> 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/2020/05/13.md).

# 13

未知如暗夜，所知如提灯。 微光成一片，乃得诸相生。

![](https://385430918-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M8iFCzaIpXf8zXqpE6I%2Fuploads%2FvQIbSka2UWVMPpF5Wveb%2Fimage.png?alt=media\&token=1beaa93e-7399-4f62-9037-82712c9da0be)