Are the ancestors of Japanese people Chinese?

It can only be said that the ancestors of some Japanese people are ancient Chinese. Not all Japanese are descendants of ancient Chinese.

In the 1980s, Japan used DNA technology and other archaeological and anthropological methods to conduct research on this. The composition of modern Japanese people is divided into three parts:

Native indigenous people, this part This does not refer to the Ainu minority in modern Japan. In ancient times, they crossed the sea from the present-day Altai Mountains, Mongolia and Siberia's Tunguska Valley and landed in the northern part of Honshu Island, Japan. The blood types of this part of the Japanese are mainly AB type, and the negative AB type is as high as 40. From the DNA sequencing, it is similar to that of China. The similarity of the Manchu, Oroqen, Ewenki, Hezhe, Daur and other ethnic minorities in Manchuria is 89. In terms of the time of arrival in Japan, this part is the earliest to arrive, and the earliest can be pushed back to 20,000 years ago.

The similarity between the southern maritime immigrants and the Malay and Javanese peoples in Southeast Asia and other island regions is only 32, but surprisingly it is as high as 92 with the Polynesians in Oceania. The main concentration areas are Japan's Shikoku Island and the Pacific coast area in the southeastern part of Honshu Island. It can be determined that it came from the central Pacific Ocean 10,000 years ago.

Immigration from the mainland and the peninsula is divided into two parts. One part has a 90 degree of ethnic compatibility with today’s Korean Peninsula. It can be identified as the residents of the ancient Korean Peninsula who migrated across the sea to Japan’s Kyushu Island and the western part of Honshu Island. The earliest time can be as early as 7,000 years ago. The other part has a consistency of 87% with the residents of the southeastern coast of mainland China. The earliest arrival time was roughly 2,500 years ago, roughly from the Warring States Period to the early Qin and Han Dynasties.

Based on the composition of the above three groups, native and mainland immigrants each account for about 40%, and ocean immigrants account for about 20%. From a time perspective, the local indigenous people were the earliest, followed by ocean immigrants, and immigrants from the Korean Peninsula and the southern coast of mainland China arrived last.