How many ID cards does the hotel need to open a mahjong room?

In order to stay in a hotel, a person must register with his real name and a card. According to Article 6 of the Measures for the Administration of Public Security in Hotel Industry, hotels must register when they receive passengers. At the time of registration, the passenger's identity documents shall be checked and truthfully registered according to the prescribed items. To receive accommodation from overseas tourists, an accommodation registration form shall also be submitted to the local public security organ within 24 hours.

Article 70 of the Law of People's Republic of China (PRC) on Public Security Administration Punishment: Whoever provides conditions for gambling for the purpose of making profits, or participates in gambling in a large amount, shall be detained for less than 5 days or fined for less than 500 yuan; If the circumstances are serious, they shall be detained for more than 10 and less than 15, and fined for more than 3,000 yuan in 500 yuan.