Where does Xiu De come from?

From the Book of Rites. Universities in Ceng Zi during the Spring and Autumn Period. Self-cultivation Xiu De's order is self-cultivation first, then self-cultivation, and then Xiu De. From the Book of Rites. Universities in Ceng Zi during the Spring and Autumn Period. The original text is "the ancient desire is obviously superior to the world; Governing the country first; If you want to govern your country, you should first get your family together; If you want to keep your family together, you should trim your body first.