Chen Yan, a modern history enthusiast, unexpectedly returned to Yizhou in the 5th year of Zhongping. It happened that Liu Yan entered Shu because of his "emperor spirit in Yizhou division" and was about to separate one side but the foundation was not stable. He has no extraordinary powers, but relies on his familiarity with the situation in the late Han Dynasty to conceal his identity and join Liu Yan's command.
When he first entered the shogunate, Chen Yan took advantage of the chaos caused by the remnants of the Yellow Turban Party to provide suggestions to purge officials, appease the refugees, and help Liu Yan stabilize his rule. He also assisted Liu Yan in organizing and training Dongzhou soldiers and strengthening their combat effectiveness with his simple military philosophy of later generations. He was well aware of the limitations of Liu Yan and his son, and while urging them to curb their ambitions and accumulate strength, he secretly contacted the local nobles in Yizhou to resolve conflicts.
From running Bashu to waiting for the opportunity for the Northern Expedition, Chen Yan used history as a mirror and played step by step in the chess game of troubled times, helping Liu Yan avoid the wrong path of destruction, gradually encroaching on the surrounding areas, competing with Cao Cao, Liu Bei and other heroes in the Central Plains, striving to rewrite the situation of the disintegration of the late Han Dynasty and create a unique legend of unification.
