You don't need to add it specially. As long as the ID number when you buy insurance is the same as the number when you register your account, it will be automatically associated after you log in to your account. Adding a bank card is just a function that is convenient for customers to manage settings. If you want to change the payment account number of the policy, you can click Enter in the policy module. After finding the policy, you can enter the interface of changing account number in the policy permission.