Some transactions require an advance payment. For example, after booking a room successfully through a hotel, the hotel will generally freeze a certain amount of money through a credit card in order to keep the room and not provide it to others. This is an advance payment, which the bank calls pre-authorization.

When you leave the hotel, you should inform the hotel to cancel this pre-authorization or pay the house price directly with the pre-authorization If the authorization is revoked, the transaction will not be shown in the bill. Previously frozen quotas will not be recorded, but will be released directly after being revoked. If the house payment is made through the pre-authorization, it will be recorded according to the actual house payment, and the freezing authorization will be automatically cancelled. What you can see on the bill is the actual room rate. If you forget to notify the merchant to cancel the authorization, it will be cancelled automatically after a period of freezing, and it will be cancelled automatically after the pre-authorization of overseas authorized transactions 15 days.

Overseas transactions are swiped through the UnionPay line and only need to be repaid in RMB; If you swipe your card through an international organization bank and the amount credited is USD (or EUR), you need to directly repay USD (or EUR) or deposit enough RMB to repay the purchase of foreign exchange. If you use CCB credit card with global RMB settlement function to pay, no matter which route the transaction takes, it will be automatically transferred out of RMB.