What is ventriloquism (voice simulation)?

It is the art of mimicking other sounds with the mouth, and simulating the sounds of other animals or things through the use of the throat, tongue, lips, and hands. It is a folk art that has been passed down for a long time, and is generally used for entertainment and fun. It is very common to mimic the sounds of various birds or other animals such as cats and dogs, as well as electronic music and classical ventriloquism, or even more so, to mimic the complex sounds of a scene directly with the mouth, which would be very interesting to listen to. An ancient literary text, "Ventriloquism", records the performance of a person's ventriloquism in ancient times, and very vividly describes the mastery of its technology.