import com.google.gson.JsonElement;
 import com.google.gson.JsonObject;
+import net.momirealms.craftengine.bukkit.api.CraftEngineFurniture;
 import net.momirealms.craftengine.bukkit.nms.FastNMS;
 import net.momirealms.craftengine.bukkit.plugin.reflection.minecraft.CoreReflections;
 import net.momirealms.craftengine.bukkit.plugin.reflection.minecraft.MBuiltInRegistries;
 import net.momirealms.craftengine.bukkit.plugin.reflection.minecraft.MRegistries;
 import net.momirealms.craftengine.bukkit.util.ComponentUtils;
 import net.momirealms.craftengine.bukkit.util.KeyUtils;
+import net.momirealms.craftengine.core.entity.furniture.AnchorType;
 import net.momirealms.craftengine.core.plugin.CraftEngine;
 import net.momirealms.craftengine.core.sound.AbstractSoundManager;
 import net.momirealms.craftengine.core.sound.JukeboxSong;
@@ -15,6 +17,7 @@ import net.momirealms.craftengine.core.util.AdventureHelper;
 import net.momirealms.craftengine.core.util.GsonHelper;
 import net.momirealms.craftengine.core.util.Key;
 import net.momirealms.craftengine.core.util.VersionHelper;
+import org.bukkit.Location;
 
 import java.io.IOException;
 import java.nio.file.Files;
diff --git a/common-files/src/main/resources/config.yml b/common-files/src/main/resources/config.yml
index 2d2a2967c..bed42747b 100644
--- a/common-files/src/main/resources/config.yml
+++ b/common-files/src/main/resources/config.yml
@@ -94,17 +94,9 @@ resource-pack:
       resolution:
         type: merge_font
   # Validate if there is any error in the resource pack, such as missing textures or models.
-  # Validation may not always be accurate due to the presence of resource pack overlays.
   # If your resource pack is compliant with the standard, you can disable validation to improve the resource pack generation speed.
   validation:
     enable: true
-    # Determines on which versions the resource pack validation will be performed.
-    # Allowed values:
-    # - 1.20.1, 1.21, 1.21.8, etc.
-    # - latest: the latest client version
-    # - server: the current server version
-    test-versions:
-      - server
     # Fix textures that are not within the atlas. It is unreasonable to always rely on plugins to fix your mistakes.
     # CraftEngine will only fix the atlas of resource pack under the first version specified in the test-versions.
     # You should strive to make your resource pack more standardized after gaining some experience with resource packs.
diff --git a/common-files/src/main/resources/translations/en.yml b/common-files/src/main/resources/translations/en.yml
index 9bc16b149..a524baa1a 100644
--- a/common-files/src/main/resources/translations/en.yml
+++ b/common-files/src/main/resources/translations/en.yml
@@ -40,14 +40,16 @@ argument.parse.failure.either: "<red>Could not resolve <arg:1> or <arg:2> from '
 argument.parse.failure.namedtextcolor: "<red>'<arg:0>' is not a named text color</red>"
 info.pack.load: "Loaded pack: <arg:0>. Default namespace: <arg:1>"
 info.resource.load: "Loaded <arg:0> in <arg:1>ms (<arg:2>)"
-info.resource_pack.start: "Generating resource pack..."
-info.resource_pack.generate: "Generated resource pack in <arg:0>ms"
-info.resource_pack.validate: "Validated resource pack in <arg:0>ms"
-info.resource_pack.optimize: "Optimized resource pack in <arg:0>ms"
+info.resource_pack.generate.start: "Generating resource pack..."
+info.resource_pack.generate.finish: "Generated resource pack in <arg:0>ms"
+info.resource_pack.validate.start: "Validating resource pack... (Progress: <arg:0>/<arg:1> | Pack Format: <arg:2>~<arg:3> | Overlays: <arg:4>)"
+info.resource_pack.validate.finish: "Validated resource pack in <arg:0>ms"
 info.resource_pack.optimize.json: "> Optimizing json files..."
 info.resource_pack.optimize.texture: "> Optimizing textures..."
 info.resource_pack.optimize.result: "□ Before/After/Ratio: <arg:0>/<arg:1>/<arg:2>%"
-info.resource_pack.create: "Created resource pack zip in <arg:0>ms"
+info.resource_pack.optimize.finish: "Optimized resource pack in <arg:0>ms"
+info.resource_pack.create.start: "Creating the resource pack zip..."
+info.resource_pack.create.finish: "Created resource pack zip in <arg:0>ms"
 info.resource_pack.upload: "Completed uploading resource pack"
 info.host.self.netty_server: "Netty HTTP server started on port: <arg:0>"
 info.host.cache.load: "[<arg:0>] Loaded cached resource pack metadata"
diff --git a/common-files/src/main/resources/translations/zh_cn.yml b/common-files/src/main/resources/translations/zh_cn.yml
index babcafa21..cbe3894bc 100644
--- a/common-files/src/main/resources/translations/zh_cn.yml
+++ b/common-files/src/main/resources/translations/zh_cn.yml
@@ -40,14 +40,16 @@ argument.parse.failure.either: "<red>无法从 '<arg:0>' 解析 <arg:1> 或 <arg
 argument.parse.failure.namedtextcolor: "<red>'<arg:0>' 不是颜色代码</red>"
 info.pack.load: "已加载包: <arg:0>. 默认命名空间: <arg:1>"
 info.resource.load: "加载 <arg:0> 耗时 <arg:1>ms (<arg:2>)"
-info.resource_pack.start: "正在开始生成资源包..."
-info.resource_pack.generate: "生成资源包耗时 <arg:0>ms"
-info.resource_pack.validate: "验证资源包耗时 <arg:0>ms"
-info.resource_pack.optimize: "优化资源包耗时 <arg:0>ms"
+info.resource_pack.generate.start: "正在开始生成资源包..."
+info.resource_pack.generate.finish: "生成资源包耗时 <arg:0>ms"
+info.resource_pack.validate.start: "正在验证资源包... (进度: <arg:0>/<arg:1> | 资源包格式: <arg:2>~<arg:3> | 叠加资源包: <arg:4>)"
+info.resource_pack.validate.finish: "验证资源包耗时 <arg:0>ms"
 info.resource_pack.optimize.json: "> 正在优化json文件..."
 info.resource_pack.optimize.texture: "> 正在优化贴图文件..."
 info.resource_pack.optimize.result: "□ 优化前/优化后/比例: <arg:0>/<arg:1>/<arg:2>%"
-info.resource_pack.create: "创建资源包文件耗时 <arg:0>ms"
+info.resource_pack.optimize.finish: "优化资源包耗时 <arg:0>ms"
+info.resource_pack.create.start: "正在创建资源包压缩文件..."
+info.resource_pack.create.finish: "创建资源包文件耗时 <arg:0>ms"
 info.resource_pack.upload: "资源包上传完成"
 info.host.self.netty_server: "Netty HTTP 服务已在端口 <arg:0> 开启"
 info.host.cache.load: "[<arg:0>] 已加载缓存的资源包元数据"
diff --git a/core/src/main/java/net/momirealms/craftengine/core/item/AbstractItemManager.java b/core/src/main/java/net/momirealms/craftengine/core/item/AbstractItemManager.java
index a1dbf343a..9921fb300 100644
--- a/core/src/main/java/net/momirealms/craftengine/core/item/AbstractItemManager.java
+++ b/core/src/main/java/net/momirealms/craftengine/core/item/AbstractItemManager.java
@@ -406,19 +406,19 @@ public abstract class AbstractItemManager<I> extends AbstractModelGenerator impl
         }
 
         private boolean isModernFormatRequired() {
-            return Config.packMaxVersion().isAtOrAbove(MinecraftVersions.V1_21_4);
+            return Config.packMaxVersion().isAtOrAbove(MinecraftVersion.V1_21_4);
         }
 
         private boolean needsLegacyCompatibility() {
-            return Config.packMinVersion().isBelow(MinecraftVersions.V1_21_4);
+            return Config.packMinVersion().isBelow(MinecraftVersion.V1_21_4);
         }
 
         private boolean needsCustomModelDataCompatibility() {
-            return Config.packMinVersion().isBelow(MinecraftVersions.V1_21_2);
+            return Config.packMinVersion().isBelow(MinecraftVersion.V1_21_2);
         }
 
         private boolean needsItemModelCompatibility() {
-            return Config.packMaxVersion().isAtOrAbove(MinecraftVersions.V1_21_2) && VersionHelper.isOrAbove1_21_2(); //todo 能否通过客户端包解决问题
+            return Config.packMaxVersion().isAtOrAbove(MinecraftVersion.V1_21_2) && VersionHelper.isOrAbove1_21_2(); //todo 能否通过客户端包解决问题
         }
 
         public Map<Key, IdAllocator> idAllocators() {
diff --git a/core/src/main/java/net/momirealms/craftengine/core/pack/AbstractPackManager.java b/core/src/main/java/net/momirealms/craftengine/core/pack/AbstractPackManager.java
index 01d973b46..95b195f93 100644
--- a/core/src/main/java/net/momirealms/craftengine/core/pack/AbstractPackManager.java
+++ b/core/src/main/java/net/momirealms/craftengine/core/pack/AbstractPackManager.java
@@ -20,6 +20,8 @@ import net.momirealms.craftengine.core.pack.host.ResourcePackHosts;
 import net.momirealms.craftengine.core.pack.host.impl.NoneHost;
 import net.momirealms.craftengine.core.pack.mcmeta.Overlay;
 import net.momirealms.craftengine.core.pack.mcmeta.PackMcMeta;
+import net.momirealms.craftengine.core.pack.mcmeta.PackVersion;
+import net.momirealms.craftengine.core.pack.mcmeta.overlay.OverlayCombination;
 import net.momirealms.craftengine.core.pack.model.ItemModel;
 import net.momirealms.craftengine.core.pack.model.LegacyOverridesModel;
 import net.momirealms.craftengine.core.pack.model.ModernItemModel;
@@ -742,8 +744,8 @@ public abstract class AbstractPackManager implements PackManager {
     }
 
     @Override
-    public void generateResourcePack() throws Exception {
-        this.plugin.logger().info(TranslationManager.instance().translateLog("info.resource_pack.start"));
+    public void generateResourcePack() {
+        this.plugin.logger().info(TranslationManager.instance().translateLog("info.resource_pack.generate.start"));
         long time1 = System.currentTimeMillis();
 
         // Create cache data
@@ -791,19 +793,22 @@ public abstract class AbstractPackManager implements PackManager {
                 this.removeAllShaders(generatedPackPath);
             }
             long time2 = System.currentTimeMillis();
-            this.plugin.logger().info(TranslationManager.instance().translateLog("info.resource_pack.generate", String.valueOf(time2 - time1)));
+            this.plugin.logger().info(TranslationManager.instance().translateLog("info.resource_pack.generate.finish", String.valueOf(time2 - time1)));
             if (Config.validateResourcePack()) {
-                for (MinecraftVersion version : Config.validationTestVersions()) {
-                    this.validateResourcePack(generatedPackPath, version);
-                }
+                this.validateResourcePack(generatedPackPath);
             }
             long time3 = System.currentTimeMillis();
-            this.plugin.logger().info(TranslationManager.instance().translateLog("info.resource_pack.validate", String.valueOf(time3 - time2)));
+            if (Config.validateResourcePack()) {
+                this.plugin.logger().info(TranslationManager.instance().translateLog("info.resource_pack.validate.finish", String.valueOf(time3 - time2)));
+            }
             if (Config.optimizeResourcePack()) {
                 this.optimizeResourcePack(generatedPackPath);
             }
             long time4 = System.currentTimeMillis();
-            this.plugin.logger().info(TranslationManager.instance().translateLog("info.resource_pack.optimize", String.valueOf(time4 - time3)));
+            if (Config.optimizeResourcePack()) {
+                this.plugin.logger().info(TranslationManager.instance().translateLog("info.resource_pack.optimize.finish", String.valueOf(time4 - time3)));
+            }
+            this.plugin.logger().info(TranslationManager.instance().translateLog("info.resource_pack.create.start"));
             Path finalPath = resourcePackPath();
             Files.createDirectories(finalPath.getParent());
             try {
@@ -812,8 +817,10 @@ public abstract class AbstractPackManager implements PackManager {
                 this.plugin.logger().severe("Error zipping resource pack", e);
             }
             long time5 = System.currentTimeMillis();
-            this.plugin.logger().info(TranslationManager.instance().translateLog("info.resource_pack.create", String.valueOf(time5 - time4)));
+            this.plugin.logger().info(TranslationManager.instance().translateLog("info.resource_pack.create.finish", String.valueOf(time5 - time4)));
             this.generationEventDispatcher.accept(generatedPackPath, finalPath);
+        } catch (IOException e) {
+            this.plugin.logger().severe("Error generating resource pack", e);
         }
     }
 
@@ -1177,8 +1184,7 @@ public abstract class AbstractPackManager implements PackManager {
         }
     }
 
-    @SuppressWarnings("DuplicatedCode")
-    private void validateResourcePack(Path path, MinecraftVersion version) {
+    private void validateResourcePack(Path path) {
         Path packMcMetaPath = path.resolve("pack.mcmeta");
         PackMcMeta packMeta;
         try {
@@ -1188,27 +1194,150 @@ public abstract class AbstractPackManager implements PackManager {
             return;
         }
 
-        // 获取当前版本生效的overlays
-        List<String> overlayDirectories = new ArrayList<>();
-        for (Overlay overlay : packMeta.overlays()) {
-            if (overlay.test(version)) {
-                overlayDirectories.add(overlay.directory());
+        List<OverlayCombination.Segment> segments = new ArrayList<>();
+        // 完全小于1.21.11或完全大于1.21.11
+        if (Config.packMaxVersion().isBelow(MinecraftVersion.V1_21_11) || Config.packMinVersion().isAtOrAbove(MinecraftVersion.V1_21_11)) {
+            OverlayCombination combination = new OverlayCombination(packMeta.overlays(), Config.packMinVersion().packFormat().major(), Config.packMaxVersion().packFormat().major());
+            while (combination.hasNext()) {
+                OverlayCombination.Segment segment = combination.nextSegment();
+                if (segment != null) {
+                    segments.add(segment);
+                } else {
+                    break;
+                }
             }
         }
-        overlayDirectories = overlayDirectories.stream().distinct().toList();
-
-        List<Path> rootPathList = new ArrayList<>();
-        rootPathList.add(path);
-        for (String directory : overlayDirectories) {
-            Path resolve = path.resolve(directory);
-            if (Files.isDirectory(resolve)) {
-                rootPathList.add(resolve);
+        // 混合版本
+        else {
+            OverlayCombination combinationLegacy = new OverlayCombination(packMeta.overlays(), Config.packMinVersion().packFormat().major(), MinecraftVersion.V1_21_11.packFormat().major() - 1);
+            while (combinationLegacy.hasNext()) {
+                OverlayCombination.Segment segment = combinationLegacy.nextSegment();
+                if (segment != null) {
+                    segments.add(segment);
+                } else {
+                    break;
+                }
+            }
+            OverlayCombination combinationModern = new OverlayCombination(packMeta.overlays(), MinecraftVersion.V1_21_11.packFormat().major(), Config.packMaxVersion().packFormat().major());
+            while (combinationModern.hasNext()) {
+                OverlayCombination.Segment segment = combinationModern.nextSegment();
+                if (segment != null) {
+                    segments.add(segment);
+                } else {
+                    break;
+                }
             }
         }
 
-        // 收集全部overlay，按照正确的顺序加载
-        Path[] rootPaths = rootPathList.toArray(new Path[0]);
+        AtlasFixer itemFixer = new AtlasFixer();
+        AtlasFixer blockFixer = new AtlasFixer();
 
+        boolean hasNonOverlaySupport = false;
+        if (!segments.isEmpty()) {
+            // 第一个segment一定是最小的
+            hasNonOverlaySupport = segments.getFirst().min() <= MinecraftVersion.V1_20_1.packFormat().major();
+        }
+
+        for (int i = 0, size = segments.size(); i < size; i++) {
+            OverlayCombination.Segment segment = segments.get(i);
+            List<Path> rootPathList = new ArrayList<>();
+            rootPathList.add(path);
+            List<Overlay> overlayInOrder = new ArrayList<>(segment.overlays().size());
+            for (Overlay overlay : packMeta.overlays()) {
+                if (segment.overlays().contains(overlay)) {
+                    Path resolve = path.resolve(overlay.directory());
+                    if (Files.isDirectory(resolve)) {
+                        overlayInOrder.add(overlay);
+                        rootPathList.add(resolve);
+                    }
+                }
+            }
+            this.plugin.logger().info(TranslationManager.instance().translateLog("info.resource_pack.validate.start",
+                    String.valueOf(i + 1), String.valueOf(size), String.valueOf(segment.min()), String.valueOf(segment.max()), overlayInOrder.stream().map(Overlay::directory).toList().toString()));
+            ValidationResult result = validateOverlayedResourcePack(rootPathList.toArray(new Path[0]), segment.max() >= MinecraftVersion.V1_21_11.packFormat().major());
+            if (Config.fixTextureAtlas()) {
+                // 有修复物品
+                if (result.fixedItemAtlas != null) {
+                    itemFixer.addEntry(segment.min(), segment.max(), result.fixedItemAtlas);
+                }
+                // 有修复方块
+                if (result.fixedBlockAtlas != null) {
+                    blockFixer.addEntry(segment.min(), segment.max(), result.fixedBlockAtlas);
+                } else if (hasNonOverlaySupport) {
+                    // 如果有低版本的支持，那么要通过overlay复原atlas
+                    blockFixer.addEntry(segment.min(), segment.max(), Objects.requireNonNullElseGet(result.originalBlockAtlas, JsonObject::new));
+                }
+            }
+        }
+
+        // 尝试修复atlas
+        if (Config.fixTextureAtlas()) {
+            Map<String, JsonObject> atlasToAdd = new LinkedHashMap<>();
+            // 物品
+            for (AtlasFixer.Entry entry : itemFixer.entries()) {
+                int min = entry.min();
+                int max = entry.max();
+                MinecraftVersion minV = MinecraftVersion.byMajorPackFormat(min).getFirst();
+                MinecraftVersion maxV = MinecraftVersion.byMajorPackFormat(max).getLast();
+                String directoryName = Config.createOverlayFolderName(minV.version().replace("\\.", "_") + "-" + maxV.version().replace("\\.", "_"));
+                Path atlasPath = path.resolve(directoryName)
+                        .resolve("assets")
+                        .resolve("minecraft")
+                        .resolve("atlases")
+                        .resolve("items.json");
+                try {
+                    Files.createDirectories(atlasPath.getParent());
+                    GsonHelper.writeJsonFile(entry.atlas(), atlasPath);
+                    if (!atlasToAdd.containsKey(directoryName)) {
+                        Overlay overlay = new Overlay(new PackVersion(min), new PackVersion(max), directoryName);
+                        atlasToAdd.put(directoryName, overlay.getAsOverlayEntry());
+                    }
+                } catch (IOException e) {
+                    this.plugin.logger().warn("Failed to write atlas " + atlasPath.toAbsolutePath(), e);
+                }
+            }
+            // 方块
+            for (AtlasFixer.Entry entry : itemFixer.entries()) {
+                int min = entry.min();
+                int max = entry.max();
+                MinecraftVersion minV = MinecraftVersion.byMajorPackFormat(min).getFirst();
+                MinecraftVersion maxV = MinecraftVersion.byMajorPackFormat(max).getLast();
+                String directoryName = Config.createOverlayFolderName(minV.version().replace("\\.", "_") + "-" + maxV.version().replace("\\.", "_"));
+                // 这个版本不认可overlay，得把atlas直接写进主包内
+                if (min <= MinecraftVersion.V1_20_1.packFormat().major()) {
+                    Path atlasPath = path.resolve("assets")
+                            .resolve("minecraft")
+                            .resolve("atlases")
+                            .resolve("blocks.json");
+                    try {
+                        Files.createDirectories(atlasPath.getParent());
+                        GsonHelper.writeJsonFile(entry.atlas(), atlasPath);
+                    } catch (IOException e) {
+                        this.plugin.logger().warn("Failed to write atlas " + atlasPath.toAbsolutePath(), e);
+                    }
+                } else {
+                    Path atlasPath = path.resolve(directoryName)
+                            .resolve("assets")
+                            .resolve("minecraft")
+                            .resolve("atlases")
+                            .resolve("blocks.json");
+                    try {
+                        Files.createDirectories(atlasPath.getParent());
+                        GsonHelper.writeJsonFile(entry.atlas(), atlasPath);
+                        if (!atlasToAdd.containsKey(directoryName)) {
+                            Overlay overlay = new Overlay(new PackVersion(min), new PackVersion(max), directoryName);
+                            atlasToAdd.put(directoryName, overlay.getAsOverlayEntry());
+                        }
+                    } catch (IOException e) {
+                        this.plugin.logger().warn("Failed to write atlas " + atlasPath.toAbsolutePath(), e);
+                    }
+                }
+            }
+        }
+    }
+
+    @SuppressWarnings("DuplicatedCode")
+    private ValidationResult validateOverlayedResourcePack(Path[] rootPaths, boolean above1_21_11) {
         Multimap<Key, Key> glyphToFonts = HashMultimap.create(128, 32); // 图片到字体的映射
         Multimap<Key, Key> modelToItemDefinitions = HashMultimap.create(128, 4); // 模型到物品的映射
         Multimap<Key, String> modelToBlockStates = HashMultimap.create(128, 32); // 模型到方块的映射
@@ -1216,9 +1345,6 @@ public abstract class AbstractPackManager implements PackManager {
         Multimap<Key, Key> textureToEquipments = HashMultimap.create(128, 8); // 纹理到盔甲的映射
         Multimap<Key, Key> oggToSoundEvents = HashMultimap.create(128, 4); // 音频到声音的映射
 
-        Map<Path, JsonObject> blockAtlasJsons = new HashMap<>();
-        Map<Path, JsonObject> itemAtlasJsons = new HashMap<>();
-
         JsonObject lastBlocksAtlas = null;
         JsonObject lastItemAtlas = null;
 
@@ -1231,39 +1357,27 @@ public abstract class AbstractPackManager implements PackManager {
                     .resolve("blocks.json");
             if (Files.exists(blockAtlasFile)) {
                 try {
-                    JsonObject atlasJsonObject = GsonHelper.readJsonFile(blockAtlasFile).getAsJsonObject();
-                    blockAtlasJsons.put(blockAtlasFile, atlasJsonObject);
-                    lastBlocksAtlas = atlasJsonObject;
+                    lastBlocksAtlas = GsonHelper.readJsonFile(blockAtlasFile).getAsJsonObject();
                 } catch (IOException | JsonParseException e) {
                     TranslationManager.instance().log("warning.config.resource_pack.generation.malformatted_json", blockAtlasFile.toAbsolutePath().toString());
                 }
             }
-            Path itemAtlasFile = rootPath
-                    .resolve("assets")
-                    .resolve("minecraft")
-                    .resolve("atlases")
-                    .resolve("items.json");
-            if (Files.exists(itemAtlasFile)) {
-                try {
-                    JsonObject atlasJsonObject = GsonHelper.readJsonFile(itemAtlasFile).getAsJsonObject();
-                    itemAtlasJsons.put(itemAtlasFile, atlasJsonObject);
-                    lastItemAtlas = atlasJsonObject;
-                } catch (IOException | JsonParseException e) {
-                    TranslationManager.instance().log("warning.config.resource_pack.generation.malformatted_json", itemAtlasFile.toAbsolutePath().toString());
+            if (above1_21_11) {
+                Path itemAtlasFile = rootPath
+                        .resolve("assets")
+                        .resolve("minecraft")
+                        .resolve("atlases")
+                        .resolve("items.json");
+                if (Files.exists(itemAtlasFile)) {
+                    try {
+                        lastItemAtlas = GsonHelper.readJsonFile(itemAtlasFile).getAsJsonObject();
+                    } catch (IOException | JsonParseException e) {
+                        TranslationManager.instance().log("warning.config.resource_pack.generation.malformatted_json", itemAtlasFile.toAbsolutePath().toString());
+                    }
                 }
             }
         }
 
-        // 添加必要的基础atlas路径，方便后续修复
-        Path defaultBlockAtlas = path.resolve("assets").resolve("minecraft").resolve("atlases").resolve("blocks.json");
-        if (!blockAtlasJsons.containsKey(defaultBlockAtlas)) {
-            blockAtlasJsons.put(defaultBlockAtlas, new JsonObject());
-        }
-        Path defaultItemAtlas = path.resolve("assets").resolve("minecraft").resolve("atlases").resolve("items.json");
-        if (!itemAtlasJsons.containsKey(defaultItemAtlas)) {
-            itemAtlasJsons.put(defaultItemAtlas, new JsonObject());
-        }
-
         /*
 
 
@@ -1274,7 +1388,7 @@ public abstract class AbstractPackManager implements PackManager {
          */
         Atlas blockAtlas;
         Atlas itemAtlas;
-        if (version.isAtOrAbove(MinecraftVersions.V1_21_11)) {
+        if (above1_21_11) {
             blockAtlas = new Atlas(ListUtils.newNonNullList(lastBlocksAtlas, this.vanillaBlockAtlas));
             itemAtlas = new Atlas(ListUtils.newNonNullList(lastItemAtlas, this.vanillaItemAtlas));
         } else {
@@ -1292,7 +1406,7 @@ public abstract class AbstractPackManager implements PackManager {
                 namespaces = FileUtils.collectNamespaces(assetsPath);
             } catch (IOException e) {
                 this.plugin.logger().warn("Failed to collect namespaces for " + assetsPath.toAbsolutePath(), e);
-                return;
+                continue;
             }
 
             for (Path namespacePath : namespaces) {
@@ -1697,59 +1811,71 @@ public abstract class AbstractPackManager implements PackManager {
 
             // 尝试修复
             if (Config.fixTextureAtlas()) {
-                // 只用了方块图集，那么修复的东西丢方块图集
-                if (blockAtlasInUse) {
+                if (above1_21_11) {
+                    // 只用了方块图集，那么修复的东西丢方块图集
+                    if (blockAtlasInUse) {
+                        for (Key key : tempTextureToFix) {
+                            blockAtlasesToFix.put(key, entry.getKey());
+                        }
+                    }
+                    // 只用了物品图集，那么修复的东西丢物品图集
+                    if (itemAtlasInUse) {
+                        for (Key key : tempTextureToFix) {
+                            itemAtlasesToFix.put(key, entry.getKey());
+                        }
+                    }
+                    // 如果都没有，先暂定
+                    if (!itemAtlasInUse && !blockAtlasInUse) {
+                        for (Key key : tempTextureToFix) {
+                            anyAtlasesToFix.put(key, entry.getKey());
+                        }
+                    }
+                } else {
+                    // 对于较低的版本，全部塞blocks里
                     for (Key key : tempTextureToFix) {
                         blockAtlasesToFix.put(key, entry.getKey());
                     }
                 }
-                // 只用了物品图集，那么修复的东西丢物品图集
-                if (itemAtlasInUse) {
-                    for (Key key : tempTextureToFix) {
-                        itemAtlasesToFix.put(key, entry.getKey());
-                    }
-                }
-                // 如果都没有，先暂定
-                if (!itemAtlasInUse && !blockAtlasInUse) {
-                    for (Key key : tempTextureToFix) {
-                        anyAtlasesToFix.put(key, entry.getKey());
-                    }
-                }
             }
         }
 
-        if (Config.fixTextureAtlas() && !Config.enableObfuscation()) {
-            // 获取两个 Multimap 的所有 key
-            // 找出相同的 key
-            Set<Key> commonKeys = new LinkedHashSet<>(blockAtlasesToFix.keySet());
-            commonKeys.retainAll(itemAtlasesToFix.keySet());
+        ValidationResult result = null;
 
-            // 都是有问题的模型
-            if (!commonKeys.isEmpty()) {
-                for (Key sprite : commonKeys) {
-                    List<Key> duplicated = new ArrayList<>();
-                    duplicated.addAll(blockAtlasesToFix.get(sprite));
-                    duplicated.addAll(itemAtlasesToFix.get(sprite));
-                    TranslationManager.instance().log("warning.config.resource_pack.generation.duplicated_sprite", duplicated.toString(), sprite.asString(), "minecraft:textures/atlas/blocks.png", "minecraft:textures/atlas/items.png");
-                    for (Key duplicatedModel : duplicated) {
-                        // model已经塌房了，就不进入后续遍历了
-                        blockModels.remove(duplicatedModel);
-                        itemModels.remove(duplicatedModel);
+        if (Config.fixTextureAtlas() && !Config.enableObfuscation()) {
+
+            if (above1_21_11) {
+                // 获取两个 Multimap 的所有 key
+                // 找出相同的 key
+                Set<Key> commonKeys = new LinkedHashSet<>(blockAtlasesToFix.keySet());
+                commonKeys.retainAll(itemAtlasesToFix.keySet());
+
+                // 都是有问题的模型
+                if (!commonKeys.isEmpty()) {
+                    for (Key sprite : commonKeys) {
+                        List<Key> duplicated = new ArrayList<>();
+                        duplicated.addAll(blockAtlasesToFix.get(sprite));
+                        duplicated.addAll(itemAtlasesToFix.get(sprite));
+                        TranslationManager.instance().log("warning.config.resource_pack.generation.duplicated_sprite", duplicated.toString(), sprite.asString(), "minecraft:textures/atlas/blocks.png", "minecraft:textures/atlas/items.png");
+                        for (Key duplicatedModel : duplicated) {
+                            // model已经塌房了，就不进入后续遍历了
+                            blockModels.remove(duplicatedModel);
+                            itemModels.remove(duplicatedModel);
+                        }
                     }
                 }
-            }
 
-            // 将任意atlas的优先分配到items上，非必要不要到blocks上
-            for (Map.Entry<Key, Collection<Key>> entry : anyAtlasesToFix.asMap().entrySet()) {
-                if (blockAtlasesToFix.containsKey(entry.getKey())) {
-                    blockAtlasesToFix.putAll(entry.getKey(), entry.getValue());
-                } else {
-                    itemAtlasesToFix.putAll(entry.getKey(), entry.getValue());
+                // 将任意atlas的优先分配到items上，非必要不要到blocks上
+                for (Map.Entry<Key, Collection<Key>> entry : anyAtlasesToFix.asMap().entrySet()) {
+                    if (blockAtlasesToFix.containsKey(entry.getKey())) {
+                        blockAtlasesToFix.putAll(entry.getKey(), entry.getValue());
+                    } else {
+                        itemAtlasesToFix.putAll(entry.getKey(), entry.getValue());
+                    }
                 }
-            }
 
-            // 清空任意atlas分配，因为已经重分配了
-            anyAtlasesToFix.clear();
+                // 清空任意atlas分配，因为已经重分配了
+                anyAtlasesToFix.clear();
+            }
 
            /*
 
@@ -1757,13 +1883,7 @@ public abstract class AbstractPackManager implements PackManager {
             后续我们先对剩余的正常模型进行贴图路径验证（此阶段不验证那些存在atlas问题的模型，理论已被全部移除）
 
             */
-
-            // 如果最低支持版本太低了，那么全部塞blocks.json里
-            if (!Config.packMinVersion().isAtOrAbove(MinecraftVersions.V1_21_11)) {
-                blockAtlasesToFix.putAll(itemAtlasesToFix);
-                itemAtlasesToFix.clear();
-            }
-
+            JsonObject fixedItemAtlas = null;
             if (!itemAtlasesToFix.isEmpty() && itemAtlas != null) {
                 List<JsonObject> sourcesToAdd = new ArrayList<>(itemAtlasesToFix.size());
                 for (Key itemTexture : itemAtlasesToFix.keySet()) {
@@ -1773,25 +1893,18 @@ public abstract class AbstractPackManager implements PackManager {
                     source.addProperty("resource", itemTexture.asString());
                     sourcesToAdd.add(source);
                 }
-                for (Map.Entry<Path, JsonObject> atlas : itemAtlasJsons.entrySet()) {
-                    JsonObject right = atlas.getValue();
-                    JsonArray sources = right.getAsJsonArray("sources");
-                    if (sources == null) {
-                        sources = new JsonArray();
-                        right.add("sources", sources);
-                    }
-                    for (JsonObject source : sourcesToAdd) {
-                        sources.add(source);
-                    }
-                    try {
-                        Files.createDirectories(atlas.getKey().getParent());
-                        GsonHelper.writeJsonFile(right, atlas.getKey());
-                    } catch (IOException e) {
-                        this.plugin.logger().warn("Failed to write atlas to json file", e);
-                    }
+                fixedItemAtlas = lastItemAtlas == null ? new JsonObject() : lastItemAtlas;
+                JsonArray sources = fixedItemAtlas.getAsJsonArray("sources");
+                if (sources == null) {
+                    sources = new JsonArray();
+                    fixedItemAtlas.add("sources", sources);
+                }
+                for (JsonObject source : sourcesToAdd) {
+                    sources.add(source);
                 }
             }
 
+            JsonObject fixedBlockAtlas = null;
             if (!blockAtlasesToFix.isEmpty()) {
                 List<JsonObject> sourcesToAdd = new ArrayList<>(blockAtlasesToFix.size());
                 for (Key blockTexture : blockAtlasesToFix.keySet()) {
@@ -1801,23 +1914,20 @@ public abstract class AbstractPackManager implements PackManager {
                     source.addProperty("resource", blockTexture.asString());
                     sourcesToAdd.add(source);
                 }
-                for (Map.Entry<Path, JsonObject> atlas : blockAtlasJsons.entrySet()) {
-                    JsonObject right = atlas.getValue();
-                    JsonArray sources = right.getAsJsonArray("sources");
-                    if (sources == null) {
-                        sources = new JsonArray();
-                        right.add("sources", sources);
-                    }
-                    for (JsonObject source : sourcesToAdd) {
-                        sources.add(source);
-                    }
-                    try {
-                        Files.createDirectories(atlas.getKey().getParent());
-                        GsonHelper.writeJsonFile(right, atlas.getKey());
-                    } catch (IOException e) {
-                        this.plugin.logger().warn("Failed to write atlas to json file", e);
-                    }
+                fixedBlockAtlas = lastBlocksAtlas == null ? new JsonObject() : lastBlocksAtlas;
+                JsonArray sources = fixedBlockAtlas.getAsJsonArray("sources");
+                if (sources == null) {
+                    sources = new JsonArray();
+                    fixedBlockAtlas.add("sources", sources);
                 }
+                for (JsonObject source : sourcesToAdd) {
+                    sources.add(source);
+                }
+            }
+
+            // 至少有一个修复
+            if (fixedBlockAtlas != null || fixedItemAtlas != null) {
+                result = new ValidationResult(fixedItemAtlas, lastItemAtlas, fixedBlockAtlas, lastBlocksAtlas);
             }
         }
 
@@ -1861,12 +1971,23 @@ public abstract class AbstractPackManager implements PackManager {
                             break outer;
                         }
                     }
-                    TranslationManager.instance().log("warning.config.resource_pack.generation.missing_model_texture", entry.getValue().stream().distinct().toList().toString(), texturePath);
+                    TranslationManager.instance().log("warning.config.resource_pack.generation.missing_model_texture", entry.getValue().toString(), texturePath);
                 }
             }
         }
 
+        if (result == null) {
+            result = new ValidationResult(null, lastItemAtlas, null, lastBlocksAtlas);
+        }
+
         // todo 验证 unstitch 和 paletted permutations
+        return result;
+    }
+
+    protected record ValidationResult(JsonObject fixedItemAtlas,
+                                   JsonObject originalItemAtlas,
+                                   JsonObject fixedBlockAtlas,
+                                   JsonObject originalBlockAtlas) {
     }
 
     // 经过这一步拿到的模型为包含全部父贴图的模型
@@ -1997,7 +2118,7 @@ public abstract class AbstractPackManager implements PackManager {
 
     private void generateParticle(Path generatedPackPath) {
         if (!Config.removeTintedLeavesParticle()) return;
-        if (Config.packMaxVersion().isBelow(MinecraftVersions.V1_21_5)) return;
+        if (Config.packMaxVersion().isBelow(MinecraftVersion.V1_21_5)) return;
         JsonObject particleJson = new JsonObject();
         JsonArray textures = new JsonArray();
         textures.add("empty");
@@ -2033,8 +2154,8 @@ public abstract class AbstractPackManager implements PackManager {
         List<Tuple<Key, Boolean, Boolean>> collectedTrims = new ArrayList<>();
 
         // 为trim类型提供的两个兼容性值
-        boolean needLegacyCompatibility = Config.packMinVersion().isBelow(MinecraftVersions.V1_21_2);
-        boolean needModernCompatibility = Config.packMaxVersion().isAtOrAbove(MinecraftVersions.V1_21_2);
+        boolean needLegacyCompatibility = Config.packMinVersion().isBelow(MinecraftVersion.V1_21_2);
+        boolean needModernCompatibility = Config.packMaxVersion().isAtOrAbove(MinecraftVersion.V1_21_2);
 
         for (Equipment equipment : this.plugin.itemManager().equipments().values()) {
             if (equipment instanceof ComponentBasedEquipment componentBasedEquipment) {
@@ -2214,7 +2335,7 @@ public abstract class AbstractPackManager implements PackManager {
             return;
         }
 
-        if (Config.packMaxVersion().isAtOrAbove(MinecraftVersions.V1_21_4)) {
+        if (Config.packMaxVersion().isAtOrAbove(MinecraftVersion.V1_21_4)) {
             Path equipmentPath = generatedPackPath
                     .resolve("assets")
                     .resolve(assetId.namespace())
@@ -2247,7 +2368,7 @@ public abstract class AbstractPackManager implements PackManager {
                 this.plugin.logger().severe("Error writing equipment file", e);
             }
         }
-        if (Config.packMaxVersion().isAtOrAbove(MinecraftVersions.V1_21_2) && Config.packMinVersion().isBelow(MinecraftVersions.V1_21_4)) {
+        if (Config.packMaxVersion().isAtOrAbove(MinecraftVersion.V1_21_2) && Config.packMinVersion().isBelow(MinecraftVersion.V1_21_4)) {
             Path equipmentPath = generatedPackPath
                     .resolve("assets")
                     .resolve(assetId.namespace())
@@ -2303,7 +2424,7 @@ public abstract class AbstractPackManager implements PackManager {
                 return null;
             }
             boolean shouldPreserve = false;
-            if (Config.packMinVersion().isBelow(MinecraftVersions.V1_21_2)) {
+            if (Config.packMinVersion().isBelow(MinecraftVersion.V1_21_2)) {
                 Path legacyTarget = generatedPackPath
                         .resolve("assets")
                         .resolve(assetId.namespace())
@@ -2323,7 +2444,7 @@ public abstract class AbstractPackManager implements PackManager {
                     shouldPreserve = true;
                 }
             }
-            if (Config.packMaxVersion().isAtOrAbove(MinecraftVersions.V1_21_2)) {
+            if (Config.packMaxVersion().isAtOrAbove(MinecraftVersion.V1_21_2)) {
                 Path modernTarget = generatedPackPath
                         .resolve("assets")
                         .resolve(assetId.namespace())
@@ -2362,7 +2483,7 @@ public abstract class AbstractPackManager implements PackManager {
                 return null;
             }
             boolean shouldPreserve = false;
-            if (Config.packMinVersion().isBelow(MinecraftVersions.V1_21_2)) {
+            if (Config.packMinVersion().isBelow(MinecraftVersion.V1_21_2)) {
                 Path legacyTarget = generatedPackPath
                         .resolve("assets")
                         .resolve(assetId.namespace())
@@ -2382,7 +2503,7 @@ public abstract class AbstractPackManager implements PackManager {
                     shouldPreserve = true;
                 }
             }
-            if (Config.packMaxVersion().isAtOrAbove(MinecraftVersions.V1_21_2)) {
+            if (Config.packMaxVersion().isAtOrAbove(MinecraftVersion.V1_21_2)) {
                 Path modernTarget = generatedPackPath
                         .resolve("assets")
                         .resolve(assetId.namespace())
@@ -2665,8 +2786,8 @@ public abstract class AbstractPackManager implements PackManager {
     }
 
     private void generateModernItemModels1_21_2(Path generatedPackPath) {
-        if (Config.packMaxVersion().isBelow(MinecraftVersions.V1_21_2)) return;
-        if (Config.packMinVersion().isAtOrAbove(MinecraftVersions.V1_21_4)) return;
+        if (Config.packMaxVersion().isBelow(MinecraftVersion.V1_21_2)) return;
+        if (Config.packMinVersion().isAtOrAbove(MinecraftVersion.V1_21_4)) return;
 
         // 此段代码生成1.21.2专用的item model文件，情况非常复杂！
         for (Map.Entry<Key, TreeSet<LegacyOverridesModel>> entry : this.plugin.itemManager().modernItemModels1_21_2().entrySet()) {
@@ -2748,7 +2869,7 @@ public abstract class AbstractPackManager implements PackManager {
     }
 
     private void generateModernItemModels1_21_4(Path generatedPackPath, Consumer<Revision> callback) {
-        if (Config.packMaxVersion().isBelow(MinecraftVersions.V1_21_4)) return;
+        if (Config.packMaxVersion().isBelow(MinecraftVersion.V1_21_4)) return;
         for (Map.Entry<Key, ModernItemModel> entry : this.plugin.itemManager().modernItemModels1_21_4().entrySet()) {
             Key key = entry.getKey();
             Path itemPath = generatedPackPath
@@ -2802,7 +2923,7 @@ public abstract class AbstractPackManager implements PackManager {
     }
 
     private void generateModernItemOverrides(Path generatedPackPath, Consumer<Revision> callback) {
-        if (Config.packMaxVersion().isBelow(MinecraftVersions.V1_21_4)) return;
+        if (Config.packMaxVersion().isBelow(MinecraftVersion.V1_21_4)) return;
         for (Map.Entry<Key, TreeMap<Integer, ModernItemModel>> entry : this.plugin.itemManager().modernItemOverrides().entrySet()) {
             Key vanillaItemModel = entry.getKey();
             Path overridedItemPath = generatedPackPath
@@ -2893,7 +3014,7 @@ public abstract class AbstractPackManager implements PackManager {
     }
 
     private void generateLegacyItemOverrides(Path generatedPackPath) {
-        if (Config.packMinVersion().isAtOrAbove(MinecraftVersions.V1_21_4)) return;
+        if (Config.packMinVersion().isAtOrAbove(MinecraftVersion.V1_21_4)) return;
         for (Map.Entry<Key, TreeSet<LegacyOverridesModel>> entry : this.plugin.itemManager().legacyItemOverrides().entrySet()) {
             Key vanillaLegacyModel = entry.getKey();
             Path overridedItemPath = generatedPackPath
diff --git a/core/src/main/java/net/momirealms/craftengine/core/pack/AtlasFixer.java b/core/src/main/java/net/momirealms/craftengine/core/pack/AtlasFixer.java
new file mode 100644
index 000000000..6a60e66ef
--- /dev/null
+++ b/core/src/main/java/net/momirealms/craftengine/core/pack/AtlasFixer.java
@@ -0,0 +1,66 @@
+package net.momirealms.craftengine.core.pack;
+
+import com.google.gson.JsonObject;
+
+import java.util.ArrayList;
+import java.util.List;
+
+class AtlasFixer {
+    private final List<Entry> entries;
+
+    public AtlasFixer() {
+        this.entries = new ArrayList<>();
+    }
+
+    // 理论是从小到大加的
+    public void addEntry(int min, int max, JsonObject atlas) {
+        if (this.entries.isEmpty()) {
+            this.entries.add(new Entry(min, max, atlas));
+        } else {
+            Entry last = this.entries.getLast();
+            // 相同则扩大区间
+            if (last.atlas.equals(atlas)) {
+                last.setMax(max);
+            }
+            // 不同则另加元素
+            else {
+                this.entries.add(new Entry(min, max, atlas));
+            }
+        }
+    }
+
+    public List<Entry> entries() {
+        return entries;
+    }
+
+    protected static class Entry {
+        private int min, max;
+        private final JsonObject atlas;
+
+        public Entry(int min, int max, JsonObject atlas) {
+            this.min = min;
+            this.max = max;
+            this.atlas = atlas;
+        }
+
+        public int min() {
+            return min;
+        }
+
+        public int max() {
+            return max;
+        }
+
+        public JsonObject atlas() {
+            return atlas;
+        }
+
+        public void setMin(int min) {
+            this.min = min;
+        }
+
+        public void setMax(int max) {
+            this.max = max;
+        }
+    }
+}
diff --git a/core/src/main/java/net/momirealms/craftengine/core/pack/mcmeta/Overlay.java b/core/src/main/java/net/momirealms/craftengine/core/pack/mcmeta/Overlay.java
index 6b4a9d470..72440de6b 100644
--- a/core/src/main/java/net/momirealms/craftengine/core/pack/mcmeta/Overlay.java
+++ b/core/src/main/java/net/momirealms/craftengine/core/pack/mcmeta/Overlay.java
@@ -32,6 +32,33 @@ public class Overlay {
         this.maxVersion = supportedVersions.right();
     }
 
+    @Override
+    public String toString() {
+        return "Overlay{" +
+                "minVersion=" + minVersion +
+                ", maxVersion=" + maxVersion +
+                ", directory='" + directory + '\'' +
+                '}';
+    }
+
+    public JsonObject getAsOverlayEntry() {
+        JsonObject entry = new JsonObject();
+        entry.addProperty("directory", this.directory);
+        JsonArray minFormat = new JsonArray();
+        minFormat.add(new JsonPrimitive(this.minVersion.major()));
+        minFormat.add(new JsonPrimitive(this.minVersion.minor()));
+        entry.add("min_format", minFormat);
+        JsonArray maxFormat = new JsonArray();
+        maxFormat.add(new JsonPrimitive(this.maxVersion.major()));
+        maxFormat.add(new JsonPrimitive(this.maxVersion.minor()));
+        entry.add("max_format", maxFormat);
+        JsonArray formats = new JsonArray();
+        formats.add(new JsonPrimitive(this.minVersion.major()));
+        formats.add(new JsonPrimitive(this.maxVersion.major()));
+        entry.add("formats", formats);
+        return entry;
+    }
+
     public PackVersion minVersion() {
         return minVersion;
     }
diff --git a/core/src/main/java/net/momirealms/craftengine/core/pack/mcmeta/PackVersion.java b/core/src/main/java/net/momirealms/craftengine/core/pack/mcmeta/PackVersion.java
index 609823392..076b6e5cf 100644
--- a/core/src/main/java/net/momirealms/craftengine/core/pack/mcmeta/PackVersion.java
+++ b/core/src/main/java/net/momirealms/craftengine/core/pack/mcmeta/PackVersion.java
@@ -8,6 +8,10 @@ public record PackVersion(int major, int minor) implements Comparable<PackVersio
     public static final PackVersion MIN_PACK_VERSION = new PackVersion(15, 0); // 1.20
     public static final PackVersion MAX_PACK_VERSION = new PackVersion(1000, 0); // future
 
+    public PackVersion(int major) {
+        this(major, 0);
+    }
+
     @Override
     public int compareTo(@NotNull PackVersion o) {
         // 首先比较 major 版本
diff --git a/core/src/main/java/net/momirealms/craftengine/core/pack/mcmeta/overlay/OverlayCombination.java b/core/src/main/java/net/momirealms/craftengine/core/pack/mcmeta/overlay/OverlayCombination.java
new file mode 100644
index 000000000..9a75aa416
--- /dev/null
+++ b/core/src/main/java/net/momirealms/craftengine/core/pack/mcmeta/overlay/OverlayCombination.java
@@ -0,0 +1,108 @@
+package net.momirealms.craftengine.core.pack.mcmeta.overlay;
+
+import net.momirealms.craftengine.core.pack.mcmeta.Overlay;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.*;
+
+public class OverlayCombination {
+    private final List<VersionBasedEvent> versionBasedEvents;
+    private final List<Overlay> currentOverlays;
+    private int cursor;
+    private int version;
+
+    public OverlayCombination(List<Overlay> overlays, int minVersion, int maxVersion) {
+        this.versionBasedEvents = new ArrayList<>();
+        this.currentOverlays = new ArrayList<>();
+        this.version = minVersion;
+        this.cursor = 0;
+
+        Map<Integer, List<Event>> eventsByVersion = new TreeMap<>();
+        eventsByVersion.computeIfAbsent(minVersion, k -> new ArrayList<>());
+        eventsByVersion.computeIfAbsent(maxVersion + 1, k -> new ArrayList<>());
+        for (Overlay overlay : overlays) {
+            if (overlay.minVersion().major() > maxVersion) {
+                continue;
+            }
+            if (overlay.maxVersion().major() < minVersion) {
+                continue;
+            }
+
+            // 取最小中的较大值
+            int join = Math.max(overlay.minVersion().major(), minVersion);
+            // 去最大中的较小值
+            int leave = Math.min(overlay.maxVersion().major(), maxVersion);
+            List<Event> joinEvents = eventsByVersion.computeIfAbsent(join, k -> new ArrayList<>());
+            joinEvents.add(new Event(overlay, Operation.JOIN));
+            List<Event> leaveEvents = eventsByVersion.computeIfAbsent(leave + 1, k -> new ArrayList<>());
+            leaveEvents.add(new Event(overlay, Operation.LEAVE));
+        }
+
+        for (Map.Entry<Integer, List<Event>> entry : eventsByVersion.entrySet()) {
+            this.versionBasedEvents.add(new VersionBasedEvent(entry.getKey(), entry.getValue()));
+        }
+    }
+
+    public boolean hasNext() {
+        return this.cursor < this.versionBasedEvents.size();
+    }
+
+    @Nullable
+    public OverlayCombination.Segment nextSegment() {
+        Segment next = next();
+        if (next == null) {
+            return null;
+        }
+        // 第一次100%有问题
+        if (next.min > next.max) {
+            return next();
+        }
+        return next;
+    }
+
+    @Nullable
+    private OverlayCombination.Segment next() {
+        // 已经没有事件里
+        if (this.cursor >= this.versionBasedEvents.size()) {
+            return null;
+        }
+        // 获取事件
+        VersionBasedEvent events = this.versionBasedEvents.get(this.cursor);
+        // 将上一个版本和上次记录的版本打为一个overlay返回
+        Segment segment = new Segment(this.version, events.version - 1, Set.copyOf(this.currentOverlays));
+        this.version = events.version;
+        // 变更当前成员
+        for (Event event : events.events) {
+            if (event.operation() == Operation.LEAVE) {
+                this.currentOverlays.remove(event.overlay);
+            } else if (event.operation() == Operation.JOIN) {
+                this.currentOverlays.add(event.overlay);
+            }
+        }
+        this.cursor++;
+        return segment;
+    }
+
+    public record Segment(int min, int max, Set<Overlay> overlays) {
+
+        @Override
+        public @NotNull String toString() {
+            return "OverlaySegment{" +
+                    "min=" + min +
+                    ", max=" + max +
+                    ", overlays=" + overlays +
+                    '}';
+        }
+    }
+
+    record Event(Overlay overlay, Operation operation) {
+    }
+
+    record VersionBasedEvent(int version, List<Event> events) {
+    }
+
+    enum Operation {
+        JOIN, LEAVE
+    }
+}
diff --git a/core/src/main/java/net/momirealms/craftengine/core/pack/model/ModernItemModel.java b/core/src/main/java/net/momirealms/craftengine/core/pack/model/ModernItemModel.java
index a094e4be2..3e1512dea 100644
--- a/core/src/main/java/net/momirealms/craftengine/core/pack/model/ModernItemModel.java
+++ b/core/src/main/java/net/momirealms/craftengine/core/pack/model/ModernItemModel.java
@@ -4,7 +4,6 @@ import com.google.gson.JsonObject;
 import net.momirealms.craftengine.core.pack.revision.Revision;
 import net.momirealms.craftengine.core.util.GsonHelper;
 import net.momirealms.craftengine.core.util.MinecraftVersion;
-import net.momirealms.craftengine.core.util.MinecraftVersions;
 
 import java.util.List;
 
@@ -33,13 +32,13 @@ public class ModernItemModel {
 
     public JsonObject toJson(MinecraftVersion version) {
         JsonObject json = new JsonObject();
-        if (this.oversizedInGui && version.isAtOrAbove(MinecraftVersions.V1_21_6)) {
+        if (this.oversizedInGui && version.isAtOrAbove(MinecraftVersion.V1_21_6)) {
             json.addProperty("oversized_in_gui", true);
         }
         if (!this.handAnimationOnSwap) {
             json.addProperty("hand_animation_on_swap", false);
         }
-        if (this.swapAnimationScale != 1.0f && version.isAtOrAbove(MinecraftVersions.V1_21_11)) {
+        if (this.swapAnimationScale != 1.0f && version.isAtOrAbove(MinecraftVersion.V1_21_11)) {
             json.addProperty("swap_animation_scale", this.swapAnimationScale);
         }
         json.add("model", this.itemModel.apply(version));
diff --git a/core/src/main/java/net/momirealms/craftengine/core/pack/model/select/DisplayContextSelectProperty.java b/core/src/main/java/net/momirealms/craftengine/core/pack/model/select/DisplayContextSelectProperty.java
index 49299c8f8..8b2e953a7 100644
--- a/core/src/main/java/net/momirealms/craftengine/core/pack/model/select/DisplayContextSelectProperty.java
+++ b/core/src/main/java/net/momirealms/craftengine/core/pack/model/select/DisplayContextSelectProperty.java
@@ -7,7 +7,6 @@ import net.momirealms.craftengine.core.pack.revision.Revision;
 import net.momirealms.craftengine.core.pack.revision.Revisions;
 import net.momirealms.craftengine.core.util.Key;
 import net.momirealms.craftengine.core.util.MinecraftVersion;
-import net.momirealms.craftengine.core.util.MinecraftVersions;
 import org.jetbrains.annotations.Nullable;
 
 import java.util.List;
@@ -38,7 +37,7 @@ public class DisplayContextSelectProperty implements SelectProperty {
 
     @Override
     public @Nullable JsonElement remap(JsonElement element, MinecraftVersion version) {
-        if (version.isBelow(MinecraftVersions.V1_21_9) && element instanceof JsonPrimitive primitive && primitive.isString()) {
+        if (version.isBelow(MinecraftVersion.V1_21_9) && element instanceof JsonPrimitive primitive && primitive.isString()) {
             if (primitive.getAsString().equals("on_shelf")) {
                 return null;
             }
diff --git a/core/src/main/java/net/momirealms/craftengine/core/pack/model/special/PlayerHeadSpecialModel.java b/core/src/main/java/net/momirealms/craftengine/core/pack/model/special/PlayerHeadSpecialModel.java
index a106a009a..a36998761 100644
--- a/core/src/main/java/net/momirealms/craftengine/core/pack/model/special/PlayerHeadSpecialModel.java
+++ b/core/src/main/java/net/momirealms/craftengine/core/pack/model/special/PlayerHeadSpecialModel.java
@@ -5,7 +5,6 @@ import net.momirealms.craftengine.core.pack.revision.Revision;
 import net.momirealms.craftengine.core.pack.revision.Revisions;
 import net.momirealms.craftengine.core.util.Key;
 import net.momirealms.craftengine.core.util.MinecraftVersion;
-import net.momirealms.craftengine.core.util.MinecraftVersions;
 
 import java.util.List;
 import java.util.Map;
@@ -31,7 +30,7 @@ public class PlayerHeadSpecialModel implements SpecialModel {
     @Override
     public JsonObject apply(MinecraftVersion version) {
         JsonObject json = new JsonObject();
-        if (version.isAtOrAbove(MinecraftVersions.V1_21_6)) {
+        if (version.isAtOrAbove(MinecraftVersion.V1_21_6)) {
             json.addProperty("type", type().toString());
         } else {
             json.addProperty("type", SpecialModels.HEAD.toString());
diff --git a/core/src/main/java/net/momirealms/craftengine/core/pack/revision/Revision.java b/core/src/main/java/net/momirealms/craftengine/core/pack/revision/Revision.java
index 949174f6f..adcc1e885 100644
--- a/core/src/main/java/net/momirealms/craftengine/core/pack/revision/Revision.java
+++ b/core/src/main/java/net/momirealms/craftengine/core/pack/revision/Revision.java
@@ -1,7 +1,6 @@
 package net.momirealms.craftengine.core.pack.revision;
 
 import net.momirealms.craftengine.core.util.MinecraftVersion;
-import net.momirealms.craftengine.core.util.MinecraftVersions;
 
 import java.util.Objects;
 
@@ -37,7 +36,7 @@ public interface Revision {
 
         @Override
         public MinecraftVersion maxVersion() {
-            return MinecraftVersions.FUTURE;
+            return MinecraftVersion.FUTURE;
         }
 
         @Override
@@ -61,7 +60,7 @@ public interface Revision {
         @Override
         public int maxPackVersion() {
             // todo 重构revision系统
-            return MinecraftVersions.FUTURE.packFormat().major();
+            return MinecraftVersion.FUTURE.packFormat().major();
         }
 
         @Override
diff --git a/core/src/main/java/net/momirealms/craftengine/core/pack/revision/Revisions.java b/core/src/main/java/net/momirealms/craftengine/core/pack/revision/Revisions.java
index d14f3090f..4c08ff8eb 100644
--- a/core/src/main/java/net/momirealms/craftengine/core/pack/revision/Revisions.java
+++ b/core/src/main/java/net/momirealms/craftengine/core/pack/revision/Revisions.java
@@ -1,11 +1,11 @@
 package net.momirealms.craftengine.core.pack.revision;
 
-import net.momirealms.craftengine.core.util.MinecraftVersions;
+import net.momirealms.craftengine.core.util.MinecraftVersion;
 
 public final class Revisions {
     private Revisions() {}
 
-    public static final Revision SINCE_1_21_6 = Revision.since(MinecraftVersions.V1_21_6);
-    public static final Revision SINCE_1_21_2 = Revision.since(MinecraftVersions.V1_21_2);
-    public static final Revision SINCE_1_21_9 = Revision.since(MinecraftVersions.V1_21_9);
+    public static final Revision SINCE_1_21_6 = Revision.since(MinecraftVersion.V1_21_6);
+    public static final Revision SINCE_1_21_2 = Revision.since(MinecraftVersion.V1_21_2);
+    public static final Revision SINCE_1_21_9 = Revision.since(MinecraftVersion.V1_21_9);
 }
diff --git a/core/src/main/java/net/momirealms/craftengine/core/plugin/config/Config.java b/core/src/main/java/net/momirealms/craftengine/core/plugin/config/Config.java
index 298a48d7d..3182d6ecf 100644
--- a/core/src/main/java/net/momirealms/craftengine/core/plugin/config/Config.java
+++ b/core/src/main/java/net/momirealms/craftengine/core/plugin/config/Config.java
@@ -611,12 +611,12 @@ public class Config {
 
     private static MinecraftVersion getVersion(String version) {
         if (version.equalsIgnoreCase("latest")) {
-            return new MinecraftVersion(PluginProperties.getValue("latest-version"));
+            return MinecraftVersion.byName(PluginProperties.getValue("latest-version"));
         }
         if (version.equalsIgnoreCase("server")) {
             return VersionHelper.MINECRAFT_VERSION;
         }
-        return MinecraftVersion.parse(version);
+        return MinecraftVersion.byName(version);
     }
 
     public static Locale forcedLocale() {
diff --git a/core/src/main/java/net/momirealms/craftengine/core/util/MinecraftVersion.java b/core/src/main/java/net/momirealms/craftengine/core/util/MinecraftVersion.java
index 34c00fa46..aa35ddc78 100644
--- a/core/src/main/java/net/momirealms/craftengine/core/util/MinecraftVersion.java
+++ b/core/src/main/java/net/momirealms/craftengine/core/util/MinecraftVersion.java
@@ -1,13 +1,25 @@
 package net.momirealms.craftengine.core.util;
 
+import com.google.common.collect.ArrayListMultimap;
+import com.google.common.collect.Multimap;
 import net.momirealms.craftengine.core.pack.mcmeta.PackVersion;
 
-import java.util.HashMap;
-import java.util.Map;
+import java.util.*;
+
+public class MinecraftVersion implements Comparable<MinecraftVersion> {
+    private static final Map<Integer, PackVersion> PACK_FORMATS = new HashMap<>();
 
-public final class MinecraftVersion implements Comparable<MinecraftVersion> {
-    public static final Map<Integer, PackVersion> PACK_FORMATS = new HashMap<>();
     static {
+        PACK_FORMATS.put(1_17_00, new PackVersion(7, 0));
+        PACK_FORMATS.put(1_17_01, new PackVersion(7, 0));
+        PACK_FORMATS.put(1_18_00, new PackVersion(8, 0));
+        PACK_FORMATS.put(1_18_01, new PackVersion(8, 0));
+        PACK_FORMATS.put(1_18_02, new PackVersion(8, 0));
+        PACK_FORMATS.put(1_19_00, new PackVersion(9, 0));
+        PACK_FORMATS.put(1_19_01, new PackVersion(9, 0));
+        PACK_FORMATS.put(1_19_02, new PackVersion(9, 0));
+        PACK_FORMATS.put(1_19_03, new PackVersion(12, 0));
+        PACK_FORMATS.put(1_19_04, new PackVersion(13, 0));
         PACK_FORMATS.put(1_20_00, new PackVersion(15, 0));
         PACK_FORMATS.put(1_20_01, new PackVersion(15, 0));
         PACK_FORMATS.put(1_20_02, new PackVersion(18, 0));
@@ -27,15 +39,62 @@ public final class MinecraftVersion implements Comparable<MinecraftVersion> {
         PACK_FORMATS.put(1_21_09, new PackVersion(69, 0));
         PACK_FORMATS.put(1_21_10, new PackVersion(69, 0));
         PACK_FORMATS.put(1_21_11, new PackVersion(75, 0));
-        PACK_FORMATS.put(99_99_99, new PackVersion(1000, 0));
+        PACK_FORMATS.put(1_26_01, new PackVersion(76, 0));
+        PACK_FORMATS.put(1_99_99, new PackVersion(1000, 0));
     }
 
+    private static final Map<String, MinecraftVersion> BY_NAME = new LinkedHashMap<>();
+    private static final Multimap<Integer, MinecraftVersion> BY_PACK_FORMAT = ArrayListMultimap.create();
+    public static final MinecraftVersion V1_17 = new MinecraftVersion("1.17");
+    public static final MinecraftVersion V1_17_1 = new MinecraftVersion("1.17.1");
+    public static final MinecraftVersion V1_18 = new MinecraftVersion("1.18");
+    public static final MinecraftVersion V1_18_1 = new MinecraftVersion("1.18.1");
+    public static final MinecraftVersion V1_18_2 = new MinecraftVersion("1.18.2");
+    public static final MinecraftVersion V1_19 = new MinecraftVersion("1.19");
+    public static final MinecraftVersion V1_19_1 = new MinecraftVersion("1.19.1");
+    public static final MinecraftVersion V1_19_2 = new MinecraftVersion("1.19.2");
+    public static final MinecraftVersion V1_19_3 = new MinecraftVersion("1.19.3");
+    public static final MinecraftVersion V1_19_4 = new MinecraftVersion("1.19.4");
+    public static final MinecraftVersion V1_20 = new MinecraftVersion("1.20");
+    public static final MinecraftVersion V1_20_1 = new MinecraftVersion("1.20.1");
+    public static final MinecraftVersion V1_20_2 = new MinecraftVersion("1.20.2");
+    public static final MinecraftVersion V1_20_3 = new MinecraftVersion("1.20.3");
+    public static final MinecraftVersion V1_20_4 = new MinecraftVersion("1.20.4");
+    public static final MinecraftVersion V1_20_5 = new MinecraftVersion("1.20.5");
+    public static final MinecraftVersion V1_20_6 = new MinecraftVersion("1.20.6");
+    public static final MinecraftVersion V1_21 = new MinecraftVersion("1.21");
+    public static final MinecraftVersion V1_21_1 = new MinecraftVersion("1.21.1");
+    public static final MinecraftVersion V1_21_2 = new MinecraftVersion("1.21.2");
+    public static final MinecraftVersion V1_21_3 = new MinecraftVersion("1.21.3");
+    public static final MinecraftVersion V1_21_4 = new MinecraftVersion("1.21.4");
+    public static final MinecraftVersion V1_21_5 = new MinecraftVersion("1.21.5");
+    public static final MinecraftVersion V1_21_6 = new MinecraftVersion("1.21.6");
+    public static final MinecraftVersion V1_21_7 = new MinecraftVersion("1.21.7");
+    public static final MinecraftVersion V1_21_8 = new MinecraftVersion("1.21.8");
+    public static final MinecraftVersion V1_21_9 = new MinecraftVersion("1.21.9");
+    public static final MinecraftVersion V1_21_10 = new MinecraftVersion("1.21.10");
+    public static final MinecraftVersion V1_21_11 = new MinecraftVersion("1.21.11");
+    public static final MinecraftVersion V26_1 = new MinecraftVersion("26.1");
+    public static final MinecraftVersion FUTURE = new MinecraftVersion("99.99");
+
     private final int version;
     private final String versionString;
     private final PackVersion packFormat;
 
-    public static MinecraftVersion parse(final String version) {
-        return new MinecraftVersion(version);
+    public static MinecraftVersion byName(final String version) {
+        MinecraftVersion mcV = BY_NAME.get(version);
+        if (mcV == null) {
+            throw new IllegalArgumentException("Unsupported version: " + version);
+        }
+        return mcV;
+    }
+
+    public static List<MinecraftVersion> byMajorPackFormat(final int packFormat) {
+        List<MinecraftVersion> minecraftVersions = (List<MinecraftVersion>) BY_PACK_FORMAT.get(packFormat);
+        if (minecraftVersions.isEmpty()) {
+            throw new IllegalArgumentException("Unsupported pack format: " + packFormat);
+        }
+        return minecraftVersions;
     }
 
     public String version() {
@@ -46,10 +105,12 @@ public final class MinecraftVersion implements Comparable<MinecraftVersion> {
         return packFormat;
     }
 
-    public MinecraftVersion(String version) {
+    private MinecraftVersion(String version) {
         this.version = VersionHelper.parseVersionToInteger(version);
         this.versionString = version;
-        this.packFormat = PACK_FORMATS.get(this.version);
+        this.packFormat = Objects.requireNonNull(PACK_FORMATS.get(this.version));
+        BY_NAME.put(this.versionString, this);
+        BY_PACK_FORMAT.put(this.packFormat.major(), this);
     }
 
     public boolean isAtOrAbove(MinecraftVersion other) {
@@ -60,7 +121,7 @@ public final class MinecraftVersion implements Comparable<MinecraftVersion> {
         return version <= other.version;
     }
 
-    public boolean isAt(MinecraftVersion other) {
+    public boolean is(MinecraftVersion other) {
         return version == other.version;
     }
 
@@ -80,7 +141,7 @@ public final class MinecraftVersion implements Comparable<MinecraftVersion> {
 
     @Override
     public int hashCode() {
-        return version;
+        return this.version;
     }
 
     @Override
diff --git a/core/src/main/java/net/momirealms/craftengine/core/util/MinecraftVersions.java b/core/src/main/java/net/momirealms/craftengine/core/util/MinecraftVersions.java
deleted file mode 100644
index 0c51a9af1..000000000
--- a/core/src/main/java/net/momirealms/craftengine/core/util/MinecraftVersions.java
+++ /dev/null
@@ -1,26 +0,0 @@
-package net.momirealms.craftengine.core.util;
-
-public final class MinecraftVersions {
-    private MinecraftVersions() {}
-
-    public static final MinecraftVersion V1_20 = new MinecraftVersion("1.20");
-    public static final MinecraftVersion V1_20_1 = new MinecraftVersion("1.20.1");
-    public static final MinecraftVersion V1_20_2 = new MinecraftVersion("1.20.2");
-    public static final MinecraftVersion V1_20_3 = new MinecraftVersion("1.20.3");
-    public static final MinecraftVersion V1_20_4 = new MinecraftVersion("1.20.4");
-    public static final MinecraftVersion V1_20_5 = new MinecraftVersion("1.20.5");
-    public static final MinecraftVersion V1_20_6 = new MinecraftVersion("1.20.6");
-    public static final MinecraftVersion V1_21 = new MinecraftVersion("1.21");
-    public static final MinecraftVersion V1_21_1 = new MinecraftVersion("1.21.1");
-    public static final MinecraftVersion V1_21_2 = new MinecraftVersion("1.21.2");
-    public static final MinecraftVersion V1_21_3 = new MinecraftVersion("1.21.3");
-    public static final MinecraftVersion V1_21_4 = new MinecraftVersion("1.21.4");
-    public static final MinecraftVersion V1_21_5 = new MinecraftVersion("1.21.5");
-    public static final MinecraftVersion V1_21_6 = new MinecraftVersion("1.21.6");
-    public static final MinecraftVersion V1_21_7 = new MinecraftVersion("1.21.7");
-    public static final MinecraftVersion V1_21_8 = new MinecraftVersion("1.21.8");
-    public static final MinecraftVersion V1_21_9 = new MinecraftVersion("1.21.9");
-    public static final MinecraftVersion V1_21_10 = new MinecraftVersion("1.21.10");
-    public static final MinecraftVersion V1_21_11 = new MinecraftVersion("1.21.11");
-    public static final MinecraftVersion FUTURE = new MinecraftVersion("1.99.99");
-}
diff --git a/core/src/main/java/net/momirealms/craftengine/core/util/VersionHelper.java b/core/src/main/java/net/momirealms/craftengine/core/util/VersionHelper.java
index 18c1d97da..c37a5eea2 100644
--- a/core/src/main/java/net/momirealms/craftengine/core/util/VersionHelper.java
+++ b/core/src/main/java/net/momirealms/craftengine/core/util/VersionHelper.java
@@ -38,6 +38,7 @@ public class VersionHelper {
     private static final boolean v1_21_9;
     private static final boolean v1_21_10;
     private static final boolean v1_21_11;
+    private static final boolean v26_1;
     private static final Class<?> UNOBFUSCATED_CLAZZ = Objects.requireNonNull(ReflectionUtils.getClazz(
             "net.minecraft.obfuscate.DontObfuscate", // 因为无混淆版本没有这个类所以说多写几个防止找不到了
             "net.minecraft.data.Main",
@@ -57,7 +58,7 @@ public class VersionHelper {
                     .split("-", 2)[0]  // 1.21.10-rc1          -> 1.21.10
                     .split("_", 2)[0]; // 1.21.11_unobfuscated -> 1.21.11
 
-            MINECRAFT_VERSION = new MinecraftVersion(versionString);
+            MINECRAFT_VERSION = MinecraftVersion.byName(versionString);
 
             String[] split = versionString.split("\\.");
             int major = Integer.parseInt(split[1]);
@@ -86,6 +87,7 @@ public class VersionHelper {
             v1_21_9 = version >= 12109;
             v1_21_10 = version >= 12110;
             v1_21_11 = version >= 12111;
+            v26_1 = version >= 12601;
 
             majorVersion = major;
             minorVersion = minor;
@@ -102,8 +104,9 @@ public class VersionHelper {
     }
 
     public static int parseVersionToInteger(String versionString) {
-        int major = 0;
-        int minor = 0;
+        int v1 = 0;
+        int v2 = 0;
+        int v3 = 0;
         int currentNumber = 0;
         int part = 0;
         for (int i = 0; i < versionString.length(); i++) {
@@ -111,8 +114,11 @@ public class VersionHelper {
             if (c >= '0' && c <= '9') {
                 currentNumber = currentNumber * 10 + (c - '0');
             } else if (c == '.') {
+                if (part == 0) {
+                    v1 = currentNumber;
+                }
                 if (part == 1) {
-                    major = currentNumber;
+                    v2 = currentNumber;
                 }
                 part++;
                 currentNumber = 0;
@@ -121,12 +127,23 @@ public class VersionHelper {
                 }
             }
         }
-        if (part == 1) {
-            major = currentNumber;
-        } else if (part == 2) {
-            minor = currentNumber;
+        // 处理最后一个数字部分
+        if (part == 0) {  // 没有点号：如 "26"
+            v1 = currentNumber;
+        } else if (part == 1) {  // 一个点号：如 "26.1"
+            v2 = currentNumber;
+        } else if (part == 2) {  // 两个点号：如 "1.2.3"
+            v3 = currentNumber;
+        }
+
+        // 新版命名法
+        if (v1 >= 26) {
+            return 10000 + v1 * 100 + v2;
+        }
+        // 旧版命名法
+        else {
+            return 10000 + v2 * 100 + v3;
         }
-        return 10000 + major * 100 + minor;
     }
 
     public static int majorVersion() {
@@ -269,4 +286,8 @@ public class VersionHelper {
     public static boolean isOrAbove1_21_11() {
         return v1_21_11;
     }
+
+    public static boolean isOrAbove26_1() {
+        return v26_1;
+    }
 }
\ No newline at end of file
diff --git a/gradle.properties b/gradle.properties
index baa9346aa..0c853f64d 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -3,7 +3,7 @@ org.gradle.jvmargs=-Xmx4G
 # Project settings
 project_version=0.0.66.5
 config_version=63
-lang_version=45
+lang_version=46
 project_group=net.momirealms
 latest_supported_version=1.21.11
 
@@ -38,7 +38,7 @@ zstd_version=1.5.7-6
 commons_io_version=2.21.0
 commons_lang3_version=3.20.0
 sparrow_nbt_version=0.10.9
-sparrow_util_version=0.75
+sparrow_util_version=0.76
 fastutil_version=8.5.18
 netty_version=4.1.128.Final
 joml_version=1.10.8