In the history of the Fusang island country, there was a great split and the confrontation between the Southern and Northern Dynasties.After more than a hundred years of rule, the Hojo family that set up the shogunate in Kamakura was already in the west, and daimyos from all over the country had already occupied the land and were gradually separated from the Kamakura Shogunate.At this time, the contradiction between the ascension of the Emperor of Fuso and the shogunate was irreconcilable. Therefore, Emperor Daigo contacted the nobles and samurai who were dissatisfied with the shogunate, and under the cover of the nightly banquet, he launched a reversal of the Emperor, which was the famous Emperor's rebellion in history.So the Sun and Moon Dynasty sent General Ming Yu, the Tianbao General, to lead a 30,000 naval army, and took more than 100 sea ships to start the expedition to Fusang Kingdom. Since the sea ships were painted with black paint, this incident was recorded by the historical records of Fusang Kingdom as a black ship.