The nanomachine swarm's rampage was one of the sparks that led to this planet's civilization collapsing. It had once been classified as forbidden technology, too, but the world was unpredictable. The spark that had once ignited war had now become the last lifeline humanity was forced to rely on. Global war had destroyed the original production system and pushed the planet's ecosystem to the brink of extinction. With more and more people drawn into the flames of war, the old agricultural and industrial models could no longer support human survival. Thus, the nanomachine swarms were reactivated. After a series of safety improvements that were better than nothing, they became the foundation of human survival. They provided food, air, medical care, and the basis of industry. Eighty to ninety percent of the people in this world now barely survived under the nanomachine swarms' nourishment.
The scientists who had invented the nanomachine swarms had finally achieved their long-held wish: the swarms reshaped the entire society, took over every task from environmental maintenance to industry, and became this planet's new lifeline—but only after civilization had collapsed.
"In this godforsaken place, being a doctor doesn't require much skill." The middle-aged woman watched a small window on the syringe and casually spoke after confirming that the nanomachine swarm had begun working. "All we need to know is how to use a syringe and amputate limbs. If neither measure works, people can only leave it to fate. But I guess things were better in the city-state where you originally lived? I heard extreme conservatives—naturals—occupied the last few natural environment zones in the world. Did your food even grow out of the ground?"
Facing her curious gaze, Hao Ren could only brush her off. "Uh... more or less. But I've already left that place, and I don't