The manuscript published in the ninth lunar month of 1446, contains the promulgation by Sejong the Great, the fourth king of the Choson Dynasty (reigned 1418-1450), of the Korean alphabet of the same name, now called han-gul, the development of which he completed in 1443. It also contains the Haerye, or Commentaries, later explanations and examples by scholars of the Hall of Worthies, including Chong In-J'is So, or Postface. This edition is therefore often referred to as the Haerye Edition of Hunminjeongum or Hunmin Chongun. It is kept by the Kansong Art Museum. Read more on the UNESCO Memory of the World website.