diff --git a/README.md b/README.md
index da23fb9..599b5e0 100644
--- a/README.md
+++ b/README.md
@@ -1,49 +1,8 @@
 # Summary
 
 ## Course
+课程内容请移步 <a href=https://github.com/jackfrued/Python-100-Days>Python100天</a>
 
-* [Introduction](README.md)
-
-## Basic
-
-* [Basic](basic/basic.md)
-  * [VersionControl](basic/basic/ban-ben-kong-zhi.md)
-
-## Web
-
-* [Web](web/web.md)
-  * [HTML](web/web/html.md)
-  * [CSS](web/web/css.md)
-  * [JavaScript](web/web/javascript.md)
-* [Linux](web/linux.md)
-* [Django](web/django.md)
-  * [Django-Introduction](web/django/introduction.md)
-  * [RESTful](web/flask/restful.md)
-  * [Django REST framework](web/django/django-rest-framework.md)
-* [Flask](web/flask.md)
-  * [Flask-Introduction](web/flask/introduction.md)
-  * [Flask-RESTful](web/flask/flask-restful.md)
-* [Tornado](web/tornado.md)
-
-## Spider
-
-* [SpiderBasic](spider/spider.md)
-  * [urllib](spider/urllib.md)
-  * [request](spider/request.md)
-  * [selenium](spider/selenium.md)
-* [pickup](spider/request/urllib.md)
-  * [lxml](spider/request/urllib/lxml.md)
-  * [BeautifulSoup](spider/request/urllib/beautifulsoup.md)
-* [SpiderFramework](spider/scrapy.md)
-  * [Scrapy](spider/scrapy/scrapy.md)
-
-## DA&AI
-
-* [DA](daandai/da.md)
-  * [IPython](daandai/da/ipython.md)
-  * [Numpy](daandai/da/numpy.md)
-  * [pandas](daandai/da/pandas.md)
-* [AI](daandai/ai.md)
 
 ## Welfare
 
diff --git a/SUMMARY.md b/SUMMARY.md
index 5860f75..bae4752 100644
--- a/SUMMARY.md
+++ b/SUMMARY.md
@@ -40,6 +40,7 @@
 ## Spider
 
 * [SpiderBasic](spider/spider.md)
+  * [packet capture](spider/zhua-bao.md)
   * [urllib](spider/urllib.md)
   * [request](spider/request.md)
   * [selenium](spider/selenium.md)
diff --git a/spider/zhua-bao.md b/spider/zhua-bao.md
new file mode 100644
index 0000000..974159c
--- /dev/null
+++ b/spider/zhua-bao.md
@@ -0,0 +1,11 @@
+# Packet Capture
+
+Packet Capture（抓包）就是讲网络传输发送与接收的数据包进行截获，重发，编辑，转存等操作，也用来检查网络安全，抓包也经常来进行数据截取。
+
+### 常用抓包工具
+
+* Fiddler
+* Charles
+
+
+
diff --git a/welfare/ke-xue-shang-wang.md b/welfare/ke-xue-shang-wang.md
index 42993f0..33d87c8 100644
--- a/welfare/ke-xue-shang-wang.md
+++ b/welfare/ke-xue-shang-wang.md
@@ -32,7 +32,7 @@
 3. apt update，更新软件源
 4. apt install python-pip，安装python包管理工具
 5. pip install shadowsocks，安装科学上网软件
-6. 安装锐速(锐速不支持Openvz！)TCP加速
+6. 安装锐速(锐速不支持Openvz！)TCP加速(可选)
     - `` wget -N --no-check-certificate https://github.com/91yun/serverspeeder/raw/master/serverspeeder.sh && bash serverspeeder.sh`` 
 
 #### 第五步，配置软件