China Merchants Bank is a commercial bank operating diversified financial services, providing QR code authentication services during the online student loan extension. Authentication QR code is a safe identification method. By scanning the QR code, the user's identity information can be verified to ensure the safety and accuracy of the operation. Using the QR code certified by China Merchants Bank, the online student loan extension operation can be completed conveniently and quickly.

To renew the online student loan by using the QR code certified by China Merchants Bank, you can follow the following steps:

1. Open China Merchants Bank official website or Mobile Banking APP and log in to the account.

2. Enter the student loan renewal page, and choose to use the certified QR code to renew the loan.

3. Find the location of the authentication QR code on the page and scan the QR code with the mobile phone camera or code scanning tool.

4. The system will automatically identify and verify your identity information, and you can continue to renew the loan after confirmation.

Using the QR code certified by China Merchants Bank to renew the online student loan is not only convenient and fast, but also can improve the safety of operation and ensure that your personal information will not be leaked. At the same time, China Merchants Bank, as a bank with good reputation and service quality, provides reliable student loan services.

I hope the above answers are helpful to you. If you have any other questions, please feel free to ask.