Lin Fu, a student of modern history, accidentally traveled to the Taihe period of Cao Wei and accidentally entered Sima Yi's army. He does not have any extraordinary abilities, but relies on the solid knowledge of the history of the Three Kingdoms in his mind to cautiously gain a foothold in the military camp. At first, he only made occasional comments in the dispatch of military supplies and research and assessment of military situation, but because he was in line with the trend of the war situation, he gradually attracted Sima Yi's attention.
After that, Lin Fu followed Sima Yi to resist Zhuge Liang's Northern Expedition, predicting the Shu army's shortcomings in food and grass; he helped pacify Gongsun Yuan in Liaodong, and proposed strategies to divide the enemy army. In the internal power disputes within Cao Wei, he secretly helped Sima Yi avoid the suppression of Cao Shuang's forces, laying the groundwork for the Gaoping Ling Incident.
He always acted as an "insider" and assisted the three generations of the Sima family in line with the logic of the times. He witnessed the gradual concentration of power in the Sima family, and ultimately promoted the embryonic form of the Western Jin Dynasty, helping the world to move towards unification. In this magnificent historical process, he also completed the transformation from a historical spectator to a participant.
