Duke Huan of Qi

Duke Huan of Qi, personal name Xiǎobái (小白), was the ruler of the State of Qi from 685 to 643 BC. Living during the chaotic Spring and Autumn period, as the Zhou dynasty's former vassal states fought each other for supremacy, Duke Huan and his long-time advisor Guan Zhong managed to transform Qi into China's most powerful polity. Duke Huan was eventually recognized by most of the Zhou states as well as the Zhou royal family as Hegemon of China. In this position, he fought off invasions of China by non-Zhou peoples and attempted to restore order throughout the lands. Toward the end of his more than forty-year-long reign, however, Duke Huan's power began to decline as he grew ill and Qi came to be embroiled in factional strife. Following his death in 643 BC, Qi completely lost its predominance.