Last month, my Ping An credit card was overdue. Why do I get a reminder message when I pay back the money?

I suggest you call the bank to confirm how much money you owe. If you don't owe it, that's fine. If you still owe money, pay it back quickly. Generally, if you think you have paid it all back, you won't owe too much. Many people are like this, and the more they owe, the more they owe.

Off-topic, those who generally have little money or are unwilling to pay interest will choose to pay in full before the final repayment date of the bill. This way, you can enjoy the interest-free period ranging from 20 days to 60 days given by the bank. In addition to this repayment method, all other repayment methods have to pay full interest. Credit card interest is a bit high, and it is compound interest.

Thank you for your questions.