What does the dance line mean?

The dance line must move counterclockwise around the center of the dance floor.

The dance course line of dance refers to the movement path followed when dancing on the dance floor. In order to maintain an orderly dance performance, dancers need to move in a specified direction. Usually, dancing requires dancers to make continuous development movements around the center of the dance floor in a counterclockwise direction. The purpose of this is to ensure that all dancers can dance in the same direction and avoid collision and chaos. At the same time, the counterclockwise direction also conforms to people's cognition of time flow, which makes it easier for the audience to understand and appreciate the rhythm and movement of dance.