> For the complete documentation index, see [llms.txt](https://book.likun.pm/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://book.likun.pm/di-er-zhang-ce-le-chan-pin-jing-li-de-shi-dai.md).

# 第二章：策略产品经理的时代