Conclusion: After the credit card bill is due, cardholders usually have an interest-free repayment period of 20-50 days to ensure that the repayment is completed within this period. The following are several common repayment methods:

1. Online bank transfer: By logging into personal online banking and using a debit card, credit card or savings account to transfer funds, the operation is simple and fast.

2. Mobile banking transfer: Mobile banking has equally powerful functions. Transfers and repayments can be completed anytime and anywhere, and it is very flexible.

3. Self-service terminal repayment: On self-service equipment such as CDM or ATM, transfer or cash repayment can be made, providing cardholders with a variety of choices.

4. Counter repayment: go directly to the bank counter and repay in cash or by transfer from a debit card or other account to ensure clear accounting.

Regarding automatic transfer repayment, please note:

-Make sure that the bound savings card is in normal condition and has sufficient amount on the repayment date, otherwise the automatic deduction may not be possible.

-By default, automatic repayment is usually full repayment. If you need to repay according to the minimum repayment amount, you need to inform the bank in advance to change the repayment settings.

- Even if the minimum repayment is completed, interest will still accrue on the bill, affecting the overall repayment cost.

The above information comes from the official guide of Bank of China and explanations of common credit card terms for reference. It’s important to plan ahead of the repayment date to avoid the additional fees and impact on your credit history caused by overdue payments.