The breaking up of the Mongol power was foreshadowed by the act of a certain Mongol district Hă-yang which, with its garrison of 1,800 men, now came and enrolled itself under the banner of Koryŭ. How had the mighty fallen! Less than eighty years before the world had trembled beneath the hoof-beats of the “Golden Horde.” This was followed by the submission of a wild tribe in the north called Pang-guk-chin, and a Mongol rebel sent a messenger with gifts to the court of Koryŭ. Meanwhile the Japanese were ravaging the southern and western coasts without let or hindrance. It was a curious spectacle, a country eaten up by its own excesses receiving humble deputations from former masters and at the same time being ridden over rough-shod by gangs of half-naked savages from the outlying islands of Japan. There was one tribe in the north however, called the Hong-du-jŭk or “Red-Head Robbers,” who threatened to invade the country, but forces were sent to guard against it. In the case of the Japanese marauders the difficulty was to know where they were going to strike next. There was military power enough left in Koryŭ had it been possible to so place the forces as to intercept or bring to action the robber gangs. The Japanese had really begun to threaten Song-do itself and the king wished to move the capital to Su-an in Whang-hă Province. He went so far as to send a commissioner to look over the site and report. The king was not blessed with an heir, and in 1360 he took a second wife, which was the cause of constant quarrelling and bickering.