Gaonu County
Gaonu County (simplified Chinese: 高奴县; traditional Chinese: 高奴縣; pinyin: Gāonú Xiàn) was an ancient Chinese county under the jurisdiction of Shang Commandery in present-day northern Shaanxi. The county was established in the Qin dynasty, during the reign of Qin Shi Huang. Iterations of Gaonu County continued until the latter Eastern Han period, albeit interrupted by rebellions and invasions. The location of Gaonu County corresponds to present-day Baota District and Ansai District within Yan'an. During the Qin dynasty and the Han dynasty, Gaonu County served as an important regional center within present-day Yan'an.