2. Performance requirements. Applicants are required to provide excellent undergraduate and master's transcripts, and usually require the undergraduate grades to be ranked within the first 10%.
3. Language requirements. For non-native English speakers, you need to provide valid English scores, such as TOEFL (minimum 90 points) or IELTS (minimum 6.5 points).
4.GRE scores. Applicants need to provide GRE (Graduate Entrance Examination) scores, especially GRE math scores, which is very helpful for the application.
5. Letter of recommendation. Usually you need to provide three convincing letters of recommendation, which should come from the applicant's tutor, internship or work experience.
6. Personal statement. Applicants need to write a personal statement explaining their research interests, goals, motivations and future career plans.
7. Research experience. Having certain research experience, such as participating in scientific research projects and publishing academic papers, can improve the success rate of application.