Correspondence thesis instructors are generally arranged by schools or training institutions. In correspondence education, students usually complete their studies through distance learning, so teachers are needed to provide academic guidance and thesis guidance. The choice of tutors is usually based on their professional background and research fields. Under normal circumstances, the school will arrange professors or scholars in related fields to serve as instructors of correspondence papers. Specific arrangements may vary from school to school or training institution. Therefore, in correspondence education, accurate instructors are directly arranged by schools or training institutions.