In other words, if the cardholder repays within 3 days after the due repayment date, it can still be regarded as normal repayment, which will not generate overdue interest and will not affect personal credit history. However, it should be noted that the grace period policy may be different due to the adjustment of bank policies or the different types of cardholders' cards. It is recommended that you consult the official channels of Shanghai Pudong Development Bank to confirm the current grace period policy or consult the relevant terms of the credit card agreement when using it. Repayment within the grace period should also be guaranteed in full to avoid incomplete repayment.