DETAILS, FICTION AND KOREA

Goryeo was invaded through the Mongols in 7 big strategies from the 1230s till the 1270s, but was never ever conquered.[117] Exhausted just after decades of battling, Goryeo sent its crown prince on the Yuan capital to swear allegiance for the Mongols; Kublai Khan approved, and married certainly one of his daughters for the Korean crown prince,[117