The Five Hegemons refers to several especially powerful rulers of Chinese states of the Spring and Autumn period of Chinese history (770 to 476 BCE), sometimes alternatively referred to as the "Age of Hegemons". There are various lists of five rulers of those certain states which rose to power over the other states of this time period, states which were also formed during the period of dissolution of a once real and strong central state, namely the empire of the Zhou dynasty. The Hegemons mobilized the remnants of the Zhou empire, according to shared mutual political and martial interests. An especially prominent Hegemon was Duke Huan of Qi.