As the war breaks out in Jingnan, Shen Chengze travels through the last years of Jianwen, predicts the dedication of Jinchuan Gate to the city, and wins Zhu Di's favor with his plan to secure the city. He brought modern financial wisdom to revitalize the Ming Dynasty's economy, built a granary with agricultural innovation, used firearms to strengthen the army, and used iron-clad ships to expand the maritime territory. In the collision of the high pressure of imperial power and the inheritance of Confucianism, he worked step by step to enrich the country and strengthen the army, and helped Emperor Yongle create a prosperous era that far exceeded history.