Playing Mahjong is the most popular entertainment activity among Chinese people. Citizens have the right to entertain. Maybe based on this consideration and understanding, mahjong parlors are allowed to exist. In this way, people have transferred from "having some meaning" at home in the past to public day-and-night battle in mahjong parlors. There are special card shufflers to shuffle cards, and service staff to make tea and add water. They don't have to go home to cook, and can eat readily available food. That's so happy.