And Wei are both Cantonese. International standard dance, referred to as national standard dance, comes from folk dances in various countries. Ballroom dancing is very strict about the dance style and steps. The requirements of ballroom dancing are relatively low. Ballroom dancing is different from ballroom dancing. It keeps the style of ballroom dancing, but it is more casual. Nevertheless, ballroom dancing still has its own requirements, which should reflect the styles of various dances and be free and easy. According to technical structure, it can be divided into modern dance and Latin dance.