The BGM dancing with shaking shoulders is called coincidence because it is sung by handsome dancers. After the original MV was released in April, 20 17, it quickly became popular on YouTube, attracting many people's attention and love. This song is so popular, on the one hand, because the melody of the song itself is very dynamic, and it is easy for people to dance with the rhythm, on the other hand, because the dance movements in MV are very simple and easy to learn, which is suitable for public participation and imitation. Therefore, "Coincidence" has not only become a representative piece of shoulder-shaking dance, but also gradually become one of the songs that many people must dance at dances and parties.