The work of reconstruction was now commenced, in 1012. Kyöng-ju was no longer called the eastern capital but was changed back to a mere prefecture. The twelve
The twelve provinces were reconstructed into five and there were seventy-five prefectures in all. This plan however was abandoned two years later. Now that Koryŭ had regained control of her own territory, the Yŭ-jin tribe thought best to cultivate her good will and so sent frequent envoys with gifts of horses and other valuables. But when the Emperor of Kitan, angry because the King refused on the plea of ill health to go to Kitan and do obeisance, sent an army and seized six of the northern districts this side the Yalu, the Yŭ-jin turned about and ravaged the northeast boundary. The next year the Yŭ-jin joined Kitan and crossed the Yalu but were speedily driven back by Gen. Kim Sang-wi.
In 1014 the King came to the conclusion that he had made a mistake in casting off the friendship of China and sent an envoy to make explanations; but the Emperor Chin-jong (Sang dynasty) was angry because he had been so long neglected and would have nothing to do with the repentant Koryŭ.
In the autumn the Kitan army was again forced back across the border. The Koryŭ army had now grown to such proportions that the question of revenue became a very serious one and the officials found it necessary to suggest a change. They had been accustomed to “squeeze” a good proportion of the soldiers’ pay and now that there was danger of further change which would be only in the officials’ favor, the soldiers raised a disturbance, forced the palace gates, killed two of the leading officials and compelled the King to banish others. They saw to it that the military officials took precedence of civil officials. From that time on there was great friction between the military and civil factions, each trying to drive the other to the wall.
The next year, 1015, the Kitan people bridged the Yalu, built a wall at each end and successfully defended it from capture; but when they attempted to harry the adjoining country they were speedily driven back. The military faction had now obtained complete control at the capital. Swarms of incompetent men were foisted into office and things were going from bad to worse. The King was much dissatisfied at this condition of affairs and at some-one’s advice decided to sever the knot which he could not untie. He summoned all the leaders of the military faction to a great feast, and, when he had gotten them all intoxicated, had them cut down by men who had lain concealed in an adjoining chamber. In this way nineteen men were put out of the way and the military faction was driven to the wall.
Year by year the northern people tried to make headway against Koryŭ. The Sung dynasty was again and again appealed to but without success. Koryŭ was advised to make peace with Kitan on the best terms possible. The Kitan generals, Yu Pyul, Hăng Byŭn and Ya-yul Se-chang made raid after raid into Koryŭ territory with varying success. In 1016 Kitan scored a decisive victory at Kwak-ju where the Koryŭ forces were cut to pieces. Winter however sent them back to their northern haunts. The next year they came again and in the following year, 1018, Gen. So Son-ryŭng came with 100,000 men. The Koryŭ army was by this time in good order again and showed an aggregate of 200,000 men. They were led by General Kang Kam-ch‘an. When the battle was fought the latter used a new form of strategem. He caused a heavy dam to be constructed across a wooded valley and when a considerable body of water had accumulated behind it he drew the enemy into the valley below and then had the dam torn up; the escaping water rushed down the valley and swept away hundreds of the enemy and threw the rest into such a panic that they fell an easy prey to the superior numbers of the Koryŭ army. This was followed by two more victories for the Koryŭ arms.
The next year, again, the infatuated north-men flung themselves against the Koryŭ rock. Under Gen. So Son-ryŭng they advanced upon Song-do. The Koryŭ generals went out thirty miles and brought into the capital the people in the suburbs. Gen. So tried a ruse to throw the Koryŭ generals off their guard. He sent a letter saying that he had decided not to continue the march but to retire to Kitan; but he secretly threw out a strong force toward Song-do. They found every point disputed and were obliged to withdraw to Yŭng-byŭn. Like most soldiers the Koryŭ forces fought best when on the offensive and the moment the enemy took this backward step Gen. Kang Kam-ch‘an was upon them, flank and rear. The invaders were driven out of Yŭng-byŭn but made a stand at Kwi-ju. At first the fight was an even one but when a south wind sprang up which lent force to the Koryŭ arrows and drove dust into the eyes of the enemy the latter turned and fled, with the exulting Koryŭ troops in full pursuit. Across the Sŭk-ch‘ŭn brook they floundered and across the fields which they left carpeted with Kitan dead. All their plunder, arms and camp equipage fell into Koryŭ hands and Gen. So Son-ryŭng with a few thousand weary followers finally succeeded in getting across the Yalu. This was the greatest disaster that Kitan suffered at any time from her southern neighbor. Gen. So received a cool welcome from his master, while Gen. Kang, returning in triumph to Song-do with Kitan heads and limitless plunder, was met by the King in person and given a flattering ovation. His Majesty with his own hands presented him with eight golden flowers. The name of the meeting place was changed to Heung-eui-yŭk, “Place of Lofty Righteousness.” When Gen. Kang retired the following year he received six honorary titles and the revenue from three hundred houses. He was a man of small stature and ill-favored and did not dress in a manner befitting his position, but he was called the “Pillar of Koryŭ.” Many towns in the north had been laid waste during the war and so the people were moved and given houses and land. The records say that an envoy came with greetings from the kingdom of Ch‘ŭl-ri. One also came from Tă-sik in western China and another from the kingdom of Pul-lă. Several of the Mal-gal tribes also sent envoys; the kingdom of T‘am-na was again heard from and the Kol-bu tribe in the north sent envoys. In 1020 Koryŭ sent an envoy to make friends again with her old time enemy Kitan and was successful. The ambition of the then Emperor of Kitan had apparently sought some new channel. Buddhism, too, came in for its share of attention. We read that the King sent to Kyöng-ju, the ancient capital of Sil-la, to procure a bone of Buddha which was preserved there as a relic. Every important matter was referred in prayer to the Buddhistic deities. As yet Confucianism had succeeded in keeping pace with Buddhism[Buddhism]. In 1024 the King decreed that the candidates in the national examinations should come according to population; three men from a thousand-house town, two from a five hundred[hundred]-house town and one each from smaller places. Several examinations were held in succession and only those who excelled in them all received promotion. The great struggle between Buddhism and Confucianism, which now began, arrayed the great class of monks on the side of the former and the whole official class on the side of the latter. The former worked upon the superstitions of the King and had continual access to him while the latter could appeal to him only on the side of general common sense and reason. Moreover Buddhism had this in its favor that as a rule each man worked for the system rather than for himself, always presenting a solid front to the opposition. The other party was itself a conglomerate of interests, each man working mainly for himself and joining with others only when his own interests demanded. This marked division of parties was strikingly illustrated when, in 1026, in the face of vehement expostulations on the part of the officials, the King spent a large amount of treasure in the repairing of monasteries. The kingdom of Kitan received a heavy blow when in 1029 one of her generals, Tă Yŭn-im, revolted and formed the sporadic kingdom of Heung-yo. Having accomplished this he sent to the King of Koryŭ saying “We have founded a new kingdom and you must send troops to aid us.” The Koryŭ officials advised that advantage be taken of this schism in Kitan to recover the territory beyond the Yalu which originally belonged to Ko-gu-ryŭ and to which Koryŭ therefore had some remote title. Neither plan was adopted. It seemed good to keep friendly with Kitan until such time as her power for taking revenge should be past, so envoys were sent as usual, but were intercepted and held by the new King of Heung-yo. This policy turned out to be a wise one, for soon the news came that Kitan had destroyed the parvenu.
Now that the fortunes of Koryŭ were manifestly in the ascendant, many people in the north sent and swore allegiance to her, thus following the example of a certain Kitan envoy who at this time transferred his citizenship voluntarily from Kitan to Koryŭ.
The King died and his son Heum, posthumous title Tŭk-jong, came to the throne in 1032. He married his own sister. All friendly relations with Kitan were broken off, because the bridge across the Yalu was not destroyed. It did not seem a friendly act to leave this standing menace to the peace of Koryŭ. In view of this the King ordered a wall to be built across the entire peninsula from the Yalu River to the Japan Sea. It was nearly a thousand li long. This would seem almost incredible were it not that the facts are given in such detail. The wall was twenty-five cha high and the same in breadth and stretched from Ko-gung-nă Fortress, near Eui-ju on the Yalu, to Yöng-heung near the Japan Sea. The Kitan people tried to hinder this work but without avail. This period marks the acme of Koryŭ’s power and wealth. She had reached her zenith within a century and a quarter of her birth and now for three centuries she was destined to decline.
The younger brother, Hyöng, of this King Tŭk-jong, succeeded him in 1035, after a short reign of three years. He continued the work of making impregnable the defenses of the north. He built a wall from Song-ryŭng Pass in the west to the borders of the Yŭ-jin tribe in the north-east. He also built a Fortress Chă-jŭn, now Ch‘ang-sŭng. His reign beheld the riveting of Buddhistic chains upon the kingdom. Those who could read the signs of the times surmised this when, in 1036, the King decreed that, if a man had four sons, one of them must become a monk. Because of the Buddhistic canon against the spilling of blood the death penalty was commuted to banishment. Another Buddhistic anniversary was instituted. The King also inaugurated the custom of having boys go about the streets bearing Buddhistic books upon their backs from which the monks read aloud as they passed along. This was for the purpose of securing blessings for the people.