Detailed Notes on Korea
During this tumultuous interval, Goryeo momentarily conquered Liaoyang in 1356, repulsed two substantial invasions because of the Purple Turbans in 1359 and 1360, and defeated the final attempt by the Yuan to dominate Goryeo when Standard Ch'oe Yŏng defeated a Mongol tumen in 1364. During the 1380s, Goryeo turned its awareness towards the Wokou th