diff --git a/core/src/main/java/net/momirealms/craftengine/core/block/ImmutableBlockState.java b/core/src/main/java/net/momirealms/craftengine/core/block/ImmutableBlockState.java
index 95ea103ce..8eb70038f 100644
--- a/core/src/main/java/net/momirealms/craftengine/core/block/ImmutableBlockState.java
+++ b/core/src/main/java/net/momirealms/craftengine/core/block/ImmutableBlockState.java
@@ -29,7 +29,6 @@ public final class ImmutableBlockState extends BlockStateHolder {
     private BlockStateWrapper customBlockState;
     private BlockStateWrapper vanillaBlockState;
     private BlockBehavior behavior;
-    private Integer hashCode;
     private BlockSettings settings;
     private BlockEntityType<? extends BlockEntity> blockEntityType;
     @Nullable
@@ -78,27 +77,12 @@ public final class ImmutableBlockState extends BlockStateHolder {
         this.renderers = renderers;
     }
 
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) return true;
-        if (!(o instanceof ImmutableBlockState state)) return false;
-        return state.owner == this.owner && state.tag.equals(this.tag);
-    }
-
-    @Override
-    public int hashCode() {
-        if (this.hashCode == null) {
-            this.hashCode = getNbtToSave().hashCode();
-        }
-        return this.hashCode;
-    }
-
     public boolean hasBlockEntity() {
         return this.blockEntityType != null;
     }
 
     public boolean hasBlockEntityRenderer() {
-        return this.renderers != null;
+        return this.renderers != null ;
     }
 
     public BlockStateWrapper customBlockState() {
diff --git a/core/src/main/java/net/momirealms/craftengine/core/util/Int2ObjectBiMap.java b/core/src/main/java/net/momirealms/craftengine/core/util/Int2ObjectBiMap.java
index 297d49600..76cbad82e 100644
--- a/core/src/main/java/net/momirealms/craftengine/core/util/Int2ObjectBiMap.java
+++ b/core/src/main/java/net/momirealms/craftengine/core/util/Int2ObjectBiMap.java
@@ -126,7 +126,7 @@ public class Int2ObjectBiMap<K> implements IndexedIterable<K> {
 
     private int findIndex(@Nullable K value, int id) {
         int i;
-        for(i = id; i < this.values.length; ++i) {
+        for (i = id; i < this.values.length; ++i) {
             if (this.values[i] == value) {
                 return i;
             }
@@ -136,7 +136,7 @@ public class Int2ObjectBiMap<K> implements IndexedIterable<K> {
             }
         }
 
-        for(i = 0; i < id; ++i) {
+        for (i = 0; i < id; ++i) {
             if (this.values[i] == value) {
                 return i;
             }