Not too easy. Not too difficult.
Jin assigns archaic and difficult homework that has no relevance to exams.
Also, he is often rude to students if they ask a question he doesn't approve of, which is unprofessional and petty.
Hours per week:
Advice for students:
Fortunately his exams are fair and he is a generous grader. He usually explains concepts clearly. His major issue is his attitude when answering questions.