> For the complete documentation index, see [llms.txt](https://www.oulan.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.oulan.com/2020/03/28.md).

# 28

能其小，方其大。

![](https://385430918-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M8iFCzaIpXf8zXqpE6I%2Fuploads%2FHgXD618tcADdryMWxImb%2F29861651281513_.pic.jpg?alt=media\&token=46a7b058-50bd-47b9-afb2-f72d1701a23f)