After the professional payment function is turned on, the payment process is as follows: you select the items to be "purchased" on the merchant's webpage, and then there will be a link asking you to choose a bank to pay. After selecting China Merchants Bank, you will be linked to an interface that allows you to choose the payment method. China Merchants Bank provides three payment methods: professional payment, card number password payment and mobile phone payment. You can choose professional payment. Note: Do not log in to Professional Edition before payment.