diff --git a/sources/tech/20170317 How to control GPIO pins and operate relays with the Raspberry Pi.md b/sources/tech/20170317 How to control GPIO pins and operate relays with the Raspberry Pi.md
index b8409c85f3..71a5bf4fd2 100644
--- a/sources/tech/20170317 How to control GPIO pins and operate relays with the Raspberry Pi.md	
+++ b/sources/tech/20170317 How to control GPIO pins and operate relays with the Raspberry Pi.md	
@@ -1,3 +1,5 @@
+being translated by zhousiyu325
+
 How to control GPIO pins and operate relays with the Raspberry Pi
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