Hangzhou yipintang photography

On a large scale, there are three times.

The first time was in the Jin Dynasty. In the Western Jin Dynasty (AD 290-306), the Eight Kings Rebellion occurred, and the rule was severely weakened. Then the nomadic people in the west and north coincided with the cold climate, unsustainable water plants and difficult life. Therefore, nomadic people migrated to the Central Plains on a large scale, which is said in old history books. This, in turn, led to the indigenous people in the Central Plains moving southward and entering the Jiangnan area on a large scale.

The second time was after the Anshi Rebellion in the Tang Dynasty (755-763). The armies of An Lushan and Shi Siming fought bravely and treated the people more fiercely. The Central Plains region, represented by Luoyang, suffered large-scale destruction. This in turn prompted China aborigines to move southward on a large scale.

The third time was in the Song Dynasty. Due to the rise of nomadic peoples in the north and northwest, such as the Khitan nationality to which Feng Xiao belongs, the Jurchen nationality to which Akuta belongs, the Mongolian nationality to which Genghis Khan belongs, and the Tangut to which Xixia belongs as mentioned in "Tianlong Babu", "First Class Hall" has been set up, and the wars in the northern and northwest borders have continued, leading to the final demise of the Northern Song regime in the hands of the Jurchen nationality. The population of the Central Plains once again moved southward on a large scale.

The above three times were all due to the influence of nomadic people in the north or northwest going south. Because nomadic people rely on the advantage of force and make a living by large-scale looting, not agricultural production. This has caused great losses to farmers. In the early days after nomadic people went south, it always triggered a large-scale migration of residents. From the 2nd century BC to 1 century AD, the Han regime expelled the northern nomadic Huns, which triggered a large-scale ethnic migration on the Eurasian grassland. This was the largest national migration activity before the large-scale western colonization in modern times, which eventually led to the demise of the Roman Empire like a domino.

However, after a period of time, the nomadic regime will gradually accept the ruling strategies and methods of the Central Plains and will gradually stabilize. For example, Manchu in Qing Dynasty.