diff --git a/doc/doc-test.txt b/doc/doc-test.txt
index 9f74cd4..bd6582a 100644
--- a/doc/doc-test.txt
+++ b/doc/doc-test.txt
@@ -1 +1,2 @@
-this is a testing file in doc folder.
\ No newline at end of file
+this is a testing file in doc folder.
+in yuan-branch
\ No newline at end of file