The End of the World: the Beginning of the School Beauty's Dormitory, Drinking Toilet Water

Apocalypse+Rebirth+Hoarding of supplies+Enter various houses for adventure+Later-stage farming construction When the doomsday comes, houses all over the world are stacked on top of each other infinitely, forming an infinitely tall building! Humans must not leave the building! Those who leave will die! There are limited resources in the building, so you must plunder if you want to stay alive! Plunder! But you have to be careful! Because when you enter a house, what greets you may not be the clear water in the toilet, but a terrifying sneak attack! —————— Jiang Chen was reborn, In his last life, he woke up from the school beauty's dormitory and foolishly led the school beauty to survive, protecting her along the way. However, he was stabbed to death in the back by the school beauty and his classmates, and all his supplies were taken away! In this life, he must live well! He will not let go of anyone who betrays him! (Ps: Finding a cat may be a good thing, because it can not only ease your lonely journey, but also become an emergency food when you are hungry... Maybe... The same is true for people?) (This is not the kind of doomsday novel that focuses on gathering materials. In the middle and later stages, it pays more attention to exploration and collection, and builds its own base to become more and more secure and rich. So it should be considered a doomsday farming style? If you mind, please comment~)