The screen name suitable for teachers has connotation.

Bookmaker: This nickname implies the role of teachers in education, similar to craftsmen in traditional culture. Craftsmen make a living by craft and constantly pursue perfection. Similarly, teachers should be enthusiastic about teaching, strive for perfection, and teach every result that satisfies students.

Mr. Shuidi: The nickname "Shuidi" conveys an important quality of the teacher, which is strong permeability. In the process of education, teachers will penetrate into students' hearts like water drops, affecting their growth and development.