The basic style and characteristics of China national dance, the basic characteristics and technical essentials of ballet, the classification of national dance and the names of various dances.

China national dance: refers to the styles of various ethnic minorities and dances from the people, with strong performance and little difficulty in technical movements, which is suitable for the popularization of the public, men, women and children.

The basic characteristics of ballet are summarized in three words: openness, tension and straightness; Open: refers to the outward opening of the legs, and stretch: refers to stretching the toes when all the toes leave the ground; Straight: refers to the knees straight, the movements should be extended, and the back should be straight.

Social dance: it is an international standard dance, generally belonging to sports, not literature and art. Different from Latin dance, Latin dance originated in Latin America, such as rumba and salsa.