Doomsday Cabin: Keeping the Key to Restart Civilization

In 2029, the alien civilization "Grey Eater" plundered the earth's resources and reduced the surface to ruins. Li Boxin, a former electronic engineer, activated the ancient metal ball on the eve of the disaster, and was guided by the artificial intelligence "keykeeper" to hide in an underground cabin. After thirty years of forbearance to survive, he restarted the power grid, agriculture and communications, and gradually rebuilt the fire of civilization. Keykeeping is not alien technology, but an ecological backup program left before the last round of human destruction. When interstellar navigation became a reality, he led the survivors to counterattack the home star and uncovered the truth about the reincarnation of civilization. From being alone at the end of the world to lighting up thousands of lights in the sea of ​​stars, he is the keeper of the key and the starting point of a new civilization.