—— 请按键盘 空白键 开始游戏 ——

Mindfulness meditation can strengthen attentional control by training the brain to focus and resist distraction.
True progress happens when we balance economic growth with environmental stewardship.
"Sometimes, the hardest part isn't letting go but rather learning to start over."
In science, we try to explain what we don't understand. In mathematics, we try to understand what we can't explain.
为人宁愿正直地安贞守拙,也不可靠邪门歪道谋取赢余。
Our mission is to make the world more open and connected.
The arithmetic of modular forms is a key to understanding the deeper mysteries of number theory.