Disaster strikes, order collapses, and survivors struggle in despair. Su Changqing relied on his superb mechanical transformation technology to transform an abandoned subway station into an underground safety city. He does not cultivate special powers, but specializes in technology. He uses scrap steel to build defensive barriers and uses water purification devices to ensure survival water sources. In the crisis-ridden wasteland, he lit the first human lamp, and used his wisdom and hands to build an indestructible line of defense for his compatriots.
