I'm a computer science PhD at a military research institute, responsible for a major national project. After a research accident, I transmigrate back to the Song Dynasty and become Wen Yi, a deputy general under Marshal Yue. Unfortunately, Wen Yi had once been full of ambition, hoping to help Marshal Yue fulfill his great aspiration of serving the country loyally and reclaiming our lost lands. But he transmigrates back to the very moment when Marshal Yue and his son Yue Yun are suffering at Fengbo Pavilion. With the Yue Family Army disbanded and the loyal Yue family exiled, what should Wen Yi do, having never spent a single day by Marshal Yue's side? The plot of every chapter may take an unexpected turn. What technological wonders can a young scientific prodigy versed in modern computer science, artificial intelligence, and military studies achieve in the Southern Song, when China invented the Four Great Inventions and stood proudly at the forefront of global technology? What historic miracles can a deputy general who idolizes a national hero and is determined to fulfill Marshal Yue's unfulfilled wish of reclaiming our lost lands create? And how can a modern young man who loathes traitors and incompetent rulers prevail in the dark, sunless Southern Song, where treacherous ministers hold sway?