THE BASIC PRINCIPLES OF NAJU CITY

Through this tumultuous period, Goryeo momentarily conquered Liaoyang in 1356, repulsed two big invasions through the Red Turbans in 1359 and 1360, and defeated the ultimate try with the Yuan to dominate Goryeo when Normal Ch'oe Yŏng defeated a Mongol tumen in 1364. In the 1380s, Goryeo turned its awareness for the Wokou danger and utilized naval