Starting at Tumu Fortress, the System Lets Me Conquer the World

I transmigrated, but not to quite the right place. Tumu Fortress, where 200,000 Ming troops were buried, and Emperor Zhu Qizhen's very own monument to shame. And I, Zhang Ye, was one of those 200,000 cannon fodder. The army would be wiped out in just three days! “Ding! Host is on the brink of death. The Black-Tech Army-Building System has awakened!” “Option A: Kneel and surrender, and be rewarded with a lifetime of shame!” “Option B: Fight back, and be rewarded with a hand-cranked generator, plus the beginner bonus: an electromagnetic rifle blueprint!” Was there even a choice? I was rebelling! From the start, I built a generator and cobbled together an electromagnetic gun overnight! When the Oirat's strongest warrior charged into battle in three layers of heavy armor, Zhang Ye silently raised his gun. “Whoosh!” A flash of blue light, and man and horse were instantly vaporized! The whole battlefield fell silent! From that moment on, the times had changed. Build cannons, smelt steel, climb the tech tree! While other ministers were still arguing themselves red in the face over factional strife, the first-generation steam tank was already rolling out of Zhang Ye's arsenal. While Zhu Qizhen was still debating whether to move the capital south, Zhang Ye's airship corps had already descended on the Oirat royal court and captured Esen! Years later, atop the Forbidden City, Zhang Ye surveyed his industrial empire with a can of cola in one hand and the empress in the other. “This Ming Dynasty, no, this whole world, is mine to rule!”