Ma'anshan (simplified Chinese: 马鞍山; traditional Chinese: 馬鞍山; pinyin: Mǎ'ānshān), also 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.