There is a saying in Oracle Bone Inscriptions: "Bing Zibu, many children are interested in learning, but it doesn't rain heavily?" It is said that Bingzi Ribu asked the sky: Will the children encounter heavy rain when they come back from school? There is also a record that Yi is responsible for educating members of the royal family: "Hudoi teaches the royal family." There is also "Ding Youbu, who calls himself a multi-party boy, a small minister and a precept." Its original intention is that there were "many" children in the Yin Dynasty who studied "commandments" at school. The word "Jie" in Oracle Bone Inscriptions is like a person holding Agger. "Teaching precepts" is to teach the skills of keeping alert and dancing, which belongs to military technical education and martial arts training.