Introduction to "One Kuang Tianxia": Sima Qian recorded in "Historical Records": Guan Zhong immediately used it and recognized the government of Qi. Qi Huan Gong took hegemony, and the nine princes joined forces to unite the world. This was Guan Zhong's plan. "The Analects of Confucius" says: Guan Zhong and Duke Huan dominated the princes and brought order to the world. The people to this day have received his blessings. Wei Guanzhong, I was sent to the left.