It is a famous saying of Mr. Cai Yuanpei that "learning can lead to civilization, and planting peaches and plums can produce the most affectionate fruits". This sentence expresses the importance and mission of teachers, as well as teachers' emotional investment in student growth and academic research. It is emphasized that teachers have a positive influence on the growth and development of students by inheriting knowledge, enlightening wisdom and cultivating morality. At the same time, it also expresses the teachers' deep friendship and painstaking feelings for students. This sentence is profound and philosophical, which has positive enlightenment significance for encouraging people to pursue knowledge, advocate academics and cultivate talents.