According to legend, during the reign of ancient Kang Yin, people were too cold and damp to reach their bones and muscles, so a dance was created to stretch people's bones and restore their health. This kind of dance plays a role in exercising. In fact, Chinese traditional dance is closely related to Wushu. Some dances evolved directly from the development of martial arts, because there are many beautiful dances in various martial arts. For example, in Sword Dance, the artistic and beautified sword dance and the actual fencing are in the same strain. There are many such examples. It is said that the dance in Kang Yin era is an ancient fitness dance, which originated from the struggle between human beings and nature.