Sakju County Cheonmasan Army Hoengseong County Cheolli Jangseong Committee for the Five Northern Korean Provinces Sup'ung Dam Yang Se-bong Mongol invasions of Korea 2019 North Korean parliamentary election 1986 North Korean parliamentary election 2014 North Korean parliamentary election Pyeongbuk Railway Provinces of Korea North Pyongan Province Donggukyeojiseungram China–North Korea border Natural monuments of North Korea Cultural assets of North Korea 2008 North Korean census