Binding method:
1. Open the login WeChat and enter the main interface of WeChat;
2. Then click the wallet-wallet option;
3. Click the Add Bank Card option in the wallet interface;
4. Enter the verification payment password according to the prompt setting, and automatically jump to the interface of adding bank card details after input;
5. Enter the cardholder and postal card number, click Next, and follow the prompts to complete the operation.