Hello, 1. When staying in a hotel or renting a car, the merchant can withhold 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. 2. There will be no handling fee for canceling the pre-authorization at present. 3. Pre-authorization has SMS notification, and pre-authorization is completed without SMS notification. 4. Pre-authorization before formal settlement does not require repayment. Actually, please refer to the merchant settlement and the final bill amount.

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