—— 请按键盘 空白键 开始游戏 ——

In mathematics, as in life, the most profound discoveries often come from asking the simplest questions.
Literature is the bridge between cultures, a way to understand the other without judgment.
心之外没有事物,心之外没有事情,心之外没有道理。
如果农民不知道如何有效使用,最先进的技术也毫无价值。