1. Major: There are many majors in Qiushi class of Zhejiang University, such as applied mathematics, physics, chemistry and biological sciences. There are many choices, but few majors in mixed classes, only computers and psychology, and few choices.

2. Teachers' strength: The Qiushi class of Zhu Yuan of Zhejiang University has 9 senior teachers, which is strong, while the mixed class has only 5 senior teachers, which is small and stronger than Qiushi class.