1. Roger that. That's what we usually call a cheat sheet, where several people or even more people enter the examination room. They take the exam as normal candidates, write down different topics on the admission ticket through a clear division of labor, and even take them out of the examination room by brain memory.
2. sneak shots. At this stage, with the development of science and technology, it has become possible to take candid photos by means of science and technology, and one person can complete the task. Of course, for safety reasons, more people can be arranged. There are also many devices for taking candid photos, such as glasses, watches, pens, erasers and buttons. Can be disguised as a sneak shot. Usually, the sneak shots of watches and glasses are the two most common and most produced sneak shots.