The difficulty of Japanese as a second foreign language in postgraduate entrance examination corresponds to the level of Japanese around n2. The number of words you need to master is around 3000, so it is relatively easy to learn Japanese as a second foreign language.
Generally speaking, there are several foreign language choices for postgraduate entrance examination, such as English 20 1, Russian 202 and Japanese 203. Generally speaking, there are relatively more people taking the postgraduate entrance examination to learn Japanese as a second foreign language, and it is relatively easy for China people to learn Japanese at first.