diff --git a/sources/tech/20180306 How to apply Machine Learning to IoT using Android Things and TensorFlow.md b/sources/tech/20180306 How to apply Machine Learning to IoT using Android Things and TensorFlow.md
index 60119f96c6..68ed3bf05f 100644
--- a/sources/tech/20180306 How to apply Machine Learning to IoT using Android Things and TensorFlow.md	
+++ b/sources/tech/20180306 How to apply Machine Learning to IoT using Android Things and TensorFlow.md	
@@ -1,3 +1,4 @@
+Translating by qhwdw
 How to apply Machine Learning to IoT using Android Things and TensorFlow
 ============================================================ 
 
diff --git a/sources/tech/20180327 How to build a digital pinhole camera with a Raspberry Pi.md b/sources/tech/20180327 How to build a digital pinhole camera with a Raspberry Pi.md
index 60a19fb581..21f64eb3f0 100644
--- a/sources/tech/20180327 How to build a digital pinhole camera with a Raspberry Pi.md	
+++ b/sources/tech/20180327 How to build a digital pinhole camera with a Raspberry Pi.md	
@@ -1,3 +1,4 @@
+Translating by qhwdw
 How to build a digital pinhole camera with a Raspberry Pi
 ======
 
diff --git a/sources/tech/20180327 Reliable IoT event logging with syslog-ng.md b/sources/tech/20180327 Reliable IoT event logging with syslog-ng.md
index 89ffed382f..eb28c2ac1f 100644
--- a/sources/tech/20180327 Reliable IoT event logging with syslog-ng.md	
+++ b/sources/tech/20180327 Reliable IoT event logging with syslog-ng.md	
@@ -1,3 +1,4 @@
+Translating by qhwdw
 Reliable IoT event logging with syslog-ng
 ======
 
diff --git a/sources/tech/20180328 Build a baby monitor with a Raspberry Pi.md b/sources/tech/20180328 Build a baby monitor with a Raspberry Pi.md
index 0e83af2d07..0cc6eda540 100644
--- a/sources/tech/20180328 Build a baby monitor with a Raspberry Pi.md	
+++ b/sources/tech/20180328 Build a baby monitor with a Raspberry Pi.md	
@@ -1,3 +1,4 @@
+Translating by qhwdw
 Build a baby monitor with a Raspberry Pi
 ======
 
diff --git a/sources/tech/20180331 How to build a plotter with Arduino.md b/sources/tech/20180331 How to build a plotter with Arduino.md
index bd7f95c160..daebb3ec54 100644
--- a/sources/tech/20180331 How to build a plotter with Arduino.md	
+++ b/sources/tech/20180331 How to build a plotter with Arduino.md	
@@ -1,3 +1,4 @@
+Translating by qhwdw
 How to build a plotter with Arduino
 ======