Wu Pass, Danfeng, Shaanxi 陕西丹凤武关
Wu Pass stands on the north bank of the Wuguan River in eastern Danfeng County, Shaanxi, among the valleys of the southeastern Qinling. Called Shaoxi Pass in the Spring and Autumn period, it was the southern gate of the state of Qin and, with Hangu Pass, Xiao Pass and Dasan Pass, one of the Four Barriers of Qin. In the Warring States period King Huai of Chu came here to meet King Zhaoxiang of Qin, was seized and died a captive in Qin; at the end of the Qin, Liu Bang entered the Guanzhong through this pass and advanced on Xianyang.