Why is square dancing on fire?

Active Square Dance Auntie Big Sister Big Grandpa Big Mother Big Uncle, most of them were born in the fifties and sixties, and now they are older, they want to recall the flavor of the dance of the word Zhongzhi, they want to think about the days of the group gathering like the Great Leap Forward Canteen, they want to relieve some of the hard work of bringing up their grandchildren's generation, so you are also idle and I'm idle, and you come to dance and I also dance, and so it caught fire.