Add comprehensive multi-language documentation guide

README.md

@@ -1,7 +1,67 @@
 # docs
 
+A multi-language documentation site built with Fumadocs, supporting English and Chinese.
+
+## Features
+
+- 🌍 **Multi-language Support**: Full internationalization with English (en) and Chinese (zh-CN)
+- 📝 **MDX Content**: Write documentation using MDX for interactive content
+- 🔍 **Fast Search**: Quick search across all documentation
+- 🎨 **Modern UI**: Beautiful and responsive design with Fumadocs UI
+- 📱 **Mobile Friendly**: Fully responsive on all devices
+
+## Getting Started
+
+### Installation
+
+```bash
+npm install
+```
+
+### Development
+
+```bash
+npm run dev
+```
+
+Visit `http://localhost:3000` to view the documentation site.
+
+### Build
+
+```bash
+npm run build
+```
+
+### Production
+
+```bash
+npm start
+```
+
+## Building Multi-language Documentation
+
+For a comprehensive guide on how to build and maintain multi-language documentation, see the [Multi-language Documentation Guide](content/docs/i18n-guide.en.mdx) available in the documentation:
+
+- English: `/en/docs/i18n-guide`
+- Chinese: `/zh-CN/docs/i18n-guide`
+
+The guide covers:
+- Configuration setup
+- Creating multi-language content
+- File naming conventions
+- Adding new languages
+- Troubleshooting common issues
+
 ## Configuration Notes
 
 ### Internationalization (i18n)
 
-The default language is configured in `lib/i18n.ts` as `en`. If you change the default language, you must also update the redirect destination in `vercel.json` to match (currently `/en/docs`).
+The default language is configured in `lib/i18n.ts` as `en`. If you change the default language, you must also update the redirect destination in `vercel.json` to match (currently `/en/docs`).
+
+### Content Structure
+
+Content files are located in `content/docs/` and use language suffixes:
+- `{filename}.en.mdx` - English content
+- `{filename}.zh-CN.mdx` - Chinese content
+- `meta.en.json` - English navigation
+- `meta.zh-CN.json` - Chinese navigation