# 20

如丝般顺滑\
风都写不出来的歌谣\
轻拂过没有修饰过的脸颊\
一道光穿过一缕纱\
一道沙岗一片绿洲是天下\
一颗梦响起惊雷\
一粒沙是一句话

![](/files/l3LwmZh6CPUYRndVjnou)


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://www.oulan.com/2023/03/20.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
