If you have participated in some projects or competitions in college, you can write directly. If not, we should focus on our own scientific research potential.
Scientific research potential means that you already have the foundation to do academic research, such as literature retrieval, literature review, paper writing, autonomous learning, problem-solving ability and so on.
There are few high-level papers published in the undergraduate stage, so it is good to reflect the scientific research potential in the second interview. Think about whether you have helped teachers find information, whether you have participated in one or two projects of campus activities or social practice, what problems you have encountered in the process of participating in these activities, how to solve them, what methods you have used, what feelings you have and so on.