diff --git a/README.md b/README.md
index 631a887..60adb7e 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
     <img src="http://7xn2zy.com1.z0.glb.clouddn.com/github_eruda2.jpg">
 </a>
 
-[中文](doc/README_CH.md)
+[中文](doc/README_CN.md)
 
 # Eruda
 
diff --git a/doc/README_CH.md b/doc/README_CN.md
similarity index 98%
rename from doc/README_CH.md
rename to doc/README_CN.md
index 3fec69e..ac88de9 100644
--- a/doc/README_CH.md
+++ b/doc/README_CN.md
@@ -82,7 +82,7 @@ eruda.init({
 
 ## Demo
 
-![Demo](http://7xn2zy.com1.z0.glb.clouddn.com/eruda_qrcode2.png)
+![Demo](http://7xn2zy.com1.z0.glb.clouddn.com/eruda_qrcode3.png)
 
 请扫描二维码或在手机上直接访问：[http://eruda.liriliri.io/](http://eruda.liriliri.io/)