What are the great migrations in the history of China?

In the history of China, there have been three major ethnic migrations of the Yi people, namely:

First, the Yongjia Rebellion, the Jinshi moved south, and the Han people in the Central Plains went south to Jiangnan, Hunan and Hubei.

At the end of the Western Jin Dynasty, there was a rebellion of eight kings, and the strength of the rulers was greatly reduced. Northern minorities took the opportunity to go south and invaded Luoyang, the hinterland of the Central Plains. This is the famous five chaos in history.

The royal aristocrats, rich families and large families of the Han nationality in the Central Plains moved south one after another, which led to the emergence of many hometown of overseas Chinese in the middle and lower reaches of the Yangtze River.

Such as Nansizhou, South Xuzhou, South Yanzhou, South Hongnong and South Xin 'an, refer to the hometown of overseas Chinese of northerners exiled in Jiangnan during the Eastern Jin and Southern and Northern Dynasties.

Second, the Anshi rebellion, the Central Plains smeared charcoal, and Han residents in Henan, Hebei and Shaanxi went south to Jianghuai and west to Sichuan.

The Anshi Rebellion lasted for eight years, which caused serious damage to the social economy of the Tang Dynasty.

More seriously, since then, the Central Plains region has fallen into a state of chaos in which the vassal regime has been divided for a hundred years, and the relatively peaceful south has once again become the first choice for Central Plains residents to escape from the war.

From Jingzhou, Hubei Province to Changde, Hunan Province, the registered permanent residence increased tenfold due to immigration.

In Taihu Lake Basin, the population has also increased significantly, and Wuxian immigrants may account for one-third of the county's household registration.

From Xiangzhou to the south along the Hanshui River and back to Hubei, the number of registered permanent residence in each state has increased to varying degrees, and even the immigration route is spotty.

Third, the shame of Jingkang, the son of heaven was covered with dust, the nomads from the south, the emperor from the south, and the residents of the Central Plains moved south on a large scale.

His escape this time is recorded in many novels and operas in Ming and Qing Dynasties.

The total migration to the south is 5 million, which is the largest migration of Han nationality in the Central Plains.

Today, there are a large number of northern immigrants in southeast provinces, even as far away as Fujian and Guangdong, with relatively concentrated areas in southern Jiangsu and Zhejiang. The areas with relatively dense immigrants are from Suzhou to Ningbo, and of course the highest concentration is Hangzhou.

This immigration activity has formed a "Hakka" ethnic group with great influence in the world today.

Shortly after Jin entered the Central Plains, Mongolia rose and continued to invade the Central Plains.

People from the Central Plains continued to move south, and Henan became the period with the least population in history.