diff --git a/Makefile b/Makefile
index e9bddd6..22c1acc 100644
--- a/Makefile
+++ b/Makefile
@@ -3,22 +3,16 @@
 # license that can be found in the LICENSE file.
 
 #
-# fix gitbook build error on macOS(node@8.x and gitbook@2.6.7)
-#
-# gitbook fetch 3.2.3
-# gitbook build --gitbook=3.2.3
-#
-# https://github.com/GitbookIO/gitbook/issues/1774
-# https://github.com/GitbookIO/gitbook-cli/blob/master/README.md
+# MnBook: Mini Markdown Book
+# https://github.com/wa-lang/mnbook
 #
 
 default:
-	mdbook serve
-
+	mnbook serve
 
 build:
 	-rm book
-	mdbook build
+	mnbook build
 	-rm book/.gitignore
 	-rm book/.nojekyll
 	-rm -rf book/.git
diff --git a/SUMMARY.md b/SUMMARY.md
index 685aa85..96ab462 100644
--- a/SUMMARY.md
+++ b/SUMMARY.md
@@ -13,59 +13,59 @@
   - [错误和异常](ch1-basic/ch1-07-error-and-panic.md)
   - [补充说明](ch1-basic/ch1-08-ext.md)
 - [CGO编程](ch2-cgo/readme.md)
-   - [快速入门](ch2-cgo/ch2-01-hello-cgo.md)
-   - [CGO基础](ch2-cgo/ch2-02-basic.md)
-   - [类型转换](ch2-cgo/ch2-03-cgo-types.md)
-   - [函数调用](ch2-cgo/ch2-04-func.md)
-   - [内部机制](ch2-cgo/ch2-05-internal.md)
-   - [实战: 封装qsort](ch2-cgo/ch2-06-qsort.md)
-   - [CGO内存模型](ch2-cgo/ch2-07-memory.md)
-   - [C++类包装](ch2-cgo/ch2-08-class.md)
-   - [静态库和动态库](ch2-cgo/ch2-09-static-shared-lib.md)
-   - [编译和链接参数](ch2-cgo/ch2-10-link.md)
-   - [补充说明](ch2-cgo/ch2-11-ext.md)
+  - [快速入门](ch2-cgo/ch2-01-hello-cgo.md)
+  - [CGO基础](ch2-cgo/ch2-02-basic.md)
+  - [类型转换](ch2-cgo/ch2-03-cgo-types.md)
+  - [函数调用](ch2-cgo/ch2-04-func.md)
+  - [内部机制](ch2-cgo/ch2-05-internal.md)
+  - [实战: 封装qsort](ch2-cgo/ch2-06-qsort.md)
+  - [CGO内存模型](ch2-cgo/ch2-07-memory.md)
+  - [C++类包装](ch2-cgo/ch2-08-class.md)
+  - [静态库和动态库](ch2-cgo/ch2-09-static-shared-lib.md)
+  - [编译和链接参数](ch2-cgo/ch2-10-link.md)
+  - [补充说明](ch2-cgo/ch2-11-ext.md)
 - [汇编语言](ch3-asm/readme.md)
-   - [快速入门](ch3-asm/ch3-01-basic.md)
-   - [计算机结构](ch3-asm/ch3-02-arch.md)
-   - [常量和全局变量](ch3-asm/ch3-03-const-and-var.md)
-   - [函数](ch3-asm/ch3-04-func.md)
-   - [控制流](ch3-asm/ch3-05-control-flow.md)
-   - [再论函数](ch3-asm/ch3-06-func-again.md)
-   - [汇编语言的威力](ch3-asm/ch3-07-hack-asm.md)
-   - [例子：Goroutine ID](ch3-asm/ch3-08-goroutine-id.md)
-   - [Delve调试器](ch3-asm/ch3-09-debug.md)
-   - [补充说明](ch3-asm/ch3-10-ext.md)
+  - [快速入门](ch3-asm/ch3-01-basic.md)
+  - [计算机结构](ch3-asm/ch3-02-arch.md)
+  - [常量和全局变量](ch3-asm/ch3-03-const-and-var.md)
+  - [函数](ch3-asm/ch3-04-func.md)
+  - [控制流](ch3-asm/ch3-05-control-flow.md)
+  - [再论函数](ch3-asm/ch3-06-func-again.md)
+  - [汇编语言的威力](ch3-asm/ch3-07-hack-asm.md)
+  - [例子：Goroutine ID](ch3-asm/ch3-08-goroutine-id.md)
+  - [Delve调试器](ch3-asm/ch3-09-debug.md)
+  - [补充说明](ch3-asm/ch3-10-ext.md)
 - [第4章 RPC和Protobuf](ch4-rpc/readme.md)
-   - [RPC入门](ch4-rpc/ch4-01-rpc-intro.md)
-   - [Protobuf](ch4-rpc/ch4-02-pb-intro.md)
-   - [玩转RPC](ch4-rpc/ch4-03-netrpc-hack.md)
-   - [gRPC入门](ch4-rpc/ch4-04-grpc.md)
-   - [gRPC进阶](ch4-rpc/ch4-05-grpc-hack.md)
-   - [gRPC和Protobuf扩展](ch4-rpc/ch4-06-grpc-ext.md)
-   - [pbgo: 基于Protobuf的框架](ch4-rpc/ch4-07-pbgo.md)
-   - [grpcurl工具](ch4-rpc/ch4-08-grpcurl.md)
-   - [补充说明](ch4-rpc/ch4-09-ext.md)
+  - [RPC入门](ch4-rpc/ch4-01-rpc-intro.md)
+  - [Protobuf](ch4-rpc/ch4-02-pb-intro.md)
+  - [玩转RPC](ch4-rpc/ch4-03-netrpc-hack.md)
+  - [gRPC入门](ch4-rpc/ch4-04-grpc.md)
+  - [gRPC进阶](ch4-rpc/ch4-05-grpc-hack.md)
+  - [gRPC和Protobuf扩展](ch4-rpc/ch4-06-grpc-ext.md)
+  - [pbgo: 基于Protobuf的框架](ch4-rpc/ch4-07-pbgo.md)
+  - [grpcurl工具](ch4-rpc/ch4-08-grpcurl.md)
+  - [补充说明](ch4-rpc/ch4-09-ext.md)
 - [Go和Web](ch5-web/readme.md)
-   - [Web开发简介](ch5-web/ch5-01-introduction.md)
-   - [请求路由](ch5-web/ch5-02-router.md)
-   - [中间件](ch5-web/ch5-03-middleware.md)
-   - [请求校验](ch5-web/ch5-04-validator.md)
-   - [和数据库打交道](ch5-web/ch5-05-database.md)
-   - [服务流量限制](ch5-web/ch5-06-ratelimit.md)
-   - [大型Web项目分层](ch5-web/ch5-07-layout-of-web-project.md)
-   - [接口和表驱动开发](ch5-web/ch5-08-interface-and-web.md)
-   - [灰度发布和A/B测试](ch5-web/ch5-09-gated-launch.md)
-   - [补充说明](ch5-web/ch5-10-ext.md)
+  - [Web开发简介](ch5-web/ch5-01-introduction.md)
+  - [请求路由](ch5-web/ch5-02-router.md)
+  - [中间件](ch5-web/ch5-03-middleware.md)
+  - [请求校验](ch5-web/ch5-04-validator.md)
+  - [和数据库打交道](ch5-web/ch5-05-database.md)
+  - [服务流量限制](ch5-web/ch5-06-ratelimit.md)
+  - [大型Web项目分层](ch5-web/ch5-07-layout-of-web-project.md)
+  - [接口和表驱动开发](ch5-web/ch5-08-interface-and-web.md)
+  - [灰度发布和A/B测试](ch5-web/ch5-09-gated-launch.md)
+  - [补充说明](ch5-web/ch5-10-ext.md)
 - [分布式系统](ch6-cloud/readme.md)
-   - [分布式 id 生成器](ch6-cloud/ch6-01-dist-id.md)
-   - [分布式锁](ch6-cloud/ch6-02-lock.md)
-   - [延时任务系统](ch6-cloud/ch6-03-delay-job.md)
-   - [分布式搜索引擎](ch6-cloud/ch6-04-search-engine.md)
-   - [负载均衡](ch6-cloud/ch6-05-load-balance.md)
-   - [分布式配置管理](ch6-cloud/ch6-06-config.md)
-   - [分布式爬虫](ch6-cloud/ch6-07-crawler.md)
-   - [补充说明](ch6-cloud/ch6-08-ext.md)
+  - [分布式 id 生成器](ch6-cloud/ch6-01-dist-id.md)
+  - [分布式锁](ch6-cloud/ch6-02-lock.md)
+  - [延时任务系统](ch6-cloud/ch6-03-delay-job.md)
+  - [分布式搜索引擎](ch6-cloud/ch6-04-search-engine.md)
+  - [负载均衡](ch6-cloud/ch6-05-load-balance.md)
+  - [分布式配置管理](ch6-cloud/ch6-06-config.md)
+  - [分布式爬虫](ch6-cloud/ch6-07-crawler.md)
+  - [补充说明](ch6-cloud/ch6-08-ext.md)
 - [附录](appendix/readme.md)
-   - [附录A: Go语言常见坑](appendix/appendix-a-trap.md)
-   - [附录B: 有趣的代码片段](appendix/appendix-b-gems.md)
-   - [附录C: 作者简介](appendix/appendix-c-author.md)
+  - [附录A: Go语言常见坑](appendix/appendix-a-trap.md)
+  - [附录B: 有趣的代码片段](appendix/appendix-b-gems.md)
+  - [附录C: 作者简介](appendix/appendix-c-author.md)