diff --git a/doc/README_CN.md b/doc/README_CN.md
index 8e19087..1049afe 100644
--- a/doc/README_CN.md
+++ b/doc/README_CN.md
@@ -455,6 +455,7 @@ RedGuard接收到请求：
 > https://isc.n.cn/m/pages/live/index?channel_id=iscyY043&ncode=UR6KZ&room_id=1981905&server_id=785016&tab_id=253
 > 
 > 基于边界节点链路交互C2流量
+> 
 > https://www.anquanke.com/post/id/278140
 >
 > 云沙箱流量识别技术剖析