Suppose your card is a card and b card, and both cards cannot reflect the full amount at the same time. Suppose that the reflected amount of A is 1000, and the amount of B is also 1000. It is fully reflected on the A card and returned to the B card, because the B card is fully credited on the repayment date, which means that the B card is full and is fully cashed out and returned to the A card. A card is also credited in full as the end of repayment. In the end, regardless of the total amount owed by AB two cards, both cards have been paid off. At the end of the current accounting period, all arrears need to be returned in the next period. Please arrange funds reasonably and try to do similar operations as little as possible. The cost is relatively high and uneconomical, and it will also affect your personal credit.