Scrap Metal Reborn

AD 2187 - Earth about 160 years ago. Human civilization has experienced the "third robot revolution". Intelligent agents are present in every corner of the city. From the most sophisticated medical and surgical robots to cumbersome city cleaning units, robots of different levels form the backbone of social operation. Humans, a species that once regarded robots as "slaves" and "tools", have unconsciously entrusted their right to survival to the mechanical civilization they created after countless iterations. The city's oxygen supply, food synthesis, medical life support, and information circulation all rely on robot systems. In other words-human beings live in a greenhouse built by robots, but forget about the outside world.