If I Can't Cultivate Immortality, I'll Build a Mecha

Yang Ping, a young man from a mountain village without spiritual roots, brought with him the memory of technology from the 63rd century and awakened in Yangjia Village, which was used as a blood food breeding ground by demons. He abandoned the path to immortality, made steel, guns, and power stations, used the industrial system to build a human fortress, and led the villagers to kill immortals twice. Looking for energy, he met a tiger demon girl and uncovered the past of his father's generation. They joined forces to kill the tree demon and build a dam, which also attracted the secret prying eyes of Jian Tiansi and the master. Technology has reversed the path of immortality, and the real war has just begun.