Doomsday Sign-In: a Hundredfold Increase, My Refuge

Zombies are rampant and the world has fallen. Retired soldier Wang Lin Yue activated the mysterious [Civilization Fire System] in his ancestral home. While others are struggling to survive in the apocalypse, he can sign in every day and obtain blueprints for various black technologies: from automated fortresses to super crops, from exoskeleton armor to aerial battleships! While other survivors were still fighting for a piece of bread, Lin Yue had already lit up the technology tree and built the only paradise in the apocalypse. When villains and cults try to prey on the weak, the torrent of mechas under his command has crushed all barbarism and injustice. When a devastating zombie wave engulfed the city, his fortress became the last beacon of human civilization, and even the remaining national forces had to seek cooperation from him. However, Lin Yue gradually discovered that behind this apocalyptic catastrophe, there was actually a terrifying conspiracy against the entire earth's civilization. Zombies, mutations, natural disasters... Are all just the prelude to a cruel "test". Facing the indifferent judgment of a higher civilization, Lin Yue stood on the ruins, holding the technological fire of the entire civilization, and declared to the star sea: "This time, human civilization will be protected by me! Our life and death are not decided by you!" This is an epic story that begins in a shelter and ultimately leads human civilization to the stars and the sea.