84 THE PASSING OF KOREA By the year 1260 the Mongols were tired of slaughter, and as the submission of Koryu was complete, a Resident was placed at the capital, and the King was induced to leave the island and return to Songdo. But there was no such thing as independence. The restless and brutal Mongols played all manner of childish tricks with the government, and the Mongol garrisons in various parts of the country treated the people to horrors worse than actual war. It became at last unbearable, and the King sent his son to the Chinese capital to protest against Mongol methods in Korea. The prince found that things were unstable in China. The Mongol Emperor died and a usurper grasped the reins of power. The prince with splendid tact hastened southward, and was the first to warn the heir, who was none other than the great Kublai Khan, that his succession was disputed. By reason of this timely warning the Mongol prince was enabled by forced marches to fall suddenly upon the forces of the usurper and disperse them. Coming to his capital in triumph, he heaped favours on the Korean prince and granted him all he asked for his own country. The obnoxious troops were withdrawn from the peninsula, and an era of good-will and peaceful intercourse followed.
It was in 1265 that the idea of invading Japan first formed itself in the brain of the Mongol conqueror. He first sent envoys to Japan, accompanied by Korean envoys, demanding that Japan swear allegiance to the Mongol power. They were treated with marked disrespect at the Japanese capital, forbidden to enter the gates of the city, provided with miserable food, made to wait for months without an answer, and finally dismissed without a word of reply to the pompous summons of the world-conqueror in China. Kublai Khan was not the sort of man to relish this, and he immediately resolved upon the invasion. He knew he had no boats, and that his people knew nothing about navigation ; so he sent to Korea, demanding that she furnish a thousand boats to carry the army of invasion across the straits. Korea was also ordered to furnish four thousand bags of rice and a
