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During this tumultuous period of time, Goryeo momentarily conquered Liaoyang in 1356, repulsed two significant invasions through the Red Turbans in 1359 and 1360, and defeated the ultimate attempt via the Yuan to dominate Goryeo when Standard Ch'oe Yŏng defeated a Mongol tumen in 1364. Throughout the 1380s, Goryeo turned its attention towards the