diff --git a/code/1/1.1.cpp b/code/1/1.1.cpp
index b7c1d46a..b5479f37 100644
--- a/code/1/1.1.cpp
+++ b/code/1/1.1.cpp
@@ -2,7 +2,7 @@
 // 1.1.cpp
 // c++1x tutorial
 //
-// created by changkun at shiyanlou.com
+// created by changkun at changkun.de
 //
 
 #include "foo.h"
diff --git a/code/1/foo.c b/code/1/foo.c
index 5c3668bd..a21621e2 100644
--- a/code/1/foo.c
+++ b/code/1/foo.c
@@ -2,7 +2,7 @@
 // foo.c
 // c++1x tutorial
 //
-// created by changkun at shiyanlou.com
+// created by changkun at changkun.de
 //
 
 
diff --git a/code/1/foo.h b/code/1/foo.h
index 6aa8ead8..b5d62c60 100644
--- a/code/1/foo.h
+++ b/code/1/foo.h
@@ -2,7 +2,7 @@
 // foo.h
 // c++1x tutorial
 //
-// created by changkun at shiyanlou.com
+// created by changkun at changkun.de
 //
 
 
diff --git a/code/2/2.1.cpp b/code/2/2.1.cpp
index ccdc6c45..f79e94b8 100644
--- a/code/2/2.1.cpp
+++ b/code/2/2.1.cpp
@@ -2,7 +2,7 @@
 // 2.1.cpp
 // c++1x tutorial
 //
-// created by changkun at shiyanlou.com
+// created by changkun at changkun.de
 //
 // nullptr
 
diff --git a/code/2/2.2.cpp b/code/2/2.2.cpp
index 3c115b9a..ee94910c 100644
--- a/code/2/2.2.cpp
+++ b/code/2/2.2.cpp
@@ -2,7 +2,7 @@
 // 2.2.cpp
 // c++1x tutorial
 //
-// created by changkun at shiyanlou.com
+// created by changkun at changkun.de
 //
 // constexpr
 
diff --git a/code/2/2.3.cpp b/code/2/2.3.cpp
index 39f206cd..e3d03879 100644
--- a/code/2/2.3.cpp
+++ b/code/2/2.3.cpp
@@ -2,7 +2,7 @@
 // 2.3.cpp
 // c++1x tutorial
 //
-// created by changkun at shiyanlou.com
+// created by changkun at changkun.de
 //
 // auto/decltype/尾返回类型/返回类型推导
 
diff --git a/code/2/2.4.cpp b/code/2/2.4.cpp
index 62b43516..c9cd59da 100644
--- a/code/2/2.4.cpp
+++ b/code/2/2.4.cpp
@@ -2,7 +2,7 @@
 // 2.4.cpp
 // c++1x tutorial
 //
-// created by changkun at shiyanlou.com
+// created by changkun at changkun.de
 //
 // 区间迭代
 
diff --git a/code/2/2.5.cpp b/code/2/2.5.cpp
index 7890fbaf..e082dd4f 100644
--- a/code/2/2.5.cpp
+++ b/code/2/2.5.cpp
@@ -2,7 +2,7 @@
 // 2.5.cpp
 // c++1x tutorial
 //
-// created by changkun at shiyanlou.com
+// created by changkun at changkun.de
 //
 // 初始化列表
 
diff --git a/code/2/2.6.cpp b/code/2/2.6.cpp
index 8fb3e947..91895d6d 100644
--- a/code/2/2.6.cpp
+++ b/code/2/2.6.cpp
@@ -2,7 +2,7 @@
 // 2.6.cpp
 // c++1x tutorial
 //
-// created by changkun at shiyanlou.com
+// created by changkun at changkun.de
 //
 // 模板增强
 
diff --git a/code/2/2.7.cpp b/code/2/2.7.cpp
index 1d7bc30f..da4f9c28 100644
--- a/code/2/2.7.cpp
+++ b/code/2/2.7.cpp
@@ -2,7 +2,7 @@
 // 2.7.cpp
 // c++1x tutorial
 //
-// created by changkun at shiyanlou.com
+// created by changkun at changkun.de
 //
 // 面向对象增强
 
diff --git a/code/2/2.8.cpp b/code/2/2.8.cpp
index 54e31963..ed72c6cc 100644
--- a/code/2/2.8.cpp
+++ b/code/2/2.8.cpp
@@ -2,7 +2,7 @@
 // 2.8.cpp
 // c++1x tutorial
 //
-// created by changkun at shiyanlou.com
+// created by changkun at changkun.de
 //
 // 强类型枚举
 
diff --git a/code/3/3.1.cpp b/code/3/3.1.cpp
index 3782544d..e179fdda 100644
--- a/code/3/3.1.cpp
+++ b/code/3/3.1.cpp
@@ -2,7 +2,7 @@
 // 3.1.cpp
 // c++1x tutorial
 //
-// created by changkun at shiyanlou.com
+// created by changkun at changkun.de
 //
 // lambda expression
 
diff --git a/code/3/3.2.cpp b/code/3/3.2.cpp
index 90b02770..e8ac6b8c 100644
--- a/code/3/3.2.cpp
+++ b/code/3/3.2.cpp
@@ -2,7 +2,7 @@
 // 3.2.cpp
 // c++1x tutorial
 //
-// created by changkun at shiyanlou.com
+// created by changkun at changkun.de
 //
 // std::function std::bind
 
diff --git a/code/3/3.3.cpp b/code/3/3.3.cpp
index 7bb5f075..df57aad4 100644
--- a/code/3/3.3.cpp
+++ b/code/3/3.3.cpp
@@ -2,7 +2,7 @@
 // 3.3.cpp
 // c++1x tutorial
 //
-// created by changkun at shiyanlou.com
+// created by changkun at changkun.de
 //
 // 右值引用 rvalue reference
 
diff --git a/code/3/3.4.cpp b/code/3/3.4.cpp
index f0c75a0e..66ee35a2 100644
--- a/code/3/3.4.cpp
+++ b/code/3/3.4.cpp
@@ -2,7 +2,7 @@
 // 3.4.cpp
 // c++1x tutorial
 //
-// created by changkun at shiyanlou.com
+// created by changkun at changkun.de
 //
 // 移动语义
 
diff --git a/code/3/3.5.cpp b/code/3/3.5.cpp
index f8eecae5..ce22c9ec 100644
--- a/code/3/3.5.cpp
+++ b/code/3/3.5.cpp
@@ -2,7 +2,7 @@
 // 3.5.cpp
 // c++1x tutorial
 //
-// created by changkun at shiyanlou.com
+// created by changkun at changkun.de
 //
 // 移动语义
 
diff --git a/code/3/3.6.cpp b/code/3/3.6.cpp
index b85f2ae2..5021e9e6 100644
--- a/code/3/3.6.cpp
+++ b/code/3/3.6.cpp
@@ -2,7 +2,7 @@
 // 3.6.cpp
 // c++1x tutorial
 //
-// created by changkun at shiyanlou.com
+// created by changkun at changkun.de
 //
 // 完美转发
 
diff --git a/code/4/4.1.cpp b/code/4/4.1.cpp
index fd6acbc1..21932a42 100644
--- a/code/4/4.1.cpp
+++ b/code/4/4.1.cpp
@@ -2,7 +2,7 @@
 // 4.1.cpp
 // c++1x tutorial
 //
-// created by changkun at shiyanlou.com
+// created by changkun at changkun.de
 //
 // std::array
 
diff --git a/code/4/4.2.cpp b/code/4/4.2.cpp
index 623dc843..6444eec3 100644
--- a/code/4/4.2.cpp
+++ b/code/4/4.2.cpp
@@ -2,7 +2,7 @@
 // 4.2.cpp
 // c++1x tutorial
 //
-// created by changkun at shiyanlou.com
+// created by changkun at changkun.de
 //
 // 无序容器
 
diff --git a/code/4/4.3.cpp b/code/4/4.3.cpp
index ff790b38..c635230d 100644
--- a/code/4/4.3.cpp
+++ b/code/4/4.3.cpp
@@ -2,7 +2,7 @@
 // 4.3.cpp
 // c++1x tutorial
 //
-// created by changkun at shiyanlou.com
+// created by changkun at changkun.de
 //
 // std::tuple 及其操作
 
diff --git a/code/6/6.1.cpp b/code/6/6.1.cpp
index d572a535..bd74b848 100644
--- a/code/6/6.1.cpp
+++ b/code/6/6.1.cpp
@@ -2,7 +2,7 @@
 // 6.1.cpp
 // c++1x tutorial
 //
-// created by changkun at shiyanlou.com
+// created by changkun at changkun.de
 //
 // 正则表达式库
 
diff --git a/code/7/7.1.cpp b/code/7/7.1.cpp
index 793da95d..6ee7e8b7 100644
--- a/code/7/7.1.cpp
+++ b/code/7/7.1.cpp
@@ -2,7 +2,7 @@
 // 7.1.cpp
 // c++1x tutorial
 //
-// created by changkun at shiyanlou.com
+// created by changkun at changkun.de
 //
 // 线程支持库
 
diff --git a/code/7/7.2.cpp b/code/7/7.2.cpp
index c8199a2c..7fd9d877 100644
--- a/code/7/7.2.cpp
+++ b/code/7/7.2.cpp
@@ -2,7 +2,7 @@
 // 7.2.cpp
 // c++1x tutorial
 //
-// created by changkun at shiyanlou.com
+// created by changkun at changkun.de
 //
 // 生产者消费者模型
 
diff --git a/code/8/8.1.cpp b/code/8/8.1.cpp
index 4aab0a4b..3875ebab 100644
--- a/code/8/8.1.cpp
+++ b/code/8/8.1.cpp
@@ -2,7 +2,7 @@
 // 8.1.cpp
 // c++1x tutorial
 //
-// created by changkun at shiyanlou.com
+// created by changkun at changkun.de
 //
 // noexcept
 
diff --git a/code/8/8.2.cpp b/code/8/8.2.cpp
index 60f0594a..34526df8 100644
--- a/code/8/8.2.cpp
+++ b/code/8/8.2.cpp
@@ -2,7 +2,7 @@
 // 8.2.cpp
 // c++1x tutorial
 //
-// created by changkun at shiyanlou.com
+// created by changkun at changkun.de
 //
 // 字面量