Open the 12306 online ticket booking official website, select the train ticket you need, and make the reservation and purchase first.

Enter the payment interface as shown in the figure, click online payment

The pop-up You can already see the CCB icon in the window. Click on the CCB icon

Then enter the CCB account operation. Enter the account name and payment password. Note that this is the payment password. If you enter the login password, it will not be completed. Payment, and entering the wrong payment password more than three times will lock the CCB account, then you can only retrieve the payment password, and then click Next

Enter the CCB account payment page, confirm the amount and pay directly

Completed.