diff --git a/sources/talk/20161202 Reactive programming vs. Reactive systems.md b/sources/talk/20161202 Reactive programming vs. Reactive systems.md
index 58b3387349..19bf7ccb1e 100644
--- a/sources/talk/20161202 Reactive programming vs. Reactive systems.md	
+++ b/sources/talk/20161202 Reactive programming vs. Reactive systems.md	
@@ -1,3 +1,5 @@
+translating by XLCYun
+
 Reactive programming vs. Reactive systems
 ============================================================