On progress: "If you're competitor-focused， you have to wait until there is a competitor doing something. Being customer-focused allows you to be more pioneering."

在数学中，最简单的问题往往能引出最深刻的见解。

The most beautiful thing in the world is truth.

译文：历经千古的江山依旧存在，却再也找不到像孙权那样的英雄人物了。

人分这么几种：不认识，认识，熟人，朋友，知心朋友。朋友不在当面表白，而是背后说起朋友的时候，是否提到过你。