The steps for credit card payment using WeChat QR code are as follows:

1. Open WeChat, enter the payment page, and select the goods or services that need to be paid.

2. On the payment page, select "Other payment methods".

3. In the pop-up options, select "Bank Card Payment".

4. After entering the bank card payment page, select "Credit Card Payment".

5. On the credit card payment page, enter the credit card number, validity period, CVN and other information.

6. After confirming the payment amount and payment method, click the "Pay" button.

7. Enter the payment page of the third-party payment platform, confirm the payment information and enter the payment password.

8. After the payment is successful, the page will display a prompt message indicating that the payment is successful.