How many nationalities are there in Japan after the 1960s?

There are 20 ethnic groups in Japan, namely: (1) Yang Ming, (2) Otaku, (3) Sakazaki, (4) Tian, (5) Xian, (6) Shenjing, (8) Feng, inferno, (8) Mazu, (3) Guang Chuan, and (3) (3) ⑼ ⑿ ⒀ ⒀ is a nation formed by China's immigration to Japan in the pre-Qin period, most of which are distributed in Ryukyu Islands, Kyushu Island and the northern shore of Seto Inland Sea; ⑹ ⒃ ⒄ is a nation formed by the ancient China Datang immigration to Japan, which is distributed in Kansai and Shikoku Island of Japan; ⑸ ⑽ ⑾ is a nation formed by ancient Korean immigrants and distributed in most parts of northern Honshu Island, Japan. ⒂ ⒅ ⒇ is the past of ethnic immigrants distributed in Northeast Asia in ancient times, distributed in Hokkaido Island and Kuril Islands today, including Mongolian immigrants; (4) It is a new ethnic group formed by the intermarriage between the harmonious ethnic group formed by China's ancient Tang immigrants and the immortal ethnic group formed by ancient Korean immigrants, which is distributed in the south-central part of Honshu Island, generally referring to Nagoya City and Aichi Prefecture (or the area west of Kanto and east of Kansai); (7) It is a new ethnic group formed by the intermarriage of harmonious ethnic groups and patriarchal ethnic groups of immigrants from Northeast Asia, living in seclusion in the hilly area in the middle of Honshu Island; The last Ainu is a new people who immigrated from the South Pacific. At present, the overall situation of its origin is unknown and controversial. In a word, the origin of the Japanese nation is diverse and complicated, and it has experienced the intermarriage of countless immigrants, and then evolved into a multi-ethnic and multicultural Japan. Therefore, Japan is a multi-ethnic country, and all China people think that there is only one Yamato nationality in Japan, which is always a mistake.