diff --git a/Assets/Res/ui/selfpage/设备教学-中文.prefab b/Assets/Res/ui/selfpage/设备教学-中文.prefab
index c93d233..42cec07 100644
--- a/Assets/Res/ui/selfpage/设备教学-中文.prefab
+++ b/Assets/Res/ui/selfpage/设备教学-中文.prefab
@@ -4733,7 +4733,7 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 86fb6d9da09c7e84585340890874f0d0, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
-  videoUrl: https://d1le8tk1c3nn33.cloudfront.net/videos/res/teaching/EN/device.mp4
+  videoUrl: https://d1le8tk1c3nn33.cloudfront.net/videos/res/teaching/CN/9.mp4
   imageUrl: https://d1le8tk1c3nn33.cloudfront.net/videos/res/teaching/EN/device.jpg
   image: {fileID: 1352989505094308909}
 --- !u!114 &3753991648909919946
diff --git a/Assets/Res/ui/selfpage/设备教学-英文.prefab b/Assets/Res/ui/selfpage/设备教学-英文.prefab
index 4a61dfa..b480d31 100644
--- a/Assets/Res/ui/selfpage/设备教学-英文.prefab
+++ b/Assets/Res/ui/selfpage/设备教学-英文.prefab
@@ -2413,7 +2413,7 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 86fb6d9da09c7e84585340890874f0d0, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
-  videoUrl: https://d1le8tk1c3nn33.cloudfront.net/videos/res/teaching/EN/device.mp4
+  videoUrl: https://d1le8tk1c3nn33.cloudfront.net/videos/res/teaching/EN/9.mp4
   imageUrl: https://d1le8tk1c3nn33.cloudfront.net/videos/res/teaching/EN/device.jpg
   image: {fileID: 6914435100606231611}
 --- !u!114 &1083442124998672116