> For the complete documentation index, see [llms.txt](https://docs.yoqi.me/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.yoqi.me/readme.md).

# 引言

This file file serves as your book's preface, a great place to describe your book's content and ideas.