Generally, TOEFL scores are required for admission to public universities in China, which is actually a reference. The key depends on your score and Japanese level. If you get a high TOEFL score when you enter school, you can directly exchange credits for English courses without learning English.

After going to college, generally only freshmen are required. If you want to improve your English, you must rely on self-study. By the way, if you are a graduate student, you need TOEFL or TOEFL scores.