Mausoleum site holds clues of China's evolution

"Many of the unearthed cultural relics were excavated for the first time, and those discovered are of great use in exploring the political, economic, military and cultural aspect of the Qin Dynasty," he said.

Emperor Qinshihuang's Mausoleum Site Museum began archaeological excavation in 2011 on the west side of the outer city of the mausoleum, discovering 39 ancient graves, 32 ash pits, four pottery kilns and four ancient riverbeds.