1. The competition is fierce: Sun Yat-sen University is a comprehensive university with complete disciplines. At the same time, it is one of the key universities in China, with good teaching resources and teachers, so it is very popular with candidates. There are many applicants every year, and the competition is fierce.

2. Higher score line: In order to select outstanding talents, Sun Yat-sen University set a higher score line when enrolling students. This requires not only excellent performance of candidates, but also outstanding comprehensive quality of candidates.

3. The examination is difficult: the examination questions of Sun Yat-sen University are difficult, which requires high academic ability and comprehensive quality of candidates. Candidates need to fully grasp the knowledge points and have the ability to use knowledge flexibly.