—— 请按键盘 空白键 开始游戏 ——

We are all haunted by the ghosts of our past.
In mathematics, the journey from confusion to clarity is the most rewarding experience.
记忆是一种保留你所爱之物、你所是之物、你永远不想失去之物的方式。
"The best novels are the ones that change you when you're not looking."