Lin Yi, the top student in Blue Star High School, wakes up and travels back in time to the sixth year of Zhenguan, becoming Li Shimin's illegitimate son. His mother died unjustly, and his status in the palace was embarrassing - the emperor's attitude was cold, the prince regarded him as a threat, and only the Empress Changsun secretly protected her.
Fortunately, he was bound to the "Civilization Engine" system: document library, deduction aid, and technical blueprint. Don't engage in palace fighting, don't rush to recognize your father, first improve farm tools, innovate papermaking, open Chongwentang, and use dimensionality reduction to win the hearts of the people. When Li Shimin asked him what he wanted, he said: "I want everyone in the Tang Dynasty to have enough to eat."
But his chessboard doesn't stop at Chang'an. In the midst of the prince's seizure, the siege of aristocratic families, and the Turks' invasion of the border, Li Yi used Longxi as his base to train troops in the fields, implement the New Deal, and build the barren land into a reform demonstration area. He refused to be the prince and rebel, but he presented Li Shimin with the "Eternal Law" - a fundamental law that restricted imperial power and established a political council.
Father and son went from suspicion to confrontation, and finally reconciled on the bedside. After Li Shimin's death, Li Yi took the initiative to hand over his military power and poured his life's efforts into Chongwen Hall. Decades later, the students he trained spread all over the country, and institutional changes took root. Before he died, he told his students: "Civilization is to allow ordinary people to live without kneeling."
Historical records: Li Yi, the illegitimate son of Emperor Taizong, was a reformer, scientist, and educator. He never proclaimed himself emperor, but he changed the course of the millennium.
