The founder of dynamic square dance is Lin, 29 years old, with a dynamic screen name. She is a dance teacher of dynamic square dance in Mawei District, Fuzhou. He is also a square dance enthusiast, a square dance director and coach.

In 2009, Lin's mother wanted to learn to dance square dance, but she had no dance foundation. Can't find the right person to teach. Lin volunteered to be her mother's dance teacher. Later, several sisters who usually danced with their mothers were invited to set up the "Moving Square Dance Fitness Team". In May, 2009, Lin uploaded the first square dance of the dance team "Welcome to Wine and Sing Happy Songs", with Dongdong as the screen name and Dongdong Square Fitness Dance as the name. The video was clicked by more than 200,000 people on 56.com. Since then, Dongdong has been uploading their square dance works on the video website. Up to now, nearly 400 videos have been uploaded. Very popular with dancers all over the country.