When you solve a mathematical problem, you don't just get the answer - you understand why it's the answer.
当你解决一个数学问题时,你不仅得到了答案,还理解了为什么这是答案。
The truth is often found in contradiction.
I don’t complain. I keep working hard and try my best in every moment.
天下很多所谓可以做的事情,未必都是可以做的啊! 
"The past is a foreign country; they do things differently there."