2. Simply put: many people use the Internet or other means to do a series of designated songs, dances, or other behaviors at a designated place, at a clearly designated time, unexpectedly, and then quickly leave.
3, flash mob first originated in March 2000 in Manhattan, New York, USA. At that time, an organizer named Bill called more than 400 people, in New York Times Square, Toys R Us, pilgrimage to a mechanical dinosaur, 5 minutes after the crowd suddenly and quickly left, flash mob is therefore known.