My name is Chen Tiezhu. I’m a twenty-first-century mechanical engineer, but when I open my eyes, I’ve become Li Yunlong, commander of an independent regiment in the twenty-sixth year of the Republic of China. My memories are a mess, my troops are scattered, starving bodies litter northwest Shanxi, the Japanese occupy the county seat, and ordinary people are treated like weeds. I have no System, only the modern military engineering knowledge in my head. With guns and ammunition in short supply, I draw up plans for homemade mines and smelt steel in iron pots. The Japanese have electric knives, and Manchukuo is developing rockets: their technology is far beyond what history records. Relying on my mechanical database, I start with a single bullet, modifying guns, building cannons, and setting up an arsenal. Every step is a gamble with my life, and every inch of progress is stained with blood. In this chaotic age, I don’t believe in fate. I believe only in calculation and craftsmanship. From Cangyun Ridge to the Yalu River, I fight a hundred battles and win them all, determined to set the crooked course of technological development straight and protect the land behind me.
