Shen Yan, a modern military-industry PhD, is caught in an accidental explosion and transmigrates to the late Southern Song. He becomes the useless illegitimate son of the General Who Guards the Nation’s household, where everyone can push him around. He’s no good at letters or arms, his mother died young, his legitimate elder brother bullies him, and the whole household treats him like worthless mud.
Just then, Mongol cavalry invades, the Great Song teeters on the brink, its armaments have fallen into disrepair, and its armies suffer defeat after defeat.
Shen Yan awakens an arsenal of military engineering expertise. He improves crossbows, forges firearms, and crafts divine weapons, using modern technology to sweep through the chaotic age. From a lowly illegitimate son, he rises step by step to become the Song’s master craftsman and guardian, turning the tide and defeating powerful enemies. He also wins Qing Yuan’s heart.
But gradually, he discovers that his transmigration was no accident...
