Learning Objective: With the development of society, many entertainment venues have appeared, KTV is an indispensable part of them, and also a place for contemporary Chinese young people to relax. Generally, people like to sing in KTV for gatherings with friends, family reunions, birthday celebrations, etc. In addition, another new form of KTV is gradually becoming popular in cities----mini KTV. Its style is more like a telephone booth, with an area of less than 2 square meters and three sides of glass. It is generally placed in shopping malls and some game cities, restaurants, cinemas, airports and other places. People pay for songs by scanning the QR code, and the price is different for different durations, which is very popular among today’s young people.