diff --git a/README.md b/README.md
index 8b350d175..19b7d5c3d 100644
--- a/README.md
+++ b/README.md
@@ -20,7 +20,7 @@
 <a href="https://github.com/liangjingkanji/Net/blob/master/docs/issues.md"><img src="https://raw.githubusercontent.com/liangjingkanji/Net/master/docs/img/issues.svg"/></a>
 </p>
 
-<p align="center"><img src="https://github.com/liangjingkanji/Net/assets/21078112/c33d8a25-0a53-4594-a10a-026a5278432d" align="center" width="30%;" /></p>
+<p align="center"><img src="https://raw.githubusercontent.com/liangjingkanji/Net/master/docs/img/code-preview.png" align="center" width="30%;" /></p>
 
 <br>
 
diff --git a/docs/img/code-preview.png b/docs/img/code-preview.png
new file mode 100644
index 000000000..b6fd23b99
Binary files /dev/null and b/docs/img/code-preview.png differ