Province of northwest China, bounded to the north by Mongolia and Inner Mongolia, to the east by Ningxia Hui Autonomous Region and Shaanxi, to the south by Sichuan, and to the west by Qinghai and Xinjiang Uygur Autonomous Region; area 530,000 sq km/205,000 sq mi; population (2000 est) 25,620,000. The main cities are Lanzhou (capital), Y... Found on https://www.encyclo.co.uk/local/21221