Select automatic repayment. If there is no card bound to automatic exchange. When the automatic repayment is reached, a reminder will appear. If the repayment fails, the card will not be linked.
To open Bank of Communications credit card online banking, you need to bring your card and ID card and go to the counter to apply. You cannot do it yourself.
In online banking with a bank using your ID card, you can only have one account, but you can link other accounts to this account to become a sub-account, also called a subordinate account.