—— 请按键盘 空白键 开始游戏 ——

司马牛问君子。孔子说:“君子不忧不惧。”问:“不忧不惧,就能叫做君子吗?”孔子说:“问心无愧,何来忧惧?”
I am not interested in solving problems that are already solved.
The most sustainable product is one that lasts.