—— 请按键盘 空白键 开始游戏 ——

孔子说:“有一种人,不了解情况就冒然行事,我不会这样。多听,向先进人物学习;多看,把细节牢记在心。就是掌握知识的最好方法。”
I'm not afraid to be myself.
A mathematician's work is never done; there are always new questions to ask and new mysteries to solve.