In the Wasteland, I Build a Nuclear Reactor by Hand

When AI's final line of code falls silent, the intelligent networks that sustain human civilization collapse. Cities fall silent, factories become piles of scrap, and the highly automated world turns into a maze of steel tombs beyond human understanding. Overnight, civilization is struck by “digital amnesia.” Yet for Si Nan, a top-tier enthusiast of “retro technology,” the global system crash unexpectedly unlocks the “hardcore mode” he has always dreamed of. While survivors despair before unresponsive touchscreens, he sees a world filled with mechanical behemoths waiting to be awakened. 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. To everyone else, he's a weirdo who repairs old equipment. To himself, he's the only priest who can speak with the “Old Ones.” With vacuum tubes and relays, he lights up an entire city. With a blueprint and a few levers, he restarts a ten-thousand-ton hydraulic press. He even uses a hand crank and a difference engine to make a stranded ocean liner sound its era-shattering whistle once more. He has no superpowers. His only “cheat” is the knowledge of mechanical principles and analog circuit diagrams engraved deep in his soul. In this wasteland where AI is dead, he is the one and only mechanical god who can awaken the “Old Ones” and make them crown him once more.