Mausoleum of Qin Shi Huang was built from 246 BC to 208 BC, by order of Qin Shf Huang, the emperor of the first unified country of centralized power and various nationalities in Chinese history. It is the first and largest imperial mausoleurn with the most numerous sacrificial objects in China. The mausoleum is square in shape, with flat top and ladder-shaped profile. It rises 76 meters high, 345 meters east west, and 350 meters north south. The total area of the mausoleum and its accompanying buildings is 120,750 square meters. The grand accompanying sacrificial terracotta vaults, with a total area of 25,380 square meters, were constructed from 221BC to 2O9BC.
   
     The pottery warriors and horses in the vaults were organized in groups according to the army formation in the Qin Dynasty, which provided vivid materials for making research on the military establishment, fighting modes and army supplies in the Qin Dynasty. The excavation of terracotta warriors and horses is considered as "the eighth wonder of the world" and "one of the most spectacular archaeological finds of the century". The realistic style of terracotta warriors and horses, which serves as a transitional art style in China's history of sculpture has aroused worldwide interest.