—— 请按键盘 空白键 开始游戏 ——

The world is like a chessboard, whereon we may see a living knight, but we cannot see a living chess.
对于非礼的事,上等到的士人根本不想;对于非礼的事,中等的士人从来不说;对于非礼的事,下等的士人紧闭门户。
Sustainable agriculture requires a balance between technology and ecological preservation.