The Dadong District (大东区; 'great east district') is an industrial zone and used to be the largest of the inner city districts. Its name derives from the fact that the district started off as the residential area immediately outside the old inner city wall's Fujin Gate (撫近門), which is also called Great East Gate (大東門). It has an area of 100 km2 (39 sq mi)[1] and a population of 689,576 (2014).[2]