King Chungseon
Twenty-sixth king of Goryeo, who founded the Mangwondang library in Dadu where Goryeo and Yuan scholars met
The son of Chungnyeol and a Yuan princess. Early in his reign he abolished the Jeongbang and set up the Sallimwon to pursue reform, but was forced out by Yuan interference and later returned to the throne. He introduced a state monopoly on salt and named the noble lineages eligible to marry into the royal family. He ruled largely from the Yuan capital, where in 1314 he founded the Mangwondang library, letting scholars such as Yi Je-hyeon associate with Yuan scholars and helping bring Neo-Confucianism to Goryeo.