2. Call the mentor's mentor. The more respectful address is "surname"+"position" or "title". For example, the tutor's surname is Zhang and his position is Dean. You can call him. For example, the tutor's surname is Li, and his position is principal. You can call him President Li. For example, the tutor's surname is Zhao, and he is a professor. He can be called Professor Zhao.
Tutor: a teacher or researcher in an institution of higher learning or research who guides others to study, further their studies or write academic papers. For example: graduate tutor.
Salutation:
Address refers to the address forms that people use in daily communication and entertainment.
In interpersonal communication, choosing the correct and appropriate address reflects one's upbringing, the degree of respect for the other party, and even the development of the relationship between the two sides and social fashion, so it can't be used casually.