The meaning of this sentence is: we should strive to cultivate our own morality, improve our knowledge and cultivation, and surpass the average person. We should study hard, have sufficient knowledge and indomitable excellent character, and keep studying hard in order to teach students. We should try our best to establish our own image, standardize our behavior and set a good example for the world. The behavioral world model first appeared in Shi Shuo Xin Yu; Since the Song Dynasty, there have been many sayings, such as "learning as a teacher and behaving as a model" and "learning as a teacher and behaving as a model". "Learn to be a teacher and be a model" is a famous saying of Mr. Tao Xingzhi, a famous educator. "Learn from time to time and be a teacher" is a profound feeling inscribed by Professor Qi Gong, a famous educator, classical literature expert and calligrapher. Later, "Learn to be a teacher and run the world" became the motto of Beijing Normal University.