In March 1974, a group of farmers in Xiyang Village, Lintong District, Xi'an City, Shaanxi Province, were digging a well that was 1.5 kilometers east of the Mausoleum of the First Emperor, that’s when they accidentally found fragments of pottery figures and ancient bronze weapons. Later, after the drilling and excavation of the archaeologists, a total of three terracotta pits were found, and they were named in chronological order of discovery: Pit No. 1, No. 2, and No. 3. The total area of the three pits is more than 20,000 square meters, and it is estimated that more than 7,000 pieces of terra-cotta warriors, more than 100 chariots and hundreds of thousands of weapons can be unearthed. These three pits are both independent and interconnected, forming a huge military fortress, symbolizing an army defending the mausoleum of the First Emperor.