If the "Amount due for the current period" of your credit card RMB or US dollar account is a negative number, it means that there is still a deposit in the RMB or US dollar account for this period, and you do not need to make another deposit. This period's bill is only for You use it as a reconciliation reference; if there are merchant refunds, rebates, etc., the amount will be displayed as a negative value in the "Adjustment Amount of the Current Period" on the bill; if you use RMB to repay U.S. dollars, our bank will display it in the transaction summary of your U.S. dollar bill List the automatic foreign exchange purchase rate so that you can understand the amount and exchange rate of foreign exchange purchase.