diff --git a/SUMMARY.md b/SUMMARY.md
index 27f42c2..5f88546 100644
--- a/SUMMARY.md
+++ b/SUMMARY.md
@@ -34,11 +34,11 @@
 * [第四章 RPC和Protobuf](ch4-rpc/readme.md)
    * [4.1. RPC入门](ch4-rpc/ch4-01-rpc-intro.md)
    * [4.2. Protobuf](ch4-rpc/ch4-02-pb-intro.md)
-   * [4.3. protorpc(TODO)](ch4-rpc/ch4-03-protorpc.md)
-   * [4.4. grpc(TODO)](ch4-rpc/ch4-04-grpc.md)
-   * [4.5. 反向rpc(TODO)](ch4-rpc/ch4-05-reverse-rpc.md)
-   * [4.6. Protobuf扩展(TODO)](ch4-rpc/ch4-06-pb-option.md)
-   * [4.7. 基于pb的rpc定制(TODO)](ch4-rpc/ch4-07-pb-rpc.md)
+   * [4.3. 玩转RPC(TODO)](ch4-rpc/ch4-03-netrpc-hack.md)
+   * [4.4. GRPC入门(TODO)](ch4-rpc/ch4-04-grpc.md)
+   * [4.5. GRPC进阶(TODO)](ch4-rpc/ch4-05-grpc-hack.md)
+   * [4.6. Protobuf扩展语法和插件(TODO)](ch4-rpc/ch4-06-pb-option.md)
+   * [4.7. 其它RPC系统(TODO)](ch4-rpc/ch4-07-other-rpc.md)
    * [4.8. 补充说明(TODO)](ch4-rpc/ch4-08-faq.md)
 * [第五章 Go和Web](ch5-web/readme.md)
    * [5.1. Web开发简介](ch5-web/ch5-01-introduction.md)
diff --git a/ch4-rpc/ch4-03-protorpc.md b/ch4-rpc/ch4-03-netrpc-hack.md
similarity index 80%
rename from ch4-rpc/ch4-03-protorpc.md
rename to ch4-rpc/ch4-03-netrpc-hack.md
index 413a5bb..c394f09 100644
--- a/ch4-rpc/ch4-03-protorpc.md
+++ b/ch4-rpc/ch4-03-netrpc-hack.md
@@ -1,9 +1,13 @@
-# 4.3. protorpc
+# 4.3. 玩转RPC
 
 TODO
 
 <!--
 
+认证/反向/gls？，能够拿到req吗，基于req的gls
+
+--
+
 pb 和 json 是类似的，
 
 唯一的差异的 protoc 工具
diff --git a/ch4-rpc/ch4-04-grpc.md b/ch4-rpc/ch4-04-grpc.md
index 882af54..0872864 100644
--- a/ch4-rpc/ch4-04-grpc.md
+++ b/ch4-rpc/ch4-04-grpc.md
@@ -1,8 +1,13 @@
-# 4.4. grpc
+# 4.4. GRPC入门
 
 TODO
 
 <!--
+
+入门/流/认证
+
+--
+
 简单介绍
 
 同步/异步
diff --git a/ch4-rpc/ch4-05-reverse-rpc.md b/ch4-rpc/ch4-05-grpc-hack.md
similarity index 75%
rename from ch4-rpc/ch4-05-reverse-rpc.md
rename to ch4-rpc/ch4-05-grpc-hack.md
index 244917d..bb4fa4e 100644
--- a/ch4-rpc/ch4-05-reverse-rpc.md
+++ b/ch4-rpc/ch4-05-grpc-hack.md
@@ -1,8 +1,15 @@
-# 4.5. 反向rpc
+# 4.5. GRPC进阶
 
 TODO
 
 <!--
+
+中间件/panic捕获/rest/参数认证
+
+swagger 文档
+
+--
+
 外网如何访问内网的rpc服务
 
 隐喻：让客服主动打电话给我，然后我反映问题，让客服解决问题
diff --git a/ch4-rpc/ch4-06-pb-option.md b/ch4-rpc/ch4-06-pb-option.md
index 9cd2abc..f3d0839 100644
--- a/ch4-rpc/ch4-06-pb-option.md
+++ b/ch4-rpc/ch4-06-pb-option.md
@@ -1,9 +1,13 @@
-# 4.6. Protobuf扩展
+# 4.6. Protobuf扩展语法和插件
 
 TODO
 
 <!--
 
+基本的用法，生成http路由，生成sdk
+
+--
+
 基于pb扩展，打造一个自定义的rpc
 
 请求/应答 api
diff --git a/ch4-rpc/ch4-07-other-rpc.md b/ch4-rpc/ch4-07-other-rpc.md
new file mode 100644
index 0000000..44d3187
--- /dev/null
+++ b/ch4-rpc/ch4-07-other-rpc.md
@@ -0,0 +1,9 @@
+# 4.7. 其它RPC系统
+
+TODO
+
+<!--
+
+灌水
+
+-->
diff --git a/ch4-rpc/ch4-07-pb-rpc.md b/ch4-rpc/ch4-07-pb-rpc.md
deleted file mode 100644
index 38a6550..0000000
--- a/ch4-rpc/ch4-07-pb-rpc.md
+++ /dev/null
@@ -1,9 +0,0 @@
-# 4.7. 基于pb的rpc定制
-
-TODO
-
-<!--
-和上节重复了吗？？
-
-
--->
diff --git a/ch4-rpc/ch4-08-faq.md b/ch4-rpc/ch4-08-faq.md
index 9e43979..11051a4 100644
--- a/ch4-rpc/ch4-08-faq.md
+++ b/ch4-rpc/ch4-08-faq.md
@@ -1,3 +1,8 @@
 # 4.8. 补充说明
 
 TODO
+
+<!--
+
+参考资料
+-->