—— 请按键盘 空白键 开始游戏 ——

I know you've heard it a thousand times before. But it's true-hardwork pays off. If you want to be good, you have to practice, practice, practice.
At seventy, I’m just getting started. Watch me.
世界上充满了神奇的事物,耐心地等待着我们的感官变得更加敏锐。
The use of a program to prove the 4-color theorem will not change mathematics - it merely demonstrates that the theorem, a challenge for a century, is a finite problem.