diff --git a/README.md b/README.md
index a2cd897..38e64d2 100644
--- a/README.md
+++ b/README.md
@@ -7,4 +7,6 @@
 + [.Net Interactive](https://github.com/dotnet/interactive)
 + [csharp-notebooks(已归档)](https://github.com/dotnet/csharp-notebooks)
 + b站有相关视频，E文的较多
+
+镜像测试下
  
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