diff --git a/readme/zt.md b/readme/zt.md
index 7bd4346abb..2a338ce07b 100644
--- a/readme/zt.md
+++ b/readme/zt.md
@@ -91,6 +91,7 @@
 
 **更多信息**
 * [Myth Catalog](../subfiles/myth_catalog.md)
+* [How many % of top 1,000 most visited sites(2010) are using Cloudflare today?](../subfiles/google_ad_planner_top_1000_sites.md)
 * [The Great Cloudwall](../pdf/2019-Jeff_Cliff_Book1.txt), [Mr. Jeff Cliff](https://shitposter.club/users/jeffcliff)
   * 下載: [PDF](../pdf/2019-The_Great_Cloudwall.pdf), [ePUB](../pdf/2019-Jeff_Cliff_The_Great_Cloudwall.epub)
   * 由於侵犯CC0資料的版權，BookRix GmbH刪除了原始電子書（ePUB）