The truth is often hidden in the simplest things.
The best way to learn mathematics is to do mathematics.
Quality is the lifeline of a project, we must never relax our pursuit of quality.
颠倒，永远颠倒：把情况或问题颠倒过来。倒过来看。
强大但是骄傲就会削弱力量，弱小而骄傲只会加速灭亡。
Leadership is about making the tough decisions when they matter most.