A SECRET WEAPON FOR NAJU CITY

For the duration of this tumultuous period, Goryeo momentarily conquered Liaoyang in 1356, repulsed two significant invasions through the Purple Turbans in 1359 and 1360, and defeated the ultimate endeavor via the Yuan to dominate Goryeo when General Ch'oe Yŏng defeated a Mongol tumen in 1364. Over the 1380s, Goryeo turned its awareness towards th