—— 请按键盘 空白键 开始游戏 ——

Be a good ancestor. Do something a future generation will thank you for. A simple thing is to plant a tree.
The beauty of mathematics only shows itself to more patient followers.
我不是没素材了,我只是没时间了。
如果允许我们在这个世界上长生不老,试问谁愿意接受这件不吉祥的礼物?