1, Hohai University, Hohai University is a well-known research university of water conservancy engineering and environmental science in China, with abundant teachers and perfect teaching facilities. The second preparatory class covers many subjects such as literature, science, engineering, management and law.

2. Nanjing University of Information Science & Technology and Nanjing University of Information Science & Technology are universities characterized by information technology. Their two preparatory classes focus on cultivating talents in computer science, electronic information and other fields, cultivating students' basic computer knowledge and laying a solid foundation for future professional study.

East China Jiaotong University is a comprehensive research university with a long history. Its two preparatory classes emphasize the teaching of professional knowledge and the cultivation of practical ability, so that students can gradually adapt to and master the skills of university study and life.

4. South China University of Technology: South China University of Technology is a university with engineering as its main feature. Its two preparatory classes not only cultivate students' engineering professional knowledge, but also pay attention to the cultivation of students' oral English and listening and speaking ability, so as to improve their comprehensive quality.

5. Shanxi University: Shanxi University is a comprehensive university with complete disciplines, including philosophy, economy, law, education, literature, history, science, engineering, management, medicine, art and other fields. Secondly, the preparatory classes are diversified, covering many disciplines such as literature, science, engineering, management and law. The above are the recommendations of two good universities in the preparatory class.