Most of the Japanese territory live in Japanese people with significant Northeast Asia , while in Hokkaido , there are Ainu people with great differences in appearance characteristics. What causes this?
Northeast Asians with distinctive characteristics
Ainu
In the Japanese mythological history, Japan's origin is: in the left eye of the creator "Izanagi", the sun goddess " Tianzhao " (Amaterasu), she sent her grandson "Ninigi" to the land of Kyushu, Japan and married a land god. Their great-grandson, Jimmu, defeated the enemy with the help of a dazzling divine bird and became the first emperor of Japan, namely the Emperor of Shenwu in 660 BC. In order to fill the gap between 660 BC and the earliest Japanese monarchs recorded in historical records, the Japanese created 13 equally fictional emperors.
In fact, during the glacier period, Hokkaido, the northernmost end of Japan, was connected to the Russian continent through a land bridge via today's Sakhalin Island , while Kyushu Island, the southernmost end of Japan, was connected to South Korea via today's Tsubasa Strait , and through another land bridge. All the major islands in Japan are connected to each other, and most of the waters of today's Yellow Sea and East China Sea were once the land extension belt of mainland China.
Therefore, there are currently four conflicting theories that try to illustrate the origin of modern Japanese:
1. The Japanese are descendants of Central Asian nomadic riders who traveled through Korea to conquer Japan in the 4th century AD, but they are by no means Koreans, that is, traveling through scripts.
2. Before 20,000 BC, humans occupied Japan during the ancient ice age and gradually evolved into Japanese, i.e., local scripts.
3. The Japanese were immigrant descendants from North Korea with rice technology around 400 BC, namely immigration scripts.
4. The nations mentioned in the other three theories have produced modern Japanese nations in fusion, namely the fusion script.
According to archaeological records, ancient people living in Japan after the end of the glacier period invented pottery and could eat cooked food. This brought about the first big explosion of the population. It is estimated that Japan's population has grown from about a few thousand to 250,000, and Japanese history has entered the Jomon era that lasted about ten thousand years.
Around 400 BC, immigrants from South Korea brought mature rice technology, triggering a second population explosion, and Japanese history entered the Yayoi era that lasted for about 700 years. With the completion of Japan's first chronicle of semi-mythology and semi-real events in 712 AD, Japan finally entered the exact history.
The changes that Japanese culture experienced during the 700 years of the Yayoi era were much more drastic than the 10,000 years of the Jomon era, and it was this era that created the modern Japanese. So what is the reason?
The first theory is the local script mentioned in the previous article, which is very popular in Japan;
The second theory is the immigration script mentioned in the previous article, which is very unpopular in Japan, as if it has no roots;
The third theory is the fusion script mentioned in the previous article.
By comparing similar changes in other parts of the world and comparing DNA of modern Japanese and original Japanese and immigrants, the third theory may be more realistic.
Now we can see that archaeology, human physiology, and genetics all support this view. That is, the Ainu people are descendants of the Japanese indigenous peoples, while the Japanese people are the more recent descendants of immigrants.
The above content mainly comes from Diamond's "Guns, Bacteria and Steel" (revised version), and is also my reading notes today.
