The doctrine is unchanging
Mingjiao remains unchanged. Chinese idioms, Pinyin is m í ngji à ob à Bi à n, which means that the order is clear, so that the people can adapt to it, so that there will be no disorder. It comes from Shang Jun Shu, reward and punishment.
The source of the idiom is Shang Jun Shu. Reward and punishment: "the husband does not pay for the reward, the punishment does not kill, the education does not change, and the people know the affairs of the people, so the country is no different."
The doctrine is unchanging
Changing the past and changing the customs - biàn gǔ yì sú