1 Open the "WeChat" program, switch to the "Me" tab, and click the "Expression Store" item to enter. 2 Then click the payment item on the right side of any expression to enter the payment interface. 3 After clicking the "Pay" button, you will automatically go to the "Add Bank Card" interface, enter the "Card Number" of the bank here, and click "Next". Then enter the relevant information of the bank card and click "Next". Then the mobile phone will receive a verification message, get the verification code from it and enter it, and click "Next". Next, we need to set the payment password information. After the input is completed, the binding between WeChat and account information is completed. You can use this service to realize the function of online payment in the future.