Chen Yan, a graduate of the Department of Modern History, accidentally traveled to Shuhan in the early years of Jianxing and became an ordinary tenant farmer on the outskirts of Chengdu. At that time, Zhuge Liang was preparing for the Northern Expedition, and the Shu Han Dynasty was suffering from internal and external troubles. Although Liu Chan was not a fool, he lacked political strategies and long-term vision.
Relying on his solid historical knowledge and basic agronomy and management knowledge, Chen Yan started by improving agricultural tools and proposing a crop rotation system to help increase agricultural production. He gradually attracted the attention of local officials, and then he was able to reach Tianting. He did not rush forward or show off his skills, but only provided pragmatic strategies in key areas: helping Zhuge Liang organize military supplies to reduce the burden on the people, analyzing the pros and cons of officialdom for Liu Chan to consolidate the foundation, and even proposed fine-tuning methods for the Northern Expedition strategy that fit the national strength of the Shu Han.
He did not expand the territory, but he assisted Liu Chan's growth with the power of nourishing things, helped the Shu Han reverse its decline, step by step integrate the southwest, and connect Soochow. In the end, after Zhuge Liang's death, he still supported the Shu Han to take a different path and slowly move towards the goal of unifying the world.