Guan Zhong was a politician in the early Spring and Autumn Period. He carried out reforms in the State of Qi, which made the State of Qi increasingly prosperous and powerful. He assisted Duke Huan of Qi to become the first overlord in the Spring and Autumn Period. Confucius praised him and said: "Guan Zhong served as Duke Huan, dominated the princes, and brought order to the world, and the people are still receiving his blessings." Reading "The Biography of Guan Zhong", we can deeply feel his ability to govern in a pragmatic and people-oriented manner. And his statesmanlike style of taking advantage of the situation and turning disaster into success.

Sima Qian's autobiography of the reason for writing "The Biography of Guan Yan": "Yanzi was frugal, while Yiwu was extravagant. Qi Huan used hegemony, and Jinggong used it to rule. This is the second biography of Guan Yan." It pointed out that although Guan Zhong The luxury of Yan Ying is in sharp contrast to the frugality of Yan Ying, but they are both outstanding politicians of Qi State. Guan Zhong assisted Duke Huan to achieve hegemony and his achievements were shining brightly. Yan Ying assisted Duke Jing to achieve great achievements in the world. , as a model for future generations, although the two were separated by more than a hundred years, they were both from Qi, both famous and prime ministers, and both made outstanding contributions to the state of Qi, so their joint biography was written as "Biography of Guan Yan".