1. Sense of social responsibility: Modern college students generally have a high sense of social responsibility and are willing to make their own contributions to society. They think that they can help children in mountainous areas and improve their study and living conditions by teaching, so as to realize their social responsibilities.

2. Practical exercise: Teaching is an opportunity for practical exercise, which enables college students to learn, practice and grow in real life. Through teaching, college students can improve their teaching ability, communication ability and organizational ability, thus laying a good foundation for their future development.

3. Cultural exchange: Teaching can help college students get out of the comfort zone, understand and experience the cultures and lifestyles in different regions, and enhance cultural exchange and understanding, thus expanding their horizons and realms.

4. Interpersonal relationship: Teaching can help college students make new friends, establish contact and friendship with local students, teachers and residents, thus enhancing their interpersonal relationship and social skills.

5. Sense of accomplishment: Through teaching, college students can see the changes and help brought by their own efforts and efforts to mountain children, thus generating a sense of accomplishment and pride, which is also an important factor to attract college students to participate in teaching.

In a word, teaching is a meaningful and valuable activity, which can help college students realize the double promotion of self-worth and social value.