What is the significance and purpose of studying Shiyan immigrants and their influence in Wei, Jin, Southern and Northern Dynasties?

Wei, Jin, Southern and Northern Dynasties was a time of frequent wars, which caused a large number of northerners to move south, and many of them entered the Shiyan mountainous area. The immigration of northern immigrants has effectively promoted the economic and social development of Shiyan.

At the end of the Eastern Han Dynasty, there was great chaos in the world, and feudal warlords were divided into one side and scuffled. In 208 AD, after Cao Cao pacified the north, he led the army to Liu Biao, who was separated from Jingzhou, and Liu Bei, who was attached to Liu Biao. Since then, Wei, Shu and Wu have been fighting for Jingzhou. In the process of the three-party struggle for Jingzhou, Shang Yong, Fangling and other counties once became the focus of the three-party struggle because of their important strategic position. ...................................................................

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