diff --git a/README b/README
index 2d66f5c..2fe398c 100644
--- a/README
+++ b/README
@@ -12,7 +12,7 @@ The documents in the files that constitute ucore are Copyright (2010-Current) Yu
 PEOPLES 
 ========
 
-OS course for Yao class, fall, 2013
+OS course for Dept. CS. in Tsinghua Univ., and MOOC OS course
 -----------------------------------
 Lectures: Chen, Yu   http://soft.cs.tsinghua.edu.cn/~chen
 TA: Qi, Xiao  qixiao0113@gmail.com
@@ -21,12 +21,12 @@ TA: Mao, Junjie eternal.n08@gmail.com
 CONTENTS
 ========
 
-Notes, Lectures OS course for Yao class, fall, 2013
------------------
-lec1: os intro 09162013
+os course info
+----------------
+[os course summary materials](https://github.com/chyyuu/mooc_os)
 
 labs info
-----------------]
+----------------
 lab0: preparing
 lab1: boot/protect mode/stack/interrupt
 lab2: physical memory management
@@ -116,9 +116,9 @@ The newest lab codes and docs is in https://github.com/chyyuu/ucore_plus
 LEARNING DISSCUSS GROUPS
 ========================
 
-OS course for Yao class, fall, 2013
-----------------------------------
-OS course for Yao class discuss site is in https://piazza.com/class/hlhc2vatkon361
+os learning group based on QQ 
+-------------------------------
+QQ id: 181873534
 
 general discuss
 --------------------------------
diff --git a/README-chinese.md b/README-chinese.md
index c05828d..71df1d1 100644
--- a/README-chinese.md
+++ b/README-chinese.md
@@ -23,6 +23,10 @@ Attribution/Share-Alike (CC-BY-SA) License.
 陈一璋
 ...
 
+# 课程汇总信息
+
+ -[课程汇总](https://github.com/chyyuu/mooc_os)
+
 # 实验内容
 
 1. lab0 : 完成实验环境的搭建，熟悉基本的Linux命令和工具
@@ -156,4 +160,4 @@ S郭晓林、薛天凡、胡刚、刘超、粟裕、袁昕颢...
 # NOTICE
 
 如果你发现了问题，有好的建议或意见,请给 yuchen AT tsinghua.edu.cn 发电邮；
-如果你完成这8个实验，且对进一步探索、研究、研发操作系统感兴趣，请给 yuchen AT tsinghua.edu.cn 发电邮，欢迎加入我们的OS兴趣小组，共同进步！
\ No newline at end of file
+如果你完成这8个实验，且对进一步探索、研究、研发操作系统感兴趣，请给 yuchen AT tsinghua.edu.cn 发电邮，欢迎加入我们的OS兴趣小组，共同进步！