The encounter between Guan Zhong and Huan Gong took place in the early years of the Spring and Autumn Period (equivalent to the era of Lu Guozhuang, Min and Gong, while the twelve Gong left in the Spring and Autumn Period were Yin, Huan, Zhuang, Min, Nuo, Wen, Xuan, Cheng, Xiang, Zhao, Ding and Ai). During the Spring and Autumn Period, the Emperor of Zhou made Luoyang his capital and lost the authority of the Western Zhou Dynasty. The ministers also supported Zhou in public opinion, but in fact they were not very obedient. Guan Zhong put forward the slogan of "respecting the king and rejecting foreign countries", which occupied a leading position in public opinion and laid a solid foundation for hegemony through economic reform and "accumulating money with money to make the soldiers rich and strong". "Nine princes" is the symbol that Qi Huangong became the first overlord in the Spring and Autumn Period.