Adjustment of banking system: Banks will adjust the billing date of credit cards according to internal policies and market demand. This may be to better manage the credit card business, improve customer satisfaction, or meet specific market demand.

Customers apply for adjustment: customers can also apply to the bank to adjust the credit card bill statement. For example, if the customer's repayment ability changes, or if he wants to manage his own finances better, he will also apply to the bank for adjusting the bill.