中国社会发展到战国时代,已经走出了传说的迷茫,有了夏商周三代的历史。春秋五霸争强,战国七雄图统,改朝换代作为社会向前发展的形式已是不争的事实,因而它的合理性就有待于理论的说明。远在殷周之际,周公就从“天命”和“人德”两方面说明武王伐纣的合理性。战国以降,邹衍又以“五德终始”给改朝换代一个命定论的诠释。孟子则干脆给做恶多端的桀、纣以“独夫民贼”的恶谥,为“汤放桀,武王伐纣”树 The development of Chinese society to the Warring States Period, has come out of the confused legend, with Xia and Shang Dynasties history. It is an indisputable fact that the Spring and Autumn Period, the Five Pawns and the Warring States, the “Seven Warlords, the Warring States Period, and the Change of the North Korea” are indisputable forms of social development. Therefore, its rationality needs to be elucidated in theory. As far away as the Yin and Zhou dynasties, Zhou Gong explained the rationality of the Warlord King from two aspects: “fate” and “morality”. In the Warring States Period, Zou Yanyan again interpreted the change of dynasties as a destiny by “five virtues of the beginning ”. Mencius simply gave vicious and vicious 桀, 纣 to “Du Fumin thief ” evil 谥, for “Tang Fang 桀, King of War King” tree