Changsà Âng County is a kun, or county, in northern North Phyà Ângan province, North Korea. It is bordered by Pyà Âktong to the east, Tongchang and Taegwan to the south, Sakchu to the west; to the north, it faces China across the Yalu (Amrok) River.
Changsà Âng appears as "Changseong" in South Korea's Revised Romanization and as Changcheng in Chinese records, as during its occupation by Mao Wenlong's forces during the Manchu conquest of China.
Changsà Âng's terrain is steep and mountainous, sloping generally downward from the southeast toward the Yalu. The Kangnam Mountains and Pandà Âk Mountains both pass through the county. The highest point is Piraebong, at 1470 m. The county is drained by various tributaries of the Yalu, including the Yà Ângjuchà Ân (ìÂÂ주ì²Â) and Namchangchà Ân (ë¨창ì²Â), as well as by the Changsà Âng River, a tributary of the Taeryà Âng. The Yalu itself has been blocked by the Suphung Dam to create Suphung Lake.
Changsà Âng county is divided into 1 à Âp (town). 1 rodongjagu (workers' district) and 15 ri (villages):
Annual rainfall in Changsà Âng is 1000 mm, with an annual average temperature of 7.3 ðC (the average fluctuating from -11.6 ðC in January to 22 ðC in August). Temperatures are of course much colder in the mountains, with the snows atop Piraebong not melting until late May. Fog is common near Suphung Lake. Some 80% of the county's land is forested, while only 6.1% is under cultivation.
Sericulture is widely practised; other crops include maize, rice, peanuts, gochu peppers, sweet potatoes, and various fruits. Changsà Âng also leads the county in the production of sheep. Various products, including lumber and medicinal herbs, are harvested from the forests. In addition, gold, tungsten, and coal are mined from the hills. Local manufactured products include gochujang and alcohol.
There are no railroads, but a road does connect Changsà Âng to Sakchu, Tongchang, and Pyà Âktong. Freight and passenger traffic is also carried by ships plying Lake Suphung; the lake is also used to transport raw lumber.