Generally speaking, when applying for a credit card, the bank will ask the cardholder to bind a bank card, usually the cardholder's salary card, so that the bank will automatically deduct money from the salary card on the repayment date. If a bank card is bound when applying for a credit card, the cardholder can log in to the card-holding bank official website, enter the personal online bank, and then find "Modify Personal Information" in the left menu bar. Click Enter and fill in the correct payment password or password to prompt the answer. After entering, you can fill in the bank card that binds you. The above is the information I have learned. I hope my answer can help the landlord!