The principle of separation is to cover with light and smoke, which is a common method of scene magic. On the stage, hiding places are everywhere, sometimes in the back or inside of the box, but with special posture and special cover materials, the audience can't find them.

If you see useful or solid props, such as cabinets, cages, etc. People are usually hidden in a dark room. If it is a curtain, a wooden board, a big paper lamp and other lighting props, it will usually be accompanied by some mysterious movements, and sometimes many people dance together to attract the attention of the audience. At this time, the model sneaked in and was finally changed. Among them, multi-person dance allows models to enter without being found. Look at the movements and dances of magicians and assistants. They look exaggerated. Generally, there are Gankun in it, which attracts attention or causes blind spots in the audience's field of vision. Sometimes the audience's attention will be paralyzed by lights, silence, etc. Even more amazing is the combination of the above methods, which of course makes it easier to hide the truth. There are also many magic tricks that use twins to perform the magic of suddenly changing a person to another place.