Chʻang-wŏn Yi

• Chungguk chinchʻul Hanʾguk kiŏp ŭi nosa kwanʾgye mit inchŏk chawŏn kwalli
• Taejol hwaitʻŭ kʻalla ŭi nŭngnyŏk kaebal kwa kyŏngnyŏk kwalli e kwanhan yŏnʾgu