What was the ancient name of Yanchang Town in Zhenba, Shaanxi Province?
1950 established Yanchang Township and Xiangdong Township, 1956 merged Xiangdong Township, 1958 changed to administrative district,196/established commune, 1966 changed to Chiwei commune,/kloc- 1996, with an area of 136 km2 and a population of16,000, governs Yanchang, Xiangdong, Liu Jiadong, Nangou, Tianjing, Kuixing, Wangjiabian, Ziping, Yin Shi, Datianba, Carina Lau, Yuantan, Longxi, Maobazi and Baixing.