Credit card prepayment means freezing part of the credit limit first, and then clearing and deducting the money with the bank after the transaction is successful. Mostly used for hotel reservations, car rentals and online payments. When you buy a gift card on Amazon and pay with a CCB credit card, the bank first freezes part of your credit limit. After the merchant confirms that the transaction is successful, it will settle with the bank and deduct the money. After that, you will also receive a reminder that the prepayment was successful. Short message. Generally, after the advance payment, the transaction will be deducted directly if the transaction is successful. If you only pay a deposit, such as staying in a hotel or renting a car, you need to pay a certain amount as a deposit in advance. After the transaction is completed, you will either deduct the money from the advance payment or pay additionally. , and then cancel the advance payment. If the merchant does not cancel it, it will be automatically canceled after 30 days for domestic transactions and 15 days for overseas transactions. Please pay attention to the subsequent bill details and credit limit.