Flashmob is a group of people who meet at a designated time and place through the Internet or SMS, and then make certain actions (such as clapping their hands and shouting slogans). , generally not illegal but noticeable), and then disappear as if nothing had happened in a short time. This kind of behavior is called "flash action", which can be regarded as a short-term performance art. Its main characteristics are that only the initiator has no organizer, and the members are disciplined and basically do not know each other. People engaged in flash mob activities are also called "smart mobs", "flash mob" and "action gangs".
Flash is divided into "flash action" or "flash film". "Flash behavior" refers to a short-lived ground performance art, or recorded by simple shooting. "Flash film" refers to professional songs, dances and movies, mainly based on the spread effect of movies on the Internet. It is difficult to shoot, and it will be repeated many times to achieve the film effect. It has a wide spread and is mostly combined with public welfare or business.