Genghis Khan rewarded Jena in the most magnificent manner for his successful performance of this exploit, and then, putting Kushluk's head upon a pole, he displayed it in all the camps and villages through which he passed, where it served at once as a token and a trophy of his victory against an enemy, and, at the same time, as a warning to all other persons of the terrible danger which they would incur in attempting to resist his power. CHAPTER XV. THE STORY OF HUJAKU. 1211 China.--The Chinese wall.--The frontier.--Outside the wall.--Origin of the quarrel with the Chinese.--Yong-tsi.--Genghis Khan's contempt for him.--Armies raised.--Hujaku.--Many of the khans come over on Genghis's side.--Victory over Hujaku.--Genghis Khan is wounded.--Hujaku disgraced.--Restored again.--Dissensions among the Chinese.--Advance of the Monguls.--Hujaku's rebellion.--Death of Yong-tsi.--Hujaku advances.--The battle.--Hujaku's victory.--Kan-ki's expedition.--Hujaku enraged.--Failure.--Kan-ki's second trial.--The sand-storm.--Kan-ki's desperate resolution.--The attack.--Hujaku's flight.--He is killed in the gardens.--Kan-ki is pardoned and promoted. The accounts given us of the events and transactions of Genghis Khan's reign after he acquired the supreme power over the Mongul and Tartar nations are imperfect, and, in many respects, confused. It appears, however, from them that in the year 1211, that is, about five years after his election as grand khan, he became involved in a war with the Chinese, which led, in the end, to very important consequences. The kingdom of China lay to the southward of the Mongul territories, and the frontier was defended by the famous Chinese wall, which extended from east to west, over hills and valleys, from the great desert to the sea, for many hundred miles. The wall was defended by towers, built here and there in commanding positions along the whole extent of it, and at certain distances there were fortified towns where powerful garrisons were stationed, and reserves of troops were held ready to be marched to different points along the wall, wherever there might be occasion for their services. The wall was not strictly the Chinese frontier, for the territory on the outside of it to a considerable distance was held by the Chinese government, and there were many large towns and some very strong fortresses in this outlying region, all of which were held and garrisoned by Chinese troops.