Credit Card Consumption: When merchants who support Bank of Communications credit cards make credit card consumption, the system will automatically deduct the credit card payment from the corresponding consumption amount. For example, if you have a credit card payment of 100 yuan and spend 200 yuan, the system will automatically deduct the credit card payment of 100 yuan, and only need to pay the remaining 100 yuan.

Online payment: If merchants support online payment, they can choose to use Bank of Communications credit card to pay on the payment page, and choose to use credit card to deduct money when paying.