diff --git a/Readme.md b/Readme.md
index 2881ac7..2c869f1 100644
--- a/Readme.md
+++ b/Readme.md
@@ -41,7 +41,7 @@ Although they are so awesome, we have our own secret weapons :)
- Besides examples, we have `a lot of exercises`, you can Read, Edit and Run them ONLINE
-- Covering nearly all aspects of Rust, such as async/await, threads, sync primitives, optimizing and standard libraries etc.
+- Covering nearly all aspects of Rust, such as async/await, threads, sync primitives, optimizing, standard libraries, tool chain, data structures and algorithms etc.
- Every exercise has its own solutions
diff --git a/src/why-exercise.md b/src/why-exercise.md
index f9841be..66dbf81 100644
--- a/src/why-exercise.md
+++ b/src/why-exercise.md
@@ -1,12 +1,32 @@
-# Rust By Practice
+
+
+
Practice Rust with challenging examples, exercises and projects
+
+
-This book was designed for easily diving into Rust, and it's very easy to use: All you need to do is to make each exercise compile without ERRORS and Panics !
+[](https://github.com/sunface/rust-by-practice/stargazers) [](https://github.com/naaive/orange/network/members)
+[](https://github.com/sunface/rust-by-practice/blob/master/LICENSE)
+
-## Read online
+This book was designed for easily diving into and get skilled with Rust, and it's very easy to use: All you need to do is to make each exercise compile without ERRORS and Panics !
+
+
+## Reading online
- [English](https://practice.rs)
- [简体中文](https://zh.practice.rs)
+
+## Running locally
+
+We use [mdbook](https://rust-lang.github.io/mdBook/) building our exercises. You can run locally with below steps:
+```shell
+$ cargo install mdbook
+$ cd rust-by-practice && mdbook serve
+```
+
## Features
Part of our examples and exercises are borrowed from [Rust By Example](https://github.com/rust-lang/rust-by-example), thanks for your great works!
@@ -17,69 +37,10 @@ Although they are so awesome, we have our own secret weapons :)
- Besides examples, we have `a lot of exercises`, you can Read, Edit and Run them ONLINE
-- Covering nearly all aspects of Rust, such as async/await, threads, sync primitives, optimizing and standard libraries** etc.
+- Covering nearly all aspects of Rust, such as async/await, threads, sync primitives, optimizing, standard libraries, tool chain, data structures and algorithms etc.
- Every exercise has its own solutions
- The overall difficulties are a bit higher and from easy to super hard: easy 🌟 medium 🌟🌟 hard 🌟🌟🌟 super hard 🌟🌟🌟🌟
**What we want to do is fill in the gap between learning and getting started with real projects.**
-
-## Some of our exercises
-
-🌟🌟🌟 Tuple struct looks similar to tuples, it has added meaning the struct name provides but has no named fields. It's useful when you want give the whole tuple a name, but don't care the fields's names.
-
-```rust
-
-// fix the error and fill the blanks
-struct Color(i32, i32, i32);
-struct Point(i32, i32, i32);
-fn main() {
- let v = Point(___, ___, ___);
- check_color(v);
-}
-
-fn check_color(p: Color) {
- let (x, _, _) = p;
- assert_eq!(x, 0);
- assert_eq!(p.1, 127);
- assert_eq!(___, 255);
- }
-```
-
-🌟🌟 Within the destructuring of a single variable, both by-move and by-reference pattern bindings can be used at the same time. Doing this will result in a partial move of the variable, which means that parts of the variable will be moved while other parts stay. In such a case, the parent variable cannot be used afterwards as a whole, however the parts that are only referenced (and not moved) can still be used.
-```rust
-
-// fix errors to make it work
-#[derive(Debug)]
-struct File {
- name: String,
- data: String,
-}
-fn main() {
- let f = File {
- name: String::from("readme.md"),
- data: "Rust By Practice".to_string()
- };
-
- let _name = f.name;
-
- // ONLY modify this line
- println!("{}, {}, {:?}",f.name, f.data, f);
-}
-```
-
-🌟🌟 A match guard is an additional if condition specified after the pattern in a match arm that must also match, along with the pattern matching, for that arm to be chosen.
-```rust,editable
-
-// fill in the blank to make the code work, `split` MUST be used
-fn main() {
- let num = Some(4);
- let split = 5;
- match num {
- Some(x) __ => assert!(x < split),
- Some(x) => assert!(x >= split),
- None => (),
- }
-}
-```
diff --git a/zh-CN/src/why-exercise.md b/zh-CN/src/why-exercise.md
index 7f28e79..00a134e 100644
--- a/zh-CN/src/why-exercise.md
+++ b/zh-CN/src/why-exercise.md
@@ -1,38 +1,49 @@
-# Rust By Practice
-通过简单到困难的示例、练习及小型项目来练习和实践 Rust。
+
+
+
通过有挑战性的示例、练习题、实践项目来提升 Rust 水平，建立从入门学习到上手实战的直通桥梁
+
+
+
+[](https://github.com/sunface/rust-by-practice/stargazers) [](https://github.com/naaive/orange/network/members)
+[](https://github.com/sunface/rust-by-practice/blob/master/LICENSE)
+
+
+本书的目标是通过大量的实战练习帮助大家更好的学习和上手使用 Rust 语言。书中的练习题非常易于使用：你所需的就是在线完成练习，并让它通过编译。
+
## 在线阅读
-- [英文地址](https://practice.rs)
-- [中文地址](https://zh.practice.rs)
-
-## 为何又一个练习?
+- [https://zh.practice.rs](https://zh.practice.rs)
-[Rustlings](https://github.com/rust-lang/rustlings) 和 [Rust By Example](https://github.com/rust-lang/rust-by-example) 都是非常好的练习方式，但是我们还提供了一些独家秘笈:
+## 本地运行
-1. 更多的练习题，难度从简单到困难
+我们使用 [mdbook](https://rust-lang.github.io/mdBook/) 构建在线练习题，你也可以下载到本地运行：
+```shell
+$ cargo install mdbook
+$ cd rust-by-practice && mdbook serve
+```
-2. 覆盖面更广，除了 Rust 语言本身外，还包括了**async异步编程, 多线程, 并发原语, 性能优化和标准库等内容s**
-
-3. 通过一些小型实践项目来实践 Rust
-
-4. 支持英语和中文
+## 特性
-## 如何使用
+部分示例和习题借鉴了 [Rust By Example](https://github.com/rust-lang/rust-by-example), 书中的示例真的非常棒！
-- 大家可以在线编辑和运行所有练习
-
-- **唯一的目标就是让每一道题都编译通过，没有错误也没有 panic !**
-
-- 难度等级: 简单: 🌟 中等: 🌟🌟 困难: 🌟🌟🌟 地狱: 🌟🌟🌟🌟
+尽管它们非常优秀，我们这本书也有自己的秘密武器 :)
+- 每个章节分为三个可选部分：示例、练习和实践项目
-## 社区贡献
+- 除了示例外，我们还有大量的高质量练习题，你可以在线阅读、修改和编译它们
-我们欢迎所有类型的社区贡献，包括新的练习题、bug和文字修正等。
+- 覆盖了 Rust 语言的几乎所有方面：基础语言特性、高级语言特性、async/await 异步编程、多线程、并发原语、性能优化、工具链使用、标准库、数据结构和算法等
+- 每一道练习题都提供了解答
-## Buy me a ... 🌟?
+- 整体难度相对更高，更加贴近于实战难度: 简单 🌟 , 中等 🌟🌟 , 困难 🌟🌟🌟 , 地狱 🌟🌟🌟🌟
+
+**总之，我们想做的就是解决入门学习后，不知道该如何运用的问题，毕竟对于 Rust 来说，从学习到实战，中间还隔着数个 Go语言 的难度**
+
+## 喜欢我们精心设计的练习题吗？
对我们来说，来自读者大大的肯定比什么都重要，因此一个 [Github star](https://github.com/sunface/rust-by-practice) 要比一杯咖啡更让我们开心，而且现在它在跳楼打折，无需 998 ， 仅需 0 元钱 :)