1, Promote Alma Mater: When college students return to their alma mater in high school, they can promote their alma mater to their younger brothers and sisters, and introduce the school's characteristics, advantageous majors and teaching staff. Help more people understand the school.

2. Application Guide: College students can introduce their learning experience and major choices to their younger brothers and sisters, help them plan their future better, and guide them to apply for a suitable university or major.

3. Cultivate feelings: When college students return to their alma mater in high school, they can establish contact with their younger brothers and sisters, cultivate feelings and lay the foundation for future network accumulation. At the same time, we can also learn about the education and teaching situation of our alma mater through cold recruitment activities, and provide reference for giving back to our alma mater in the future.