Great Wall of China Great Wall of China The Great Wall of China is a series of fortifications made of stone, brick, tamped earth, wood, and other materials, generally built along an east-to-west line across the historical northern borders of China to protect the Chinese states and empires against the raids and invasions of the various nomadic groups of the Eurasian Steppe with an eye to expansion. Several walls were being built as early as the 7th century BC; these, later joined together and made bigger and stronger, are collectively referred to as the Great Wall. Especially famous is the wall built in 220–206
History of the Great Wall of China 923. The Khitan leader, Abaoji's second son Yelü Deguang, convinced Shi to found a new dynasty (the Later Jin, 936946), and received the crucial border region known as the Sixteen Prefectures in return. With the Sixteen Prefectures, the Khitan now possessed all the passes and fortifications that controlled access to the plains of northern China, including the main Great Wall line. Settling in the transitional area between agricultural lands and the steppe, the Khitans became semi-sedentary like their Xianbei predecessors of the Northern Wei, and started to use Chinese methods of defence. In 1026 walls were built through central Manchuria