diff --git a/What-is-rule-file-and-how-to-write.md b/What is rule file and how to write one.md
similarity index 99%
rename from What-is-rule-file-and-how-to-write.md
rename to What is rule file and how to write one.md
index e5648cf..863a883 100644
--- a/What-is-rule-file-and-how-to-write.md
+++ b/What is rule file and how to write one.md	
@@ -92,8 +92,8 @@ These interface can be grouped into the following phases
 * `pauseBeforeSendingResponse` pause time in ms before sending response to client.
 
 
-TODO
-req
+Tips about rule file
+------------------------