You can search China's No.21set of happy dance steps, aerobics and radio gymnastics songs in the music software to find "The Sun Comes Out".

Aerobics is a group exercise, music, dance as a whole, the pursuit of human health and beauty. Therefore, aerobics has many social and cultural functions such as sports, dance, music and aesthetic education. Aerobics is a good fitness program to control the rapid weight gain after middle age.