diff --git a/en/Development-And-Common-Documents/Basic_Operation/Address_Source_Lanzhou_University_Mirror.md b/en/Development-And-Common-Documents/Basic_Operation/Address_Source_Lanzhou_University_Mirror.md
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+# <center>Replace the address of the source server with the mirror image of Lanzhou University</center>
+#### <center>Author: lerambo</center>
+#### <center>2022-08-04 11:25:00</center>
+
+
+### 1. Enter the command
+```bash
+sudo pluma /etc/apt/sources.list
+```
+### 2. Replace the mirror address of the file content
+```bash
+#Original mirror address
+#deb http://archive.build.openkylin.top/openkylin/ yangtze main cross pty
+#deb http://archive.build.openkylin.top/openkylin/ yangtze-security main cross pty
+#deb http://archive.build.openkylin.top/openkylin/ yangtze-updates main cross pty
+
+
+#Lanzhou University mirror address
+deb http://mirror.lzu.edu.cn/openkylin/ yangtze main cross pty
+deb http://mirror.lzu.edu.cn/openkylin/ yangtze-security main cross pty
+deb http://mirror.lzu.edu.cn/openkylin/ yangtze-updates main cross pty
+```
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