diff --git a/lab1122/note.md b/lab1122/note.md
index b3c30e16f48a21aa42eb654913cd75c6adc6d777..5001c04f9e13da281bb5065866b531da08282c97 100644
--- a/lab1122/note.md
+++ b/lab1122/note.md
@@ -1,5 +1,7 @@
 # 1122 Note
 
-## main : learn about branch
+## main: learn about branch
 
 ## br_A: AAAA
+
+#### main: MMM