The DNA of the remains of Yayoi in Japan shows that they are from the mainland. Why is this happening?

Yayoi refers to primitive humans in the Yayoi era in Japan, which happened on Japanese islands around 300 AD. They replaced the previous tattooed rope people and stepped onto the stage of Japanese historical time, and they are the ancestors of contemporary human beings in Japan. To the great surprise of experts and scholars all over the world, there is no significant inheritance relationship between the Yayoi period and the rope-grain period, and the Yayoi people are also significantly different from the rope-grain people. With the development trend of scientific and technological progress, biologists have roughly sequenced the bones of Yayoi in Japan. According to the sequencing of the transcriptome of the remains of Shangjidi, the report shows that the root of the bones is an ancient legend of Hong Kong immigrants in the Asia-Pacific continent (China, North Korea and South Korea).

The historical time of Yayoi people comes from. About 10,000 years ago, after the Japanese islands were extracted from the Asian continent by the rising water level after the ice age, the development trend of Japanese islands developed into a unique traditional cultural and artistic style, which was called "rope culture and art" (famous for the decorative design of rope-patterned ceramics). The basic cultural life of rope literati depends on hunting, gathering and fishing for a living. The rope-writing era lasted until around 300 AD, and then became the Yayoi era. The change in this stage marks the emergence of farming culture, agriculture and animal husbandry, special tools of metal materials and rope writers from the Asian continent with different shapes and characteristics.

Great changes have taken place in the physical quality and morphological characteristics of Japanese groups at the end of the rope age and the beginning of the Yayoi age. The body characteristics of the Yayoi period and the following ancient grave period, historical period and even contemporary groups (excluding Ainu people in Hokkaido, Japan) are basically similar, belonging to a body group. Their brow ridges are relatively flat, their nasal bones are shallow, their faces are high and narrow, their eyes are round and high, and their bodies are relatively tall, which is similar to those of Mongolians such as Korea and China in the Asian continent. There are five basic theories about the historical and temporal evolution of Japanese ethnic groups, namely, substitution theory, double number theory, hybridization theory, persistence theory and Hong Kong immigration theory.

The theory of "substitution" holds that Japanese Neolithic scholars were replaced by other groups, resulting in today's Japanese self, which was clearly put forward in the19th century. The theory of "double figure" pays attention to the heterogeneity of physical quality and form of contemporary Japanese groups. According to the hybrid theory, today's Ainu people are mixed with ethnic groups in North Asia, and today's non-Ainu people are mixed with ethnic groups in South Asia. On the other hand, the "continuum theory" holds that the blood line from the rope literati to contemporary Japan is the same strain, and there will be no full-blooded children. The main representative of this theory is H. Suzuki.

However, none of the above basic theories can well describe the changes and differences in the physical quality of Japanese groups, especially the physical and regional differences contained in the physical quality of contemporary Japanese groups. For example, Ainu people in Hokkaido, Japan and Ryukyu people in Okinawa are not the same as most contemporary Japanese themselves, but they are similar to rope scholars. However, based on the DNA sequencing of bones and the scientific research on histology, dental sociology, blood morphology, earwax, fingerprint identification and blood composition, the "Hong Kong Immigration Theory" began to be popular in academic circles.

The origin and evolution of contemporary Japanese races. In the Paleolithic Age, some primitive tribes from Chinese mainland rushed to settle in Korea and South Korea, and some went to Japanese island to produce special tools for farming culture, agriculture and animal husbandry and metal materials from the Asian continent. At this time, due to the decrease of temperature and water level, the hunters and gatherers on the island had a bad influence, and the population of Shengwen on the island of Japan had already dropped sharply. Therefore, they easily replaced Japan's "rope age" and entered the "Yayoi age" in history (300- 250 AD). In addition, in the Iron Age, some residents of northern China entered the Japanese island according to North Korea and South Korea, and these two groups of people combined with literati, thus Japan unified the Chinese nation and formed its own civilized behavior.

It can also be said that Ainu people are more hybrids with foreign genes, while there are only a few Ainu hybrids with local genes in contemporary Japan. In short, there are dual lineages in the blood of contemporary Japanese, most of which are the genes of the Han group in mainland China, and a few are derived from the genes of the Ainu people of the Sunda type. That is to say, the Japanese group includes at least two components. One is from the southeast of the Asian continent, and this group evolved into Ainu and Ryukyu people according to the whole process of micro-evolution; The other is from the northeast of the Asian continent. The difference between these two components has gradually become significant since the yayoi period, and this difference has been preserved to contemporary Japanese groups.

The origin of Yayoi Group in Japan comes from. So far, there is no conclusion as to where the ancestors of the Yayoi people from the Asian continent originated. Specifically, experts and scholars hold different views in four directions: Lake Baikal in Western Siberia, North Korea and South Korea, and North China and South China. The magazine CellResearch, organized by Shanghai Institute of Life Sciences, China Academy of Sciences, first reported the systematic analysis of high-level genome-wide sequencing data and genotypes of more than 10,000 people in 27 provinces, autonomous regions and municipalities in China. One of the results is that Japan's own genetic genes completely overlap with the Han nationality in the northern region. In addition, biologists have compared the bones of the Yayoi people with those of ancient China residents. The materials of six groups of human bones in the yayoi period came from Bangshan Site in Nansongpu County, Nagasaki Prefecture, I) Bangbang Site in Tui County, Lipu County, Fukuoka City, Jinji Site in Hakata District, Shimonoseki City, Gupu Site in Luniao Town, Shimane County, and Shenqi County, Saga County.

12 group China ancient skull materials were unearthed in South China, North China and Northeast China, from Neolithic Age to Han Dynasty, including Tanshitoushan Formation, Panmiao Formation, Miaodigou Formation, Xuchang Formation, Guanmashan Formation, benxi formation, Pingyang Formation, Dadianzi Formation, Dadianzi U Formation, Xiajiadianding Culture and Art Combination Group, Baoan Formation and Zhazha Formation. Japanese residents in the Yayoi period were basically closer to the residents in the three northeastern provinces of China, especially in the Bronze Age of benxi formation. Among the six groups of yayoi skulls, except Gupu group, the key craniofacial features of the other five groups are often similar. However, although there are some morphological deviations between Gupu Formation and other Yayoi Formation, he has been in close physical contact with the ancient inhabitants of Guanmashan Formation excavated in three northeastern provinces of China.

This also shows that the ethnic composition of most Japanese families in the Yayoi period is likely to come from the ancient households in the three northeastern provinces of China, while the other part may come from the Weihe River basin. Interestingly, when Japanese biologists sequenced the transcriptome of Shang Sidi's remains and showed that the DNA came from the Asian continent, Japanese netizens said that if they could accept it with our ancestors, they would be unhappy with Han Tongzu.