city, eastern Gansu sheng (province), north-central China. It lies near the borders of the Hui Autonomous Region of Ningxia (Ningsia) and Shaanxi (Shensi) province. Located in the eastern Gansu loesslands, Pingliang is situated in the upper valley of the Jing River, which is a tributary of the Wei River. Wheat is the chief crop in the area; other economic activities include wool and tobacco processing. Pingliang served as the transport centre by road for the eastern Gansu loesslands until the completion of the railroad between Xianyang (Shaanxi) and Lanzhou, the provincial capital. Another rail line, built between Baoji (Shaanxi) and Zhongwei (Ningxia) and completed in the mid-1990s, connects Pingliang to the rail network of the region. The city has developed industrially since the 1980s, mostly based on small and medium-sized operations engaged in processing agricultural produce and traditional Chinese medicines, tanning, and manufacturing building materials. A major coal mine, the biggest in the province, has been developed south of the city in Huating and provides fuel for generating thermal electric power in the city. Pop. (2002 est.) 142,299.