Use Baidu's Image Host.

Author: yanglr

_includes/copyright.html

@@ -42,7 +42,7 @@ <h3>版权声明</h3>
         <img src="//cdn.jsdelivr.net/gh/yanglr/yanglr.github.io/assets/images/copyrighttypes/{{ page.copyright }}.jpg"
             width="300" height="300">
         {% else %}
-        <img src="//cdn.jsdelivr.net/gh/yanglr/yanglr.github.io/assets/images/dotnet.jpg" width="300" height="300">
+        <img src="https://b.bdstatic.com/comment/btVm9ENZ4h2RcfZN9yiixw7c943672d1979740c34146d4aa8252a3.jpg" width="300" height="300">
         {% endif %}
         <br />
         一个有故事的程序员