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+++ b/README.md
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 [点这里可以切换到中文版](README_CN.md)
 
-<img src="doc/main.jpg" width="80%">
+<img src="doc/main.gif" width="90%">
 
 **Features:**
 * It's small, smallest as far as I know.
diff --git a/README_CN.md b/README_CN.md
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--- a/README_CN.md
+++ b/README_CN.md
@@ -3,7 +3,7 @@
 
 [Click here for the English version of this guide.](README.md)
 
-<img src="doc/main.jpg" width="80%">
+<img src="doc/main.gif" width="90%">
 
 
 为了省事，本文档是我从原先英文版翻译回中文的，高度依赖了 GitHub Copilot (GPT)，所以语气可能怪怪的，见谅。
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