Ma 'anshan, a fourth-tier city, is a prefecture-level city in Anhui Province, located at the intersection of eastern Anhui and Jiangsu and Anhui. It is the gateway city of Hefei metropolitan area, the core city of Nanjing metropolitan area, the member city of Yangtze River Delta urban agglomeration, the cities along the Yangtze River Economic Belt and the demonstration area for undertaking industrial transfer in Wanjiang City Belt. It governs 3 districts and 3 counties with a total area of 449 square kilometers.
Maanshan straddles the Yangtze River and borders Nanjing. Since ancient times, it has been known as "Jinling Barrier and Jiankang Lock Key". As early as the Six Dynasties, many famous ministers, dignitaries and dignitaries lingered in Maanshan, leaving behind many historical and cultural relics. It has successively won the honors of national civilized city, national pilot city of cultural service standardization, national pilot city of revitalizing the city through science and technology, southern Anhui International Tourism Culture Demonstration Zone, the first batch of national information consumption demonstration cities, and China Poetic City.