—— 请按键盘 空白键 开始游戏 ——

Every building is built for a specific purpose in a specific place for a specific society.
世界上最好和最美的东西是看不见甚至摸不着的——它们必须用心去感受。
I have already carried out my duty. I have proved the Poincaré conjecture and I have nothing more to do in mathematics.