Only Ctrip can freeze the deposit. Rent a car requires a deposit. The deposit depends on different models. The pre-sale right is the deposit. Because you use a credit card, the car rental company applies to the bank to freeze your funds (deposits) for your car rental guarantee. If you use a bank card to swipe your card, it is equivalent to directly swiping a sum of money from the bank card as a deposit. Your car rental fee will be deducted when you return the car and the money will be returned to you.