Generally speaking, Level 2 refers to N2, but I can't guarantee that it may be other exams. N2 refers to the second level of Japanese proficiency test. Because of the change of the question type, it was later called n level, which actually means level 2. Second-level zero-based application, wasting registration fees. Sign up for N4 or N5 first, and the registration fee is not cheap. It cost 5,000 yen to register in Japan and changed more than 300 RMB. In the past, the domestic exam was 350, but it seems that the price has increased recently.