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 would be mostly followed by the later Ming wall west of Gubeikou, which includes reconstructed walls from Qi and Zhou. In more recent times, the reddish remnants of the Zhou ramparts in Hebei gave rise to the nickname "Red Wall". The Sui took power from the Northern Zhou in 581 before reuniting China in 589. Sui's founding emperor, Emperor Wen of Sui (r.581604), carried out considerable wall construction in 581 in Hebei and Shanxi to defend against Ishbara Qaghan of the Göktürks. The new walls proved insufficient in 582 when Ishbara Qaghan avoided them by riding west to raid Gansu