diff --git a/lab1122/note.md b/lab1122/note.md
index 14f28dce39dc2380c064fc3b9704a993c11fb1a9..74609bb1c690a58752c66701ea22c23b79d0b488 100644
--- a/lab1122/note.md
+++ b/lab1122/note.md
@@ -1,3 +1,5 @@
 1122 note
 
+## main : write in the main branch
+
 ## brA: write in the brA branch