1. The doctoral degree of Hubei University requires students to do in-depth research in a specific field and make original contributions, which means that doctoral students need to do in-depth research in a relatively narrow field, which takes several years and a lot of efforts.

2. The doctoral research in Hubei University needs to design and implement complex research plans, including experiments, surveys and literature review. The uncertainty and challenge of research may lead to a long and difficult graduation process.