diff --git a/free-programming-books-zh.md b/free-programming-books-zh.md
index 5bb71c609..3418c1a30 100644
--- a/free-programming-books-zh.md
+++ b/free-programming-books-zh.md
@@ -26,6 +26,7 @@
 
 
 ### 语言无关
+* [一步步搭建物联网系统](https://github.com/gmszone/designiot)
 
 #### 在线教育
 * [MIT OCW -- 麻省理工学院“开放式课程网页”](http://ocw.mit.edu/courses/translated-courses/simplified-chinese/)