diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
deleted file mode 100644
index ad9033d139abaa68750e3457547e40d1a0a28465..0000000000000000000000000000000000000000
--- a/CONTRIBUTING.md
+++ /dev/null
@@ -1,17 +0,0 @@
-# Welcome all contributors
-
-Please observe the following rules:
-* All bugs and features are managed in the [**Issues Page**](https://github.com/wu-sheng/sky-walking/issues).
-* All descriptions of features and bugs should be in English.
-
-## For All Contributors
-1. Create new issue, whether you want to report bugs or propose new features.
-1. Send a pr for your bugs or features. 
-1. @mention us(@wu-sheng or @sky-walking) to review your issue/pr.
-
-
-**Anyone, who contributes at least one plugin or new feature, can ask for joinging [sky-walking contributor organizations](https://github.com/sky-walking), by @mention us(@wu-sheng or @sky-walking) in your merged pr.**
-
----
-
-All features or bug-fix codes have been merged into this repo, they belong to sky-walking team, with [GPL-3.0](https://github.com/wu-sheng/sky-walking/blob/master/LICENSE) protocol.
diff --git a/README.md b/README.md
index dd3f4c5c155866e6b9885e979aface8f4a051ef5..e3799f4f9c49025aac6c6cf4fba94c305a95c89d 100644
--- a/README.md
+++ b/README.md
@@ -25,17 +25,17 @@ Sky Walking | [中文](README_ZH.md)
 * The UI released on [wu-sheng/sky-walking-ui](https://github.com/wu-sheng/sky-walking-ui)
 
 
-# Contributors
-_In chronological order_
-* 吴晟 [**PMC Member**] [@wu-sheng](https://github.com/wu-sheng) 
-* 张鑫 [**PMC Member**] [@ascrutae](https://github.com/ascrutae)   
-* 谭真 [@mircoteam](https://github.com/mircoteam)  Advanced R&D Engineers, Creative & Interactive Group.
-* 徐妍 [@TastySummer](https://github.com/TastySummer)
-* 彭勇升 [**PMC Member**] [@pengys5](https://github.com/pengys5) R&D director，Tydic
-* 戴文
+# PMC, Project Management Committee
+* 吴晟 [@wu-sheng](https://github.com/wu-sheng) 
+* 张鑫 [@ascrutae](https://github.com/ascrutae)
+* 彭勇升 [@peng-yongsheng](https://github.com/peng-yongsheng) R&D director，Tydic
+
+# Committer
 * 柏杨 [@bai-yang](https://github.com/bai-yang)  Senior Engineer, Alibaba Group.
-* 陈凤 [@trey03](https://github.com/trey03)
-* [More contributors](https://github.com/wu-sheng/sky-walking/graphs/contributors)
+
+# Contributors
+* [Contributor List](https://github.com/wu-sheng/sky-walking/graphs/contributors)
+* A special thanks to the contributors: 徐妍[@TastySummer](https://github.com/TastySummer) and 戴文, you offer huge helps for this project.
 
 This project adheres to the Contributor Covenant [code of conduct](CODE_OF_CONDUCT.md). By participating, you are expected to uphold this code. Please report unacceptable behavior to wu.sheng@foxmail.com.
 
@@ -76,3 +76,6 @@ This project adheres to the Contributor Covenant [code of conduct](CODE_OF_CONDU
 * [Gitter](https://gitter.im/sky-walking/Lobby)
 * [Google Mailing List](https://groups.google.com/forum/#!forum/skywalking-distributed-tracing-and-apm)
 * QQ Group: 392443393
+
+# License
+By contributing your code, you agree to license your contribution under the terms of the [sky-walking license](/LICENSE).
diff --git a/README_ZH.md b/README_ZH.md
index c484a6f26ec842c46ea66c55d5d79276f3ccba79..ed1a96897d77d178174e77a18668325f95f141d4 100644
--- a/README_ZH.md
+++ b/README_ZH.md
@@ -25,21 +25,19 @@ Sky Walking | [English](README.md)
 * UI工程请查看 [wu-sheng/sky-walking-ui](https://github.com/wu-sheng/sky-walking-ui)
 * 中文QQ群：392443393
 
+# PMC - Project Management Committee
+* 吴晟 [@wu-sheng](https://github.com/wu-sheng) 
+* 张鑫 [@ascrutae](https://github.com/ascrutae)
+* 彭勇升 [@peng-yongsheng](https://github.com/peng-yongsheng) R&D director，Tydic
 
-# Contributors
-_按首次加入时间排序_
-* 吴晟 [**PMC Member**] [@wu-sheng](https://github.com/wu-sheng) 
-* 张鑫 [**PMC Member**] [@ascrutae](https://github.com/ascrutae)   
-* 谭真 [@mircoteam](https://github.com/mircoteam)  Advanced R&D Engineers, Creative & Interactive Group.
-* 徐妍 [@TastySummer](https://github.com/TastySummer)
-* 彭勇升 [**PMC Member**] [@pengys5](https://github.com/pengys5) R&D director，Tydic
-* 戴文
+# Committer
 * 柏杨 [@bai-yang](https://github.com/bai-yang)  Senior Engineer, Alibaba Group.
-* 陈凤 [@trey03](https://github.com/trey03)
-* [其他贡献者](https://github.com/wu-sheng/sky-walking/graphs/contributors)
 
-This project adheres to the Contributor Covenant [code of conduct](CODE_OF_CONDUCT.md). By participating, you are expected to uphold this code. Please report unacceptable behavior to wu.sheng@foxmail.com.
+# Contributors
+* [Contributor List](https://github.com/wu-sheng/sky-walking/graphs/contributors)
+* 特别感谢徐妍[@TastySummer](https://github.com/TastySummer) 和 戴文, 给予项目的大量的帮助.
 
+This project adheres to the Contributor Covenant [code of conduct](CODE_OF_CONDUCT.md). By participating, you are expected to uphold this code. Please report unacceptable behavior to wu.sheng@foxmail.com.
 
 # Architecture
 * 3.2+版本架构图
@@ -79,3 +77,6 @@ This project adheres to the Contributor Covenant [code of conduct](CODE_OF_CONDU
 * [Gitter](https://gitter.im/sky-walking/Lobby)
 * [Google Mailing List](https://groups.google.com/forum/#!forum/skywalking-distributed-tracing-and-apm)
 * QQ群: 392443393
+
+# License
+所有贡献的代码，和 [sky-walking license](/LICENSE) 保持一致.