What's the matter with "crossing the south with the crown"? How many times in history have there been "crossing the south through the crown" incidents?

Do you know what "Yi Guan Nan Du" is? It doesn't matter if I don't know, I'll tell you.

According to historical records, due to the war in the north, the Central Plains made three large-scale trips to the south, namely, Yongjia South at the end of Jin Dynasty, Huang Chao Rebellion in Anshi, and the difficult trip to Jingkang. These three great immigrants, a large number of people from the Central Plains moved to the south, which made China's economic center move from the Central Plains to the south. Therefore, historians believe that at present, southern talents are the most authentic people in the ancient Central Plains, and southern dialects such as Cantonese and Minnan are the official languages of the ancient Central Plains in various periods.

Photo: Crossing the South through the Yiguan

But there is a very strange phenomenon. Although there are three times of crossing the South through the Yiguan in history, most of the original Zhongyuan people fled to the south because of the war. Then why do the descendants of the oldest surnames in China still stay in the north, especially in the Central Plains?

As we all know, there are eight ancient surnames in China: Ji, Jiang, Yi, Yi, Yi, Yao, Ai (version 2: Pregnancy). These eight surnames are the origins of almost all modern surnames, and can be called the oldest and noblest surnames. These ancient surnames were originally active in the Central Plains, so where are the descendants of these ancient surnames now?

Picture: Chinese surname

Look at Ji's surname. The surname of Ji is the surname of Huangdi, the ancestor of Chinese culture, and it was named because Huangdi in Xuanyuan was born in Jishui. Ji's surname is the surname of Zhou Dynasty, and it is also the surname of Lu, Wu, Yan and Jin. Tracing back to the source, Ji surname is almost the source of all common surnames today.

Huangdi in Xuanyuan lived about 4,6 years ago, and if we look at the distribution map of Ji's surname, we will find that although more than 4,6 years have passed, Ji's surname still lives in the Central Plains, mainly at the junction of Henan, Shanxi, Shaanxi, Hebei and Shandong provinces. The distribution of these descendants of Ji surname is not much different from the previous migrations of Ji surname recorded in historical books.

Figure: The distribution map of Ji's surname

Do you think it is strange? The Central Plains * * * crossed the south several times, and the population migrated to the south on a large scale, while the oldest surname Ji hardly moved, and the scope of activities was similar to that of 46 years ago.

In addition to Ji, the second oldest surname, Jiang, is similar. Ji is the surname of Xuanyuan Huangdi, while Jiang is the surname of Shennong Yandi, who was born in Jiang Shui and got his surname. The main activities of Emperor Yan and tribal people are in the middle and lower reaches of the Yellow River, which is also in the Central Plains, while the descendants of Jiang gradually developed into two noble families in Shandong and Gansu with the migration of enfeoffment.

Figure: Distribution of Jiang surname

Interestingly, the descendants of Yan Di's Jiang surname, like the descendants of Huang Di's Ji surname, traveled to the south several times in history, but they did not migrate to the south on a large scale, and their descendants still live in the northern Central Plains.

Then, why didn't the descendants of the oldest Ji surname and Jiang surname go to the south as everyone thought? In fact, the so-called "South Crossing through the Yiguan River", the population migration is not as much as everyone thought. In ancient China, even in the turbulent period, the population migration was not as fast as we thought. In our history books, most of the people who crossed the south were aristocratic families, and the majority of the population were ordinary people. It was impossible for them to bear huge material and financial resources and move thousands of kilometers away to live.

Then many people may wonder, since the people in the ancient Central Plains did not move to the south on a large scale, why did the population in the south surpass the population in the north? In fact, it is very simple, because there are many wars and turbulent periods in the history of the north, and the population loss is large, while the previous wars in the south have little impact and fewer people have died. With an increase and a decrease, the population of the south gradually surpassed that of the north, which has little to do with Yiguan Nandu.

I can also give you the simplest example. Take my surname, Xu, as an example. Xu's surname originated from the won surname, and Ruomu, the son of Bo Yi, was granted the title of Xu and founded the State of Xu because he helped Dayu to control water. After the death of Xu, the descendants took the country as their surname, and most of Xu's surnames came from this. Xu is in today's Sixian County, Anhui Province, and Sihong County, Jiangsu Province. It has been two or three thousand years since then, and Xu is still the most popular surname in this area, covering the junction of northern Anhui, northern Jiangsu and southern Shandong. I am Xu in Sixian County, Anhui Province.

Figure: Xu Guo

It can be seen that the migration of people in ancient times was not as frequent as we thought, and the southern crossing of Yiguan was just the southern crossing of some upper-class society. For a large number of people at the bottom, they actually hardly moved or were unable to move for thousands of years.