King of Junk in the Apocalypse, I Am Just a Scrap Collector.

Wu Ming, a migrant worker from the old world, was reborn in a new world more than a hundred years after the planet's catastrophe. Culture, knowledge, resources, and environment are all different, but only humans continue. Wu Ming, who grew up in a scrapyard, relied on the knowledge of the old world to become the king of junk in the new world. While others drank nutrient solution to survive, he was cooking braised beef. Other people's entertainment activities are only reading, writing, and drawing, but he hides at home and plays with his handheld computer. While others work hard and earn thousands of dollars a month, he already has ten zeros in savings. Lighters, bicycles, flashlights, Walkmans and other waste products from the old world were all turned into treasures in his hands and became popular in the new world. Mutated creatures attack, and he saves the world with Gatling. When famine struck, he grew large tracts of potatoes. Collecting scraps, selling arms, working as a scholar, and as a chef, who is he? Wu Ming smiled and said: "I am just a waste collector." This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.