The Research of the Great Wall Built in Northern Dynasties and the Military Defense System at the Northern Border of Northern Dynasties

The Great Wall built in Northern Dynasties,which was the important component part of Chinese Great Wall culture, played a importment role in the history of The Great Wall. But there is just a few reaserch on it. The recent research also focus on the time, loaction and route of The Great Wall. This paper will arrange the relevant records and research foundings of the diffreent scholars, based on which do some deeply reseach.The first section of the paper will discuss the relationship between Northern Dynasties and Rouran, Turkic and Kumo, analysis how did the minority nationality influence the military affairs of the Northern Dynasties,explore the reason why the Northern Dynasties built Great wall. The second section of the paper will research the number of times, time, purpose, the start and end, and the route of the Great wall built in Northern Wei, Eastern Wei, Northern Qi, Western Wei anf Northern Zhou. The third section of the paper will research the military defense system at the northern border of Northern Dynasties based on the second section. The third section of the paper will research the military defense system at the northern border of Northern Dynasties based on the second section.