Channel Avatar

Simon_Cheng @UCvsBFqkhJ_SGxCXXbTSet2g@youtube.com

0 subscribers - no pronouns :c

Work harder，become better.

Videos Playlists
Recently Uploaded Popular Oldest
01:03
电子书籍推荐
03:09
费曼学习法
02:07
诺贝尔奖的来历