The evils of the day became specially revealed during the reign of Ytsong, who was scarcely seated on the throne before his troops suffered several defeats at the hands of a rebel prince in Yunnan, who completely wrested that province from the empire. He was as pronounced a patron of Buddhism as some of his predecessors had been oppressors, and he sent, at enormous expense, to India a mission to procure a bone of Buddha's body, and on its arrival he received the relic on bended knees before his whole court. His extravagance of living landed the Chinese government in fresh difficulties, and he brought the exchequer to the verge of bankruptcy. Nor was he a humane ruler. On one occasion he executed twenty doctors because they were unable to cure a favorite daughter of his. His son Hitsong came to the throne when he was a mere boy, and at once experienced the depth of misfortune to which his family had sunk. He was driven out of his capital by a rebel named Hwang Chao, and if he had not found an unexpected ally in the Turk chief Likeyong, there would then have been an end to the Tang dynasty. This chief of the Chato immigrants--a race supposed to be the ancestors of the Mohammedan Tungani of more recent times--at the head of forty thousand men of his own race, who, from the color of their uniform, were named "The Black Crows," marched against Hwang Chao, and signally defeated him. The condition of the country at this time is painted in deplorable colors. The emperor did not possess a palace, and all the great towns of Central China were in ruins. Likeyong took in the situation at a glance, when he said, "The ruin of the Tangs is not far distant." Likeyong, who was created Prince of Tsin, did his best to support the emperor, but his power was inadequate for coping with another general named Chuwen, prince of Leang, in whose hands the emperor became a mere puppet. At the safe moment Chuwen murdered his sovereign, and added to this crime a massacre of all the Tang princes upon whom he could lay his hands. Chao Siuenti, the last of the Tangs, abdicated, and a few months later Chuwen, to make assurance doubly sure, assassinated him. Thus disappeared, after two hundred and eighty-nine years and after giving twenty rulers to the state, the great Tang dynasty which had restored the unity and the fame of China. It forms a separate chapter in the long period of disunion from the fall of the Hans to the rise of the Sungs.