It was soon made evident that Chao Yuen possessed the military power to support an imperial dignity. He defeated the emperor's army in two pitched battles at Sanchuen and Yang Moulong, and many years elapsed before the Sung rulers can be held to have recovered from the loss of their best armies. The Khitans of Leaoutung took advantage of these misfortunes to encroach, and as Jintsong had no army with which to oppose them, they captured ten cities with little or no resistance. The Chinese government was compelled to purchase them back by increasing the annual allowance it paid of gold and silk. A similar policy was resorted to in the case of Chao Yuen, who consented to a peace on receiving every year one hundred thousand pieces of silk and thirty thousand pounds of tea. Not content with this payment, Chao Yuen subsequently exacted the right to build fortresses along the Chinese frontier. Soon after this Chao Yuen was murdered by one of his sons, whose betrothed he had taken from him. If Jintsong was not fortunate in his wars he did much to promote education and to encourage literature. He restored the colleges founded by the Tangs, he built a school or academy in every town, he directed the public examinations to be held impartially and frequently, and he gave special prizes as a reward for elocution. Some of the greatest historians China has produced lived in his reign, and wrote their works under his patronage; of these Szemakwang was the most famous. His history of the Tangs is a masterpiece, and his "Garden of Szemakwang" an idyll. He was remarkable for his sound judgment as well as the elegance of his style, and during the short time he held the post of prime minister his administration was marked by ability and good sense. The character of Jintsong was, it will be seen, not without its good points, which gained for him the affection of his subjects despite his bad fortune against the national enemies, and his reign of thirty years was, generally speaking, prosperous and satisfactory. After the brief reign of his nephew, Yngtsong, that prince's son, Chintsong the Second, became emperor.