Teacher's kindness is an emotion and students' gratitude for the education and guidance given by the teacher. Show respect, gratitude and nostalgia for teachers. A mentor refers to a person who enlightens people ideologically and gives concrete help at an important stage of life development. Simply put, a teacher is a person who gives help and guidance in education or life.

To sum up, the kindness of the teacher is the gratitude of the students to the teacher, and the teacher is the person who gives the teacher help and guidance.