[ci skip] Add RainYun ad

README.md

@@ -123,7 +123,7 @@ If these excellent projects hadn't existed, Leaf wouldn't have become great.
 </details>
 
 ## 🔥 Special Thanks
-<a href="https://cloud.swordsman.com.cn/"><img src="public/image/JiankeServer.jpg" alt="Jianke Cloud Host" align="left" hspace="8"></a>
+[![Jianke Cloud Host](public/image/JiankeServer.jpg)](https://cloud.swordsman.com.cn/?i8ab42c) \
 cloud of swordsman | 剑客云
 
 If you want to find a cheaper, high performance, stable, lower latency host, then cloud of swordsman is a good choice! Registers and purchases in [here](https://cloud.swordsman.com.cn/?i8ab42c).
@@ -131,7 +131,15 @@ If you want to find a cheaper, high performance, stable, lower latency host, the
 如果你想找一个低价高性能、低延迟的云服务商，剑客云是个不错的选择！你可以在 [这里](https://cloud.swordsman.com.cn/?i8ab42c) 注册。
 
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-![YourKit](https://www.yourkit.com/images/yklogo.png)
+[![雨云](public/image/RainYun.jpg)](https://www.rainyun.com/NzE2NTc1_) \
+RainYun | 雨云
+
+Global multi-line routing with cloud storage. Refund available within 7 days. Reliable uptime and expert support. RainYun — stable, cost-effective, and ready for fast cloud deployment. Visit [RainYun]([雨云](https://www.rainyun.com/NzE2NTc1_))
+
+国际多线路选择，配套云存储 — 购买服务后七天内不满意可以申请退订，强大的技术支持团队和高在线率客服。雨云云服务器，用稳定和性价比，助力您快速上云。点击前往 [雨云](https://www.rainyun.com/NzE2NTc1_)。
+
+---
+![YourKit](https://www.yourkit.com/images/yklogo.png) \
 
 YourKit supports open source projects with innovative and intelligent tools 
 for monitoring and profiling Java and .NET applications.