diff --git a/api/project.py b/api/project.py
index a24660f..c18062f 100644
--- a/api/project.py
+++ b/api/project.py
@@ -30,6 +30,7 @@ def copy_project(source: str, new: str) -> None:
             cur.execute(f'create database "{new}" with template = {source}')
 
 # 2025-02-07, WMH
+# copyproject会把pg中operation这个表的全部内容也加进去，我们实际项目运行一周后operation这个表会变得特别大，导致CopyProject花费的时间很长，CopyProjectEx把operation的在复制时没有一块复制过去，节省时间
 class CopyProjectEx:
     @ staticmethod
     def create_database(connection, new_db):