the Five Hegemons of the Spring and Autumn period (770-476 BC), namely: Duke Huan of Qi 齐桓公, Duke Wen of Jin 晋文公, King Zhuang of Chu 楚庄王, and alternatively Duke Xiang of Song 宋襄公 and Duke Mu of Qin 楚庄王 or King Helu of Wu 吴王阖闾 and King Gou Jian of Yue 越王勾践