1. Billing date: Determined when applying for a credit card, based on the date of birth filled in the credit card application form. If the date of birth is the 29th, 30th, or 31st, the system will randomly match 4-28 Any day on the number is the billing day.

2. Repayment date: the twentieth or twenty-sixth day after the bill date. The billing date is from the 1st to the 8th, and the repayment date is the billing day of the current month + the 20th; the billing date is from the 9th to the 28th, and the repayment date is the billing day of the following month + the 10th.