The Genius Mechanic of the Doomsday Mecha

In the future world, technology once promised infinite prosperity to mankind, but it has brought about deeper divisions. AI has replaced most occupations, and countless people have fallen into the shadow of unemployment; out-of-control environmental pollution and strong solar radiation have swept the world, causing frequent mutation disasters. In order to survive, humans have to rely on protective mechas - they are not only fortresses to isolate radiation, but also the only weapons against external crises. However, mechas did not become everyone's salvation. The rich monopolize 90% of the world's resources. They live in an ecotopia called "Greenland", enjoy pure water, safe food, top-notch medical care, and are even equipped with the most advanced mechas. Their life is like a paradise in the end of the world. The poor, unable to afford protection, could only pick up abandoned mecha remains in the ruins and kill each other for a pair of damaged armor. Radiated sewage, brain-eating insects, mutation and death... Are their daily reality. The protagonist Su Jin was once a genius mechanic, but was expelled from the "Green Land" due to a frame-up by his colleagues and became a wanderer. Only when he stepped out of the shelter did he truly see the cruel face of this world. Until he met Li Deng, a genius controller whose body was full of ulcers due to a damaged mecha. The person who should have been abandoned by fate was like a beacon, lighting up the way forward for Su Jin. No one would have thought that two down-and-out young people were about to set off a revolution that would engulf darkness...