> 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/2020/03/06.md).

# 06

鸟虫自择日，山河有佳期。

![](/files/XN5Cqnls5Z9uZJpnMoaH)