DETAILS, FICTION AND KOREA

Goryeo was invaded via the Mongols in 7 key campaigns from the 1230s until the 1270s, but was under no circumstances conquered.[117] Exhausted following many years of combating, Goryeo sent its crown prince on the Yuan capital to swear allegiance into the Mongols; Kublai Khan acknowledged, and married one of his daughters to your Korean crown princ