A few days ago at 2 p.m., the Buxing Street in Yuanbao District was crowded with people. On a temporary stage built in front of the New Mart Shopping Mall, an actor was performing ventriloquism. As soon as the music stopped, the audience began to sing the famous song "Beat It" by the late pop star Michael Jackson. A man dressed in black started to dance when he heard the music. Then two or three young people followed him... After tens of seconds, more than 30 "strangers" who originally didn't know each other joined them from all directions. Everyone danced to the rhythm of the music. "Is it a commercial activity organized by the shopping mall?" People who hadn't realized what had happened discussed it. But all this only lasted for 3 minutes and then suddenly stopped. The people who were just dancing dispersed and disappeared in the crowd like they didn't know each other, leaving behind puzzled onlookers.