Why does CCB need pre-authorization to stay in a hotel with a credit card?

After the hotel makes a successful reservation, the hotel will reserve a room for you, and in order to ensure the performance of both parties, a certain amount will usually be frozen by credit card. But when you leave the hotel, the hotel will cancel this pre-authorization, or directly use the pre-authorization money to pay for the room. If your itinerary changes, you must contact the hotel in advance to cancel the reservation and cancel the pre-authorization transaction.