Who can tell me the specific process of hotel opening?

Just take one of their ID cards.

1 ID card

Just open a single room. The single bed is quite big, and two people can squeeze together (there are also hourly rooms, and the double room is a double bed by the clock).

Register and pay the deposit. Then the waiter will give you the key and receipt. Remember to keep it safe and use it when you check out.

Take the bill and refund the deposit the next day. Remember not to use things in the hotel, they are expensive. ....