—— 请按键盘 空白键 开始游戏 ——

The truth about a person is often hidden in the gaps between what they say and what they do.
The essence of mathematics is not just in solving problems but in asking the right questions.
"The greatest glory in living lies not in never falling, but in rising every time we fall."
生活很艰难,亲爱的,但你也很坚强。