diff --git a/web/oracle/index.md b/web/oracle/index.md
index 9f01e68..ed8663f 100644
--- a/web/oracle/index.md
+++ b/web/oracle/index.md
@@ -13,7 +13,7 @@ author: Ada
 **Zhuàngzi**
 **莊子**
 
-### ✧ Preface - INTRO---
+### ✧ Preface
 
 Have you ever woken up feeling like there is a word on the tip of your tongue in a language you don't quite understand?