What if I can't choose the course of Nanjing University?

Check the network connection, wait a moment and ask for help.

1. Check the network connection: make sure the device is connected to the campus network normally.

2. Wait for a period of time: the course selection system will be delayed or collapsed when there is high demand, especially during the peak period of course selection. You can try again later.

3. Ask for help: Ask teachers, counselors or classmates for help, and ask if they have encountered similar problems, or if there are any solutions.