During the reign of King Sejong in the 15th century, the Joseon Dynasty was https://play.xtreamhub.com/video/nPet6g8JToHOqsu/the embodiment of the perfect state. To the Ming China, the aspiring imperial power, Joseon presented an obstacle to territorial expansion. To protect themselves from war, King Sejong develops a secret weapon to defend their territory and take back their land and supremacy.