1. Log in to Renren official website and enter the page of creating classes. You can find the course QR code at the bottom of the page. You can also enter the class management page, select the class, and then enter the class information page. You can find the course QR code on the right side of the page.

2. Log in to Renren's mobile client, enter the class, and then enter the class information page. You can find the class QR code in the upper right corner of the page. Renren Pass is an online education management platform for educational institutions and schools, which can provide online teaching, teaching management, student management and other services to help educational institutions and schools realize digital education management.