Please log in to the credit card homepage, click "Online Banking Login" on the right, enter your ID number, query password and additional code to log in to online banking, and in "Online Payment" - "Online Payment Function Application", Select "Application" for the card that needs to activate the online payment function, and you can activate the online payment function. You can make online payments on domestic websites, and it will take effect immediately after activation. There are no additional fees for activating the function, and you can enjoy the interest-free period when swiping your card as mentioned above. Warm reminder: If you have multiple credit cards under your name, each credit card needs to activate the online payment function separately. For OneNet Professional payment, fast (dedicated line) payment and online payment on overseas websites, there is no need to activate the online payment function. If it is a mobile client, log in to credit card mobile banking and enter "Online Payment" → "Online Payment Function Application".