As a teacher,
teaching in shanghai you must be well-prepared for your lesson, and you must always be 100% emotionally and mentally present for students, even if you are not feeling well. However, you are likely to feel a immense sense of achievement by building rapport with students and helping them to be proficient at the target subject.
Families respect dedicated teachers. Although the unmanaged state in the past decades expose many unprofessional and unqualified foreign ESL teachers, and leave many families a rather bad impression, parents and schools nowadays are learning how to identify excellent teachers from mediocre or lousy teachers.