Inner Palace Education is a form of women's education established by the royal family in the Western Zhou Dynasty, which mainly educates empresses, public palaces and royal servants on court etiquette and women's duties. "The Internal Rules of Zhou Li Tianguan" records that "the method of internal slaughter is to control the territory of books ... to teach nine concubines with Yin etiquette and nine emperors with the method of women's duties". The Book of Rites also records that the emperor of Zhou Dynasty married concubines, and the woman married in early March. Female teachers should teach them the four virtues of female virtue, female appearance and female merit, and sacrifice "yin objects" in water such as fish and algae to commemorate women's "yin virtue", emphasizing that "the emperor listens to men, then listens to women's obedience, and then the son of heaven manages Yang Dao." ..... external and internal harmony, national governance, this is called Shengde ". Obviously, the main purpose of harem education is to cultivate the stepmother's "yin virtue", maintain royal etiquette and stabilize the harem order.