diff --git a/tools/guess-your-last-name/index.md b/tools/guess-your-last-name/index.md
index b39f6df..1329858 100644
--- a/tools/guess-your-last-name/index.md
+++ b/tools/guess-your-last-name/index.md
@@ -2,6 +2,8 @@
 
 衍生自神奇的数电课件
 
+*只能猜 64 个常用姓氏*
+
 <GuessYourLastName />
 
 <script setup lang="ts">