The Bamboo Annals records that King Mu of Zhou lived in the state of Zheng,and the bronze inscription of Western Zhou also has a similar record;Records of the Historian Annals of Qin Shi Huang contains Qin De Gong's residence in the Dazheng Palace after moving the capital Yongcheng,and Garden of Stories records that emperor Qin Shi Huang moved to the Empress Dowager Yuyang Palace.Through the combing and analysis of documents and archaeological data,it can be found that the Qin Yuyang Palace and the Zhou capital Xizheng are closely related and have a similar geographical view,and should be near the ruins of Qin Yongcheng,that is,the area of Fengxiang,Shaanxi today;The Dazheng Palace and Xizheng should be in the ruins of Shuigou Zhoucheng near the ruins of Fengxiang yongcheng,and the Yuyang Palace should be within the ruins of Fengxiang yongcheng.