Square dance is the largest system in the art of dance, named for the many gatherings in the square, integrating self-indulgence and performances, with group dance as the main form of performance, and with fitness as the main purpose. Including Jiamusi dance, dam dance, sailor dance and so on. Square dance is the residents of the spontaneous fitness for the purpose of square, dam and other open space on the rhythmic dance, usually accompanied by high decibel, rhythmic music accompaniment.