After the World Went Offline, I Became the Server

When a "solar flare" strikes, the sun's fury melts humanity's digital paradise. The world loses power, and all data is wiped. In a single night, the civilization we took pride in is formatted, and 99% of human knowledge becomes unreadable gibberish. This is an "Information Stone Age" more desperate than the actual Stone Age, because we've forgotten how to light the first fire. Based on the content above, create a novel title of no more than 15 characters. Make it exciting and appealing to mainstream young readers today. Before the disaster, Cheng Zai was an IT nerd dismissed as a "freak." His only hobby was "digital hoarding." He obsessively engraved everything he considered "useful", from farming techniques and mechanical principles to medical diagrams and historical texts, onto several specially made "eternal discs" made of quartz glass. While the leader of the survivors is fighting over a moldy loaf of bread, Cheng Zai is using his one surviving, hand-cranked reading device to look up "how to culture yeast and bake bread." While the bravest warriors suffer and die from an infected little wound, Cheng Zai produces a hand-drawn "simple guide to culturing penicillin." While everyone believes that muscle and brute force are the world's only remaining sources of power, Cheng Zai quietly sketches the first "internal combustion engine design" in the dirt. He is no warrior, but he is the most powerful arsenal of this age. He is no king, but he holds the only key to rebuilding civilization. Anchored by knowledge, he reestablishes the coordinates of "civilization" in this forgotten sea and presses the "restart" button with his own hands.