The starship crashed and the wasteland survived. Before Xie Heng could feel sorry for his maintenance toolbox, he was blocked by scavengers in the ruins. What was waiting for him was a rusty machete and the words "hand over the supplies or die." But he just picked up the scrapped mechanical arm, and a blue light flashed at his fingertips - the next second, the scavenger was blasted thirty meters away with his knife. The overlords of the entire wasteland were laughing at this "repaired rag" until Xie Heng used a pile of garbage to weld an alloy exoskeleton, punched the modified tank over, and then removed the mutant beast's spine and installed it on himself. They finally knelt down and begged him: "Boss, can you help me maintain my mecha?"