The ruling line of Goryeo was permitted to rule Korea as a vassal of the Yuan, which established Zhengdong Province (literally "Conquering the East") in Korea.
Keturunan penguasa Goryeo diizinkan untuk memerintah Korea sebagai vasal Yuan, yang membentuk Provinsi Zhengdong (secara harfiah "Penaklukan Timur") di Korea.