Ли Сонге
In the late 12th century, there was instability in both the government and the countryside. A slave named Manjǒk (or spelled as Manjeok) (만적; 萬積) led a group of slaves who gathered outside Kaesong in 1198. The revolt plot was suppressed by Choe Chung-heon. When Yi Songgye overthrew Goryeo in 1392 and established the Joseon as Taejo of Joseon, he moved the Korean capital from Kaesong to Hanyang (modern-day Seoul) in 1394.