Global Shelter: My Shelter Can Be Upgraded Unlimited

A global disaster is coming, cold currents freeze the world, solar flares erupt, and all kinds of unknown alien beasts and zombies from outer space are rampaging across the blue star. As soon as Qin Yuan traveled to this world, he was bound to the shelter. In this world, everyone will be bound to a shelter. If you want to survive, you must build your own shelter to resist disasters! Fortunately, Qin Yuan turned on the krypton gold system. By killing monsters and gaining survival points, he can upgrade his shelter infinitely! Drop! The steel kitchen knife is upgraded to a laser sword! Drop! The chemical protective suit is upgraded to a giant mecha! Drop! The RV is upgraded to a heavily armored tank! Drop! The iron door is upgraded to a laser split door! Ps: This book is a post-apocalyptic survival text. Upgrade all items in the shelter to resist the catastrophe! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.