I looked at the video, they are dancing to Qing'er Square Dance's "Love the world only you". I am uploading this dance song for you to listen to.
If it helps you solve the problem, please ask the questioner to adopt it in time. The method is: in the question you ask the question behind the word "processing", click on "processing" will show "choose to satisfy the answer, supplement the question, increase the reward, forwarding the question" and so on, please click on "choose to satisfy the answer, supplement the question, increase the reward, forwarding the question. Please click on the "Select as a satisfactory answer" button to determine the satisfactory answer.