Jazz dance. Train rocking is a rapid and dynamic rhythmic dance. It is an extroverted dance, which is consistent with the characteristics of jazz dance and belongs to jazz dance. Jazz dance is mainly a dance that pursues pleasure, liveliness and vitality. Its characteristic is that it can be danced freely. It does not have to be limited to one form and adhere to inherent postures like traditional classical ballet. With the rise of American pop culture With the development of ballet and the promotion of Broadway culture, especially the emergence of the hip-hop cultural system, jazz dance has been completely different from the previous performance forms of vests, trousers, leather shoes, and canes. After learning from the strengths of other artists, jazz dance has slowly It has slowly developed its own unique style and is no longer a free improvisational performance format. In the development trend of pop music and dance MVs in the late 20th century, the King of Pop Michael Jackson was an outstanding representative. In order to adapt to the needs of modern performances, the previous completely liberal style has gradually been restricted by the laws and requirements of various styles, turning into a style where freedom and laws coexist.