From the physical structure, various opinions can be roughly divided into three categories:
(1) According to the theory of "ethnic replacement", there has been one or even two ethnic replacement in the Japanese archipelago. For example, in the 1980s of 19, the cutting scientist Yoshinori Ogi believed that the aborigines living in the Japanese archipelago in the rope-grain era were Ainujin people, who were driven to the north by other ethnic groups in the mainland after the rope-grain era.
(2) The "half-blood theory" holds that the "original Japanese" (Japanese in Paleolithic Age) mixed with other nationalities who migrated from the mainland or Nanyang Islands after the rope-grain age, and gradually formed the modern Japanese. Kenji Kiyono, a medical scientist, first put forward the "half-blood theory", which remained the mainstream of academic circles until the 1930s.
(3) The "evolution theory" (or "continuum theory") holds that the Japanese in the rope-grain era gradually evolved into people in the Yayoi era, people in the ancient grave era and even modern Japanese due to changes in their lifestyles. It pays more attention to the inheritance of race, neither agrees with the theory of "race replacement" nor pays much attention to the influence of mixed blood on the composition of Japanese nation.
After World War II, Ren Yan of Hasebe and Professor Suzuki of the Anthropology Research Office of the University of Tokyo held this view, which still has an influence on the academic circles. ?
Extended data:
Japan originally had no name. In ancient Japanese mythology, the Japanese called themselves "eight continents" or "eight islands".
According to the Records of the Later Han Dynasty, Japan was called "Japan" or "Japan" in ancient China. After the reunification of Japan in the 5th century, it was named "Yamato".
In the second half of the 7th century, Japanese envoys in the Tang Dynasty renamed China "Japan" according to the title in the imperial credentials, which means "the place where the sun rises", and it has been used ever since. The Japanese have always regarded the sun as a totem.
After Sui and Tang Dynasties, Japanese began to accept China culture on a large scale. With more and more understanding of China culture, Japan is increasingly dissatisfied with the title "Japan".
According to the Biography of the New Tang Dynasty in Japan, in the first year of Xianheng (670), Japan sent envoys to the Tang Dynasty. At this point, Japan has "learned a little bit about Xia Yan, hated its name and changed its name to Japan". The messenger spoke for himself because he just came out recently and thought it was a name. "Therefore, the name China was inadvertently coined by the Sui Emperor.
Origin of Japanese culture: Archaeology and anthropology in China and Japan have confirmed many times since 1996 that the Japanese nation is mainly composed of Tungusic people in Siberia, Han people in ancient China, coastal people in southern China, a small number of Wuyue people in the lower reaches of the Yangtze River, and a small number of Malays and Indosinians in Nanyang Islands.
Reference: Baidu Encyclopedia-Japanese Culture