Psb visa interview

Hi. I have been a student in Beijing for 2 years. This time, when I applied to renew my entry permit, the university asked me to go to the psb for a visa interview. As far as I know, these interviews are common when someone applies for an entry permit personally. But even though the uni is applying for the visa, i have to go for the interview.
Has anyone heard of anything like this?
What do you think they will ask?