Will the university be expelled after being demoted twice?
No, according to the "Regulations on the Management of Students' Inquiries in Ordinary Colleges and Universities", undergraduate students are not allowed to stay in school or be demoted twice in a row during their studies at school, and the cumulative number shall not exceed twice; College students can only repeat or be demoted once during their study in school. So, you won't be fired twice, you will be fired three times.