经过魏晋南北朝时期的民族分化与融合,隋唐五代时期东北地区的民族发生了许多变化,其总体特征仍然是分化与融合,肃慎系统的民族以靺鞨为中心,其内部也在分化;秦汉时期秽貊系统的民族渐渐发生融合,出现了多源合流的渤海人;东胡系统的民族也进一步分化为室韦、契丹、奚人等等。因此隋唐五代时期东北的民族发展特征表现为同源异流和多源合流两种形式。 After the ethnic differentiation and integration in the Wei, Jin, Southern and Northern Dynasties, many changes took place in the northeast region during the Sui, Tang and Five Dynasties. The general characteristics of the nation in the Sui, Tang and the Five Dynasties were still divided and fused. There is a gradual fusion of the ethnic groups in the filth-grubs system and the emergence of multi-source confluence of the Bohai Sea people. The ethnic groups in the East Hu system have also been further differentiated into two categories: Shiwei, Khitan and Xi people. Therefore, the national development characteristics of northeast China during the Sui, Tang and Five Dynasties are characterized by the same origin and multi-source confluence.