Why does South Korea even have karaoke on trains?

　　On a train in South Korea, Xiaowei struck up a conversation with a strange girl in a hard seat to pass the time, and talked to her about 18 ways to make kimchi through a mobile phone translator. Go to another car with him to experience a little more fun.
　　Walking through the dark corridor and entering the door with neon lights, Xiaowei came to the middle of the train, which is a private room at the restaurant.
　　Opening the door expectantly, Xiaowei didn’t find kimchi, only a karaoke. This place, which is not as big as a bathroom, is actually a singing room! The girl I just met skillfully played a song and invited him to join, and told him that this is the most worthwhile pastime for this journey.
　　Some Koreans say that the best way to please a local is to ask him to go to karaoke. With OK.
　　Every Korean understands that only the karaoke room is their real home, even if they are boarding the train back to their hometown, they must ensure that there is a room for singing on this train.
　　According to statistics from STATISTA, South Korea, which is about the same size as Zhejiang Province, has at most 170,500 karaoke bars squeezed into a land area of ​​100,000 square kilometers. karaoke room.
　　When excess decibels gather in a narrow space, quantitative changes will lead to deformation, which can be understood by “involution” or generalized by overflow. In short, not only are there many karaokes in Korea, they are also very small, so small that they can only be called “” There is a special word called noraebang, which is not called KTV, except that the painting is more gorgeous, and the size and layout look the same as public toilets.
　　But for Koreans, as long as a record player is installed, every space less than two square meters can become their ideal vocal utopia.
　　The ever-increasing demand for singing makes karaoke cover all real estate, and the overflow can only spread to movable property, such as entering the rail transit system. In the cramped train carriages, there are computers and game consoles waiting for neighbors to come and go.
　　“It’s better to live without wine than to live without singing.” This is the truth of her hometown told me by the Korean sister who sells barbecue downstairs in the company. She also said that it reflects their optimism in a high-pressure social environment.
　　But the experience of singing K on the train made me curious, so I bought her two taels of barbecue and asked her to tell me about it. She told me that karaoke on the train has some unique advantages. The roar of the rails is more suitable for high-pitched rhythms, and even has its own drums.
　　The karaoke room on the train first entered the Korean train carriages at the end of the 20th century. Because of the small size of the country, the railway has become an important local transportation method. Koreans generally like to travel by train, and singing K on the train is a kind of icing on the cake for Koreans.
　　There are a total of five series of trains in South Korea. Most of the karaoke rooms are located in the dining car. Except for some newly opened main lines and high-speed trains, basically the older Hibiscus series have well-equipped karaoke rooms, but the price is not as high as that on the ground. It’s a little more expensive to run, 2,000 won is basically 1 yuan per minute.
　　But for the locals, they don’t mind paying such a high price once in a while for their own singing. Singing “Kilimanjaro Cheetah” on the way to Changdeok Palace to check in is a portrayal of their brotherhood.
　　Foreign tourists who have just arrived in South Korea will inevitably be attracted by such facilities on the train. The exotic talent is fully displayed in the small room. Five guys live in one room. You sing and I dance. It is the first time I feel South Korea in a foreign country. Besides the kimchi, it turns out the train is just as enthusiastic.