Update README_zh.md

Author: huhuhang

README_zh.md

@@ -14,21 +14,21 @@ React 是一款知名的用户界面构建库。本技能树为你提供了系
 
 |   序号 | 名称                                                                                                                      | 难度   | 练习                                                                                               |
 |--------|---------------------------------------------------------------------------------------------------------------------------|--------|----------------------------------------------------------------------------------------------------|
-|     01 | [使用 React 创建一个笔记应用](https://labex.io/zh/courses/project-create-a-notes-app-using-react)                         | ★☆☆    | [🚀 开始实验](https://labex.io/zh/courses/project-create-a-notes-app-using-react)                  |
-|     02 | [使用 React 构建圣诞愿望清单生成器](https://labex.io/zh/courses/project-building-a-christmas-wish-list-builder-in-react)  | ★★☆    | [🚀 开始实验](https://labex.io/zh/courses/project-building-a-christmas-wish-list-builder-in-react) |
-|     03 | [构建一个 React 拖放拼图游戏](https://labex.io/zh/courses/project-building-a-react-drag-and-drop-puzzle-game)             | ★☆☆    | [🚀 开始实验](https://labex.io/zh/courses/project-building-a-react-drag-and-drop-puzzle-game)      |
-|     04 | [构建一个 React GitHub 热力图贡献日历](https://labex.io/zh/courses/project-building-a-react-github-heatmap-contributions) | ★★☆    | [🚀 开始实验](https://labex.io/zh/courses/project-building-a-react-github-heatmap-contributions)   |
-|     05 | [使用自定义 React Hook 实现响应式导航](https://labex.io/zh/courses/project-browser-window-size)                           | ★★☆    | [🚀 开始实验](https://labex.io/zh/courses/project-browser-window-size)                             |
-|     06 | [React 主题切换应用](https://labex.io/zh/courses/project-change-page-theme)                                               | ★★☆    | [🚀 开始实验](https://labex.io/zh/courses/project-change-page-theme)                               |
-|     07 | [React 颜色过滤器应用](https://labex.io/zh/courses/project-colour-filter)                                                 | ★★☆    | [🚀 开始实验](https://labex.io/zh/courses/project-colour-filter)                                   |
-|     08 | [实现 React 导航功能](https://labex.io/zh/courses/project-navigation-features)                                            | ★★☆    | [🚀 开始实验](https://labex.io/zh/courses/project-navigation-features)                             |
-|     09 | [使用 React 创建响应式名片](https://labex.io/zh/courses/project-personal-card-generator)                                  | ★★☆    | [🚀 开始实验](https://labex.io/zh/courses/project-personal-card-generator)                         |
-|     10 | [构建交互式 React 组件](https://labex.io/zh/courses/project-show-and-hide)                                                | ★☆☆    | [🚀 开始实验](https://labex.io/zh/courses/project-show-and-hide)                                   |
-|     11 | [切换明暗模式](https://labex.io/zh/courses/project-switch-between-light-and-dark)                                         | ★☆☆    | [🚀 开始实验](https://labex.io/zh/courses/project-switch-between-light-and-dark)                   |
+|     01 | [使用 React 创建一个笔记应用](https://labex.io/zh/courses/project-create-a-notes-app-using-react)                         | 初级   | [🚀 开始实验](https://labex.io/zh/courses/project-create-a-notes-app-using-react)                  |
+|     02 | [使用 React 构建圣诞愿望清单生成器](https://labex.io/zh/courses/project-building-a-christmas-wish-list-builder-in-react)  | 中级   | [🚀 开始实验](https://labex.io/zh/courses/project-building-a-christmas-wish-list-builder-in-react) |
+|     03 | [构建一个 React 拖放拼图游戏](https://labex.io/zh/courses/project-building-a-react-drag-and-drop-puzzle-game)             | 初级   | [🚀 开始实验](https://labex.io/zh/courses/project-building-a-react-drag-and-drop-puzzle-game)      |
+|     04 | [构建一个 React GitHub 热力图贡献日历](https://labex.io/zh/courses/project-building-a-react-github-heatmap-contributions) | 中级   | [🚀 开始实验](https://labex.io/zh/courses/project-building-a-react-github-heatmap-contributions)   |
+|     05 | [使用自定义 React Hook 实现响应式导航](https://labex.io/zh/courses/project-browser-window-size)                           | 中级   | [🚀 开始实验](https://labex.io/zh/courses/project-browser-window-size)                             |
+|     06 | [React 主题切换应用](https://labex.io/zh/courses/project-change-page-theme)                                               | 中级   | [🚀 开始实验](https://labex.io/zh/courses/project-change-page-theme)                               |
+|     07 | [React 颜色过滤器应用](https://labex.io/zh/courses/project-colour-filter)                                                 | 中级   | [🚀 开始实验](https://labex.io/zh/courses/project-colour-filter)                                   |
+|     08 | [实现 React 导航功能](https://labex.io/zh/courses/project-navigation-features)                                            | 中级   | [🚀 开始实验](https://labex.io/zh/courses/project-navigation-features)                             |
+|     09 | [使用 React 创建响应式名片](https://labex.io/zh/courses/project-personal-card-generator)                                  | 中级   | [🚀 开始实验](https://labex.io/zh/courses/project-personal-card-generator)                         |
+|     10 | [构建交互式 React 组件](https://labex.io/zh/courses/project-show-and-hide)                                                | 初级   | [🚀 开始实验](https://labex.io/zh/courses/project-show-and-hide)                                   |
+|     11 | [切换明暗模式](https://labex.io/zh/courses/project-switch-between-light-and-dark)                                         | 初级   | [🚀 开始实验](https://labex.io/zh/courses/project-switch-between-light-and-dark)                   |
 
 ## 更多
 
 - 🔗 [React 了解更多](https://labex.io/zh/skilltrees/react)
-- 🔗 [Awesome Programming Projects](https://github.com/labex-labs/awesome-programming-projects)
-- 🔗 [Awesome Programming Courses](https://github.com/labex-labs/awesome-programming-courses)
+- 🔗 [精选编程项目](https://github.com/labex-labs/awesome-programming-projects)
+- 🔗 [精选编程课程](https://github.com/labex-labs/awesome-programming-courses)