 He was reputed to have invented the first armored battleship (kobukson) in 1592, which is said to be the precursor of the present day submarine.The reason this pattern ends with a left hand attack is to symbolize his regrettable death having no chance to show his unrestrained potentiality checked by the forced reservation of his loyalty to the King.광개 / 廣開 – 39 movements

Gwang-Gae (or Kwang-Gae) is named after the famous Kwang-Gae-Toh-Wang, the 19th king of the Goguryeo Dynasty, who achieved the greatest territorial expansion including the greater part of Manchuria.