—— 请按键盘 空白键 开始游戏 ——

数学不知道种族或地理界限;对于数学来说,文化世界是一个国家。
Light is the most important material in architecture.
The more you learn, the more you know. The more you know, the more you forget. The more you forget, the less you know. So why bother to learn?
我画我喜欢的东西,在我喜欢的时候,在我喜欢的地方。