First, 1-4 volumes of Japanese were newly compiled by Shanghai Foreign Language Education Press, and then 5-6 volumes of Japanese comprehensive course were published by Shanghai Foreign Language Education Press.

There are also oral classes, Japanese-Chinese translation classes and so on.

Personally, I don't think it is suitable for self-study in new Japanese, because it is difficult, too old and the language is constantly changing.

Recommended standard Japanese is generally used by other majors to learn a second foreign language.