diff --git a/README.md b/README.md
index 7ffc91c..5cf34fa 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,6 @@
 # xsynergy-android
 
-AR远程协作安卓客户端
\ No newline at end of file
+AR远程协作安卓客户端
+
+1, prd.md: product document
+2, ui.html: ui prototype