generally speaking, you don't need a credit card guarantee to book a hotel on Ctrip. If you don't show, your points will be deducted. If the property is tight or the hotel has special requirements, you need a credit card guarantee. Credit cards can support the deduction without card authorization, but debit cards are not allowed. Therefore, if you need to guarantee the reservation, you must use a credit card, because when you don't show, the hotel will ask Ctrip for money, and Ctrip will deduct your default room rate through the authorization without card.