There are some difficulties such as strict application conditions, difficult stage assessment, high curriculum requirements and strong research ability requirements.

1, the application conditions are strict: graduate students need high GPA and GRE scores, and it is difficult to apply.

2. Stage assessment is difficult: you need to pass several rounds of assessment, such as preliminary examination, proposal defense and thesis defense, before you can continue your study.

3. High curriculum requirements: In addition to mathematics courses, you also need to study physics, computer and other related courses.

4. Strong research ability: you need to independently complete an original research and publish at least one SCI paper.