—— 请按键盘 空白键 开始游戏 ——

We teach a subject not to produce little living libraries on that subject, but rather to get a student to think mathematically for himself.
天地的法则用一句话就可以概括,它自身诚一不贰,化育万物,不可测度。天地的法则是:广博,深厚,高超,精明,悠久,长远。