Bharathi Cement: #Amazing Architecture The "Great Wall of China" built in 220–206 bc by "Qin Shihuang" who is the First Emperor of China. The entire wall is measured & Concluded to be 21,196 km (13,171 mi). It is a series of fortifications made of stone, brick, tamped earth, wood, and other materials. This is Build to protect the "Chinese states" and "Empires" against the raids and invasions of the various nomadic groups of the Eurasian Steppe. The main Great Wall line stretches from Shanhaiguan in the east, to Lop Lake in the west, along an arc that roughly delineates the southern edge of Inner Mongolia.