1. First of all, academic qualifications are required: the medical doctor program of Wuhan University requires higher academic qualifications, and applicants need to have a solid medical foundation and a higher academic level.

2. Secondly, the research background: applicants need to have certain research background and experience, and can prove that they have certain research potential and strength in the medical field.

3. Then there are academic achievements: applicants need to have certain academic achievements, such as publishing medical papers and participating in scientific research projects, which can prove that they have certain research ability and practical experience in the medical field.

4. Final letters of recommendation: Applicants need to provide a certain number of letters of recommendation. The referee needs to be a well-known scholar in the medical field or a person with high academic status, and has a high evaluation of the applicant's academic background and research potential.