I Can Walk Through Walls and Build Five Underground Fortresses at the End of the World

[Doomsday] + [Ice Age] + [Not the Holy Mother] + [Rise of monsters in the mid-to-late period] + [Male protagonist] When the sun suddenly disappears, the entire earth gradually enters an apocalyptic era that is colder than the Ice Age. Lin Xiu was reborn and returned to three months before the end. He foresaw the cat coin market, gained the ability to penetrate walls, and built an indestructible underground fortress. Using the fortress as a base and the spirit motorcycle as a vehicle, he can travel freely underground and become a veritable king of the underground in the doomsday world. A certain green tea: "Lin Xiu, let me in! I want to serve you well." The second generation of a top chaebol group: "Lin Xiu, where did you come from! Don't kill me! Dad! Grandpa! Please, I can give you all my wealth!" A member of the SEAL team: "TMD! Lin Xiu, you bastard is still raising monsters on the fortress!" … In the late days of the apocalypse, monsters that evolved rapidly in various extreme weather conditions began to run rampant, and humans also began to undergo some horrific changes. This change seems to be impossible to explain with technology. It is the power of God. [The first fifty chapters pave the way for the transition, and then enter the climax, so stay tuned...]