—— 请按键盘 空白键 开始游戏 ——

数学不是沿着一条清理得很好的高速公路小心行进,而是一次进入陌生荒野的旅程,探险者常常会迷路。
We aim to build a brand with international competitiveness.
The world is full of obvious things which nobody by any chance ever observes.
What you are you do not see,what you see is your shadow,