What are the main sources of college students' invention and utility model patents ()?

Inventions and creations made independently by using the knowledge learned, inventions and creations related to the major and experimental contents made in the course of experiments, inventions and creations made in the process of graduation project (thesis) research, inventions and creations made by college students applying for project approval in the process of scientific research, and college students participating in guiding teachers' scientific research projects.