知识树,笔记

[xxn]

知识树=金字塔原理+文件夹
所谓知识树，就是将你一生中所遇到的所有知识，全部分类记录下来

[Silver]

Hi there, until we have subcategories for other languages, please post in English so that others can participate without using Google Translate.

Thanks in advance!