Li Mingyuan, a graduate student in the Department of Modern History (concurrently majoring in political science and engineering), was reborn as a young emperor in the middle of the Ming Dynasty due to an accident (set in 1567, when Emperor Longqing died early, and the protagonist succeeded as the emperor's nephew, with the reign name "Yongxi"). Faced with the mess of cabinet dictatorship, eunuchs' interference in politics, frequent border troubles, financial collapse, and ideological restrictions, he used modern knowledge and historical perspective to achieve the resurgence of the dynasty step by step.