King Sejong was an early king of [[Joseon Dynasty]] Korea, ruling from [[1418]] until his death in [[1450]]. He is credited with inventing the ''[[hangul]]'' writing system, and with numerous other innovations, and is revered in South Korea as a national hero. | King Sejong was an early king of [[Joseon Dynasty]] Korea, ruling from [[1418]] until his death in [[1450]]. He is credited with inventing the ''[[hangul]]'' writing system, and with numerous other innovations, and is revered in South Korea as a national hero. |