"To teach students a glass of water, teachers should have a bucket of water", that is to say, teachers should have ten times and one hundred times the knowledge of students' bucket of water.

It vividly reflects people's expectation of teachers' knowledge stock and also reflects the general view of teachers' knowledge in traditional society. "Learning to be a teacher", teachers must have rich knowledge to teach students well, which is undoubtedly very correct.

Teachers can influence students' learning effect and the formation of their outlook on life and values. Stepping into the society, children will never forget the teacher's guidance, nor will they forget the scene when the teacher is reluctant to leave. There will be more and more good teachers, but the role of each teacher is irreplaceable.

The speed and quantity of expanding material knowledge updating are getting faster and faster; There are more and more ways to spread knowledge, and the spread speed is getting faster and faster. Teachers must establish the concept of lifelong learning, keep charging, keep pace with the times, and change the original "bucket of water" into "long running water". At the same time, we should change the image of "teacher" in the past and be a conscientious guide.

Teachers are the inheritors and disseminators of human culture and scientific knowledge. For students, they are also the intellectual developers and personality shapers of students. Therefore, people give people's teachers the lofty title of "Engineer of Human Soul". In the process of education, teachers play a leading role as educators, leaders and organizers in the process of students' physical and mental development. The quality of teachers' work is related to the physical and mental development level of the younger generation and the improvement of national quality, thus affecting the rise and fall of the country.