Lin Mu, a national-level chief engineer, died in the line of duty and became an 18-year-old boy who was about to starve to death in the wasteland. There is only a 15-square-meter "ant-level" scrapping platform around me, with only 72 hours of energy left. But for him – enough was enough. Discarded bearings, broken springs, and corroded steel plates are magic weapons in his hands. The "wolf-level" platform of rogue bandits? A sharp turn and centrifugal force on the steel cable directly crush the opponent's power shaft. While others were picking up rubbish, he was rubbing his hands in the rubbish pile to create nuclear fusion. When the doomsday plate began to tear apart the earth and all the survivors were running for their lives, he broadcast a sentence: "The land is polluted, but civilization does not have to take root. If you want to leave, get on the boat." Starting from a 15-square-meter iron box, build a mobile ark that will never dock.