Reason: Among these universities, Nanjing University is definitely in the forefront of international communication and influence, while Renmin University is not in the forefront because of its strong political nature, and foreign universities are not biased towards academics and education in administration. Followed by Sun Yat-sen University, historical reasons make foreign educational institutions have special feelings for him. His educational resources are also absolutely high quality. Third, Renmin University and Nankai can be used as backup.
Mainland universities are inferior to City University of Hong Kong and Chinese University in system, management and culture. The situation of Hong Kong University is similar to that of foreign universities.
The Chinese University of Hong Kong is a federalist college. The concept of changing majors is different from that of the mainland, but the details are not clear.