Chen Yan, a graduate of the Department of Modern History, traveled to Yanzhou in the late Eastern Han Dynasty after an accident, which coincided with the difficult period when Cao Cao was conquering Lu Bu. He has no extraordinary abilities. He only relies on his solid historical knowledge and superficial understanding of the operation of ancient society. He came up with a simple method of storing grain and grass when the hungry people were displaced. Unexpectedly, he attracted the attention of Cao Cao's counselors, and then met Mengde.
After that, Chen Yan was based on reality and did not talk about advanced changes. He only used history as a guide at key moments: before the battle of Guandu, he reminded Cao Cao to guard against the Wuchao grain road, after the peace of Hebei, he suggested light corvees and low taxes to stabilize the people, and when he went south to Jingzhou, he offered suggestions to appease the nobles. He always adhered to the principle of propriety and never took credit for himself. He gradually became a trusted assistant to Cao Cao.
During his journey to conquer the world, Chen Yan witnessed Cao Cao's talents and struggles, and also experienced the cruelty of troubled times and the suffering of people's livelihood. With his meager strength, he assisted Cao Cao in wiping out the heroes, integrating the north, and moving step by step towards the goal of ending division and reunification. In the magnificent scroll of the Three Kingdoms, he left a faint trace of a modern passer-by.
