What are the ancient books handed down from Shang Dynasty?

According to ancient books, there were four schools of thought in Shang Dynasty: Yao, Xu, Xue and Zhezong. "Yao" and "Xu" are the inheritance and development of the previous generation, and their teaching contents are richer. Because sacrificial activities and military conquest were extremely important at that time, the main learning content of the school was to learn rituals and music in sacrificial activities and techniques in military activities.