The registration number should use a card, which requires a dual-currency card and enables foreign currency payment and online payment functions. The system will try to pre-authorize the credit card to verify that the credit card still has a limit, and the cardholder may receive a pre-authorization reminder from the issuing bank. After the registration operation, you can change the card information at any time. This card is used to deduct monthly expenses or other expenses from the card when the account balance is not enough to deduct relevant funds. So when you register, you can use someone else's, but the deducted fee should be given to the other party. Of course, it is recommended to use your own card as much as possible, because this involves the problem of deduction.