Chen Yan, a graduate student in the Department of Modern History, accidentally traveled to Yanzhou in the late Eastern Han Dynasty, which coincided with the time when Cao Cao first occupied Yanzhou and recruited talents. He has no extraordinary martial arts skills, nor any fantasy powers. He only relies on a solid historical context in his mind and a pragmatic way of doing things. He starts from the bottom of the staff and works step by step.
He was well aware of the advantages and hidden dangers of Cao Cao's camp, and made suggestions to stabilize the rear and divide Yuan Shao's camp before the Battle of Guandu; on the eve of Red Cliff, he urged Cao Cao to be wary of fire attacks and appease the people in Jingzhou; on weekdays, he promoted the method of farm improvement and standardized official administration to help Cao Wei accumulate national power. He avoided key mistakes in history, reconciled the conflicts between generals, assisted Cao Cao in his southern and northern campaigns, appeased the refugees, organized armaments, and laid a solid foundation for Cao Wei in troubled times.
From Yanzhou to Xudu, from Guandu to Jingxiang, Chen Yan, as a mortal, witnessed and participated in a great cause of unification sweeping the world in the turbulent and chaotic times of the Three Kingdoms. He assisted Cao Cao to defeat the heroes step by step, and finally reunited the four seas and restored the unification of the Han Dynasty.