Take the credit card of China Merchants Bank as an example. When staying in a hotel or renting a car, the merchant can deduct a certain amount as a deposit by swiping the card, and then swipe the card for actual settlement after the consumption is completed. This kind of transaction is generally called pre-authorization transaction. Warm reminder: 1. There is no handling fee for canceling pre-authorization at present. 2. Pre-authorization has SMS notification, and pre-authorization is completed without SMS notification. 3. No repayment is required for pre-authorization before formal settlement. Actually, please refer to the merchant settlement and the final bill amount.