Qin Yucheng site, located in the southern suburbs of Fengxiang County, Baoji City, Shaanxi Province, is a key cultural relics protection unit in the country. Yucheng is the ancient capital of pre-Qin Qin, from the first year of Qin De (677 BC) to the second year of Qin Xiangong (383 BC), Qin Kingdom ruled in Yucheng for 294 years, after the 19th generation of Qin kings. Yucheng is the longest-lasting capital of Qin and the most ruling kings in Qin Dynasty, and is an important milestone in the development history of Qin Dynasty.