—— 请按键盘 空白键 开始游戏 ——

The best way to predict the future is to create it.
Sustainability isn't an option - it's our responsibility to the next generation.
The key to success is to focus on the fundamentals and execute them flawlessly.
每个数学问题都有解决方案,但并非每个解决方案都显而易见。