A modern chemistry graduate student opens his eyes and discovers that he has transmigrated into Prince Fu Su, a prisoner awaiting death in the imperial dungeon! Using his scientific knowledge, he exposes the poison in the elixir of immortality and saves Qin Shi Huang, completely reversing the relationship between father and son. After leaving prison, he investigates taverns, takes on powerful ministers, recruits Zhang Liang, and heads to Shangjun to supervise the army. He establishes the Divine Mechanism Battalion, develops steelmaking and sword production, and equips the frontier troops with repeating crossbows and a complete set of horse equipment, forging the Great Qin Dragon Cavalry. After a crushing victory in military exercises, he wins over Meng Tian and Li Meng. He establishes academies and medical clinics and provides work relief through public projects, carving out a path to survival despite the complete loss of grain and military supplies. Facing the Xiongnu, Yelang, and undercurrents within the imperial court, he advances step by step, rising from a condemned prisoner to the heart of the empire. Watch how Fu Su defies fate and leads three million Qin soldiers to keep the Qin Empire alive for countless generations!