Catastrophe, My Immune System Becomes Institutionalized

The cataclysm began, and human civilization almost ended. A generation of sacrifices led to the establishment of five fire bases deep in the interior. The fortresses with countless bones buried in them are now the protection given to those who come after us. Hope, dawn, waiting. Discover, observe, explore, analyze, and utilize. People waited silently until a mechanical sound came from deep underground. "It is discovered that foreign germs have been recorded, and the immune system is fully activated" "Cleanup process started" "Defense, surveillance, self-stabilization" Zhang Yifan signed his name on the transparent board in front of him and became a scavenger walking on the earth.