第47月第31天 markdown画图 typora

1.

```mermaid
sequenceDiagram
 participant John
 participant Alice
 
 John->>+Alice: Hello
 Alice-->>-John: Great
```

https://www.typora.io/

https://www.bilibili.com/video/BV1C7411V7SF?from=search&seid=17555936744264945728