National Survival: You Actually Engage in Tower Defense?

God comes and the global population is transported to a survival world. In this world, there are zombies coming like a tide, and there are also zombies that are invulnerable. There are also ferocious beasts bigger than Mount Tai, as well as strange monsters with extraordinary abilities. After coming to the survival world, Lu Yang awakened the tower defense system and could build unlimited defense towers! Primary Arrow Tower and Synthetic Heavenly Master Sword Tower! The Tianshi Sword Tower can be combined into a Demon Suppressing Tower! The Demon Suppressing Tower can be combined into the Immortal Killing Sword Tower! While others were still struggling to survive and the best were being eliminated, Lu Yang had already activated the map-clearing mode, leaving no grass growing wherever he passed! Tiandao: "Everyone else is trying to survive, but you are the only one doing tower defense?" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.