1. Education requirements: Applicants must have a doctoral degree and have the ability to independently research and publish papers in related fields.

2. Age requirement: In principle, the applicant's age should not exceed 35 years old, and it may be appropriately relaxed under special circumstances.

3. Scientific research experience and achievements: Applicants must have outstanding scientific research experience and excellent academic achievements, including published international academic papers such as SCI and EI.

4. Determination of Tutor: Applicants need to determine a tutor who is willing to guide their doctoral research work in Zhengzhou University and obtain a recommendation letter from the tutor.