Ma'anshan, also colloquially written as Maanshan, is a prefecture-level city in the eastern part of Anhui province in Eastern China. An industrial city stretching across the Yangtze River, Ma'anshan borders Hefei to the west, Wuhu to the southwest, and Nanjing to the east. It is a satellite city in the Nanjing metropolitan area and is also a city in the Yangtze River Delta Economic Zone.