The Period of Kie-li: The Beginning of the Chinese Sovereignty (621-630)

       After Si-pi, his brother Ç'u-lo (619-621) who became the khan, followed the hard politics of his brother, and he was determined to strengthen the Sui Family against the Emperor of T'ang who had changed his conduct towards the Kingdom. But he was poisoned and killed by his wife I-ç'ing, the Chinese princess. His brother, Kie-li (621-630) who was not an adequate person became the khan. He married the traitor princess I-ç'ing, and he provoked the emperor with the stinging letters he wrote to him. He was under the influence of his wife.

 

       He was defeated in a few military attacks since being based merely on courage they were deprived of planning and program. People lost confidence because of his conduct. The Sir-Tardus, Bayirkus, and Uygurs rebelled (627). Lots of Chinese who were previously under Turkish protection were returning to their countries apologizing the Chinese Emperor of T'ang; Ki-tans and other tribes were searching ways to establish contacts with China, and they were uniting China at the border regions. The emperor Tai-tsung (627-649) was waiting for the deterioration of the situation to strike the Turks. The khan was captured while he was withdrawing after the defeat of a city he was surrounding, and he was sent to the Chinese capital under protection (630).