Acheng District, formerly Acheng County, (Manchu Language : Alcuka Hoton) is one of nine districts of Harbin, the capital of Heilongjiang province, People's Republic of China, covering part of the southeastern suburbs. As of 2010[update], it had a population of 596,856 residing in an area of 2,680 square kilometres (1,030 sq mi)[note 1], and is 29 km (18 mi) southeast of downtown Harbin, 190 km (120 mi) north of Jilin City, and around 50 km (31 mi) south of the Songhua River. It lies within the basin of and until 1909 was considered synonymous with the Ashi River which gave its name to the Jurchen Jin Dynasty. The district administers nine subdistricts, eight towns, one township, and one ethnic township. It borders Daowai District to the north, Bin County to the northeast, Shangzhi to the southeast, and Wuchang to the south, Shuangcheng District to the west, and Pingfang and Xiangfang Districts to the northwest.