> 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/2025/07/21.md).

# 21

<figure><img src="/files/R9SJSZvJwQCKKV9M18PC" alt=""><figcaption></figcaption></figure>

小路积水枝纵横\
风云拟状战当空\
雨珠横飞似当日\
时光太匆匆

烟气留连似蒸腾\
树摇山定作怯声\
人行独自炼心胆\
且忆且思且行