In Xinhai City in 2077, wasteland engineer Lin Feng accidentally activated the "Red Alert Infrastructure System" originated from ancient civilization. When the light prism tower turned into the quantum curtain wall of the skyscraper, and the magnetic energy tank transformed into a subway shield machine, this rusty cyber city became his sandbox battlefield. He must navigate a two-line system: the open line uses base vehicle clusters to transform urban ruins, and the hidden line relies on engineering orders to weave a network of power to infiltrate the financial street. Every time the tower crane rises, the ancient underground gods may be awakened, and every kilometer of subway extension may trigger changes in the earth's veins. When nano-cores are extracted from the demolition ruins, and when construction waste is reorganized into deformed chariots, Lin Feng will lead his cyborg engineering team to write a steel epic about survival, betrayal and mechanical ascension in the reinforced concrete jungle - but the truth about the ancient sanctuary behind the system is quietly emerging with the closure of the cross-sea bridge.