The new emperor took the style of Taitsong, and during his reign of twenty-three years the Sung dynasty may be fairly considered to have grown consolidated. One of his first measures was to restore the privileges of the descendant of Confucius, which included a hereditary title and exemption from taxation, and which are enjoyed to the present day. After three years' deliberation Taitsong determined to renew his brother's enterprise against Taiyuen, and as he had not assured the neutrality of the King of Leaoutung, his task was the more difficult. On the advance of the Chinese army, that ruler sent to demand the reason of the attack on his friend the Prince of Han, to which the only reply Taitsong gave was as follows: "The country of the Hans was one of the provinces of the empire, and the prince having refused to obey my orders I am determined to punish him. If your prince stands aside, and does not meddle in this quarrel, I am willing to continue to live at peace with him; if he does not care to do this we will fight him." On this the Leaou king declared war, but his troops were repulsed by the covering army sent forward by Taitsong, while he prosecuted the siege of Taiyuen in person. The fortress was well defended, but its doom was never in doubt. Taitsong, moved by a feeling of humanity, offered the Prince of Han generous terms before delivering an assault which was, practically speaking, certain to succeed, and he had the good sense to accept them. The subjugation of Han completed the pacification of the empire and the triumph of Taitsong; but when that ruler thought to add to this success the speedy overthrow of the Khitan power in Leaoutung he was destined to a rude awakening. His action was certainly precipitate, and marked by overconfidence, for the army of Leaoutung was composed of soldiers of a warlike race accustomed to victory. He advanced against it as if it were an army which would fly at the sight of his standard, but instead of this he discovered that it was superior to his own forces on the banks of the Kaoleang River, where he suffered a serious defeat. Taitsong was fortunate enough to retain his conquests over the southern Han states and to find in his new subjects in that quarter faithful and valiant soldiers. The success of the Leaou army was also largely due to the tactical skill of its general, Yeliu Hiuco, who took a prominent part in the history of this period. When Taitsong endeavored, some years later, to recover what he had lost by the aid of the Coreans, who, however, neglected to fulfill their part of the contract, he only invited fresh misfortunes. Yeliu Hiuco defeated his army in several pitched battles with immense loss; on one occasion it was said that the corpses of the slain checked the course of a river. The capture of Yangyeh, the old Han defender of Taiyuen, who died of his wounds, completed the triumph of the Leaou general, for it was said, "If Yangyeh