diff --git a/mkdocs.yml b/mkdocs.yml
index 7c5dd78b..bb53af32 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -44,7 +44,7 @@ nav:
     - 北美洲:
       - 北美洲数据总览: flying/na.md
       - 美国案例:
-        - DKU (ECE), Rochester (CE), USC (CE), UCI (CE), UOM (robotics), UOM (EE control)@23fall: flying/na/2023/案例1.md
+        - 南加州大学@23fall: flying/na/2023/案例1.md
       - 加拿大案例:
         - college major @23fall: flying/eu/2023/temp.md
     - 欧洲: