—— 请按键盘 空白键 开始游戏 ——

The essence of mathematics lies in its ability to reveal hidden patterns and structures in the universe.
不了解人的缺点,不了解人的优点,不了解人优点中的缺点,不了解人缺点中的优点,就不可以随便用人,不可以随便教人。
Innovation is not a slogan, but the actual action of every day.
History remembers those who fight for freedom.