> 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/2020/03/15.md).

# 15

得意时难见自己，失意时难见别人。

![](/files/8KQABnbyUfb2sDAvdn2W)