Everything displayed in Exhibition Hall Number One of the Shaanxi History Museum is 2,000 to one million years old. Of course, this time period must include terracotta warriors and horses from the Qin Shi Huang Mausoleum. He reigned from 247 BC – 221 BC. Other exhibits in this hall explain the rise and fall of the Qin dynasty. The dynasty only lasted from 221 BC until 206 BC. Yet it was the foundation for Imperial China and set the precedence for how the country was ruled by emperors until 1912.