diff --git a/sources/tech/20170530 How to Improve a Legacy Codebase.md b/sources/tech/20170530 How to Improve a Legacy Codebase.md
index a2d1869abb..cff5e70538 100644
--- a/sources/tech/20170530 How to Improve a Legacy Codebase.md	
+++ b/sources/tech/20170530 How to Improve a Legacy Codebase.md	
@@ -1,3 +1,4 @@
+Translating by aiwhj
 # How to Improve a Legacy Codebase