Proton

After traveling through time and becoming an abandoned son of Southern Chu, Ji Yue's career as a hostage of Northern Yan was a hellish start - his brothers were poisoned, the Yan people made things difficult for him, and he was surrounded by enemies. But inside him is the soul of an engineering soldier. The accumulation of past lives is the sharpest knife. When Princess Canglang blocked the country's gates and humiliated Beiyan with three questions, she suddenly appeared and slapped her in the face in public: "Marriage? You are not worth the price of three thousand war horses." From a prisoner to a guest doctor, from Mr. Hongwenguan to the "craftsman god" who will serve as a general supervisor. He made money by brewing wine, weaving nets with Tingyulou, and using advanced knowledge to innovate the world's armaments, making the Northern Cavalry the best in the world. The prince regarded him as a pawn, Emperor Yan treated him coldly at first, and the southern Chu country secretly assassinated him again and again. Until the war broke out again in the north, and two hundred thousand wolf cavalry came for him alone. The newly married Ji Yue took the sword and smiled at the empress beside him: "Don't be afraid, I'll be back as soon as I go." ——He's going here to let the world know what a dimensionality reduction attack is. "Wisdom is the bone, iron and blood are the edge. See how modern engineering crushes the ancient battlefield, and Proton will eventually become the master of the world."