zhangyaocheng

内容很不错，但是只能在线阅读，能否提供一个pdf版本呢？在gitbook中提供pdf版本会更加方便一些呢。多谢大佬

## Issue Description Type: *question* ### Describe what happened (or what feature you want) can not open https://chaosblade-io.gitbook.io/chaosblade-help-zh-cn/. Is this doc continue useful?