wechat will use wechat to select the bank of communications credit card for payment, and AliPay will use AliPay to select the bank of communications credit card for payment, and the payment amount can be greater than the credit card payment. After two days of transactions, the credit card payment will be reflected in the bill.

after each credit card consumption, the bank will directly deduct the amount generated by this credit card consumption according to the balance of the credit card payment in the account, and return the deducted amount to the credit card account. Moreover, if there are multiple credit card payments in the credit card account at the same time, the system will automatically deduct them first according to the validity period, and multiple credit card payments can be deducted together in the same credit card consumption.

Bank of Communications' cash-back activity is a continuous cash-back activity for consumption, which is mostly points. Occasionally, there are credit cards with different denominations, and there are some coupons on holidays. Credit card payment is a kind of voucher, which can only be used for repayment and not for shopping, but it is similar in nature, and it is all deducted from cash. Credit card payment is mainly obtained by credit card lottery, participation in activities or other ways stipulated by the bank.