diff --git a/ZhaoHong_EICL1st.md b/ZhaoHong_EICL1st.md
index 96d898b..ab05221 100644
--- a/ZhaoHong_EICL1st.md
+++ b/ZhaoHong_EICL1st.md
@@ -327,5 +327,5 @@ No.35
 		- The final exam was nerve-wracking for all the students.
 
 ### 2024.7.1
-https://www.bilibili.com/video/BV1U7411a7xG?p=31
+https://www.bilibili.com/video/BV1U7411a7xG?p=36