The Wanggung Sumunjang (Korean: 왕궁수문장; Hanja: 王宮守門將) literally translates as door guard of the royal palace or Sumungun (Korean: 수문군; Hanja: 守門軍) literally translates as military doorkeepers, for short is a royal guard unit of the Joseon Dynasty, whose primary duty is to guard the walls and gates of the Five palaces of Seoul.