In the apocalypse, I have a flying house with unlimited upgrades.

In a world ravaged by a mysterious catastrophe, humanity's second chance at life turns into a desperate struggle for survival. The emergence of hordes of mutated zombies, impervious to conventional attacks, forces the reborn to confront an even greater threat. As walls of unprecedented height fail to contain the undead hordes, a glimmer of hope appears in the form of a mysterious floating fortress. Xu Shuai, an unsuspecting individual, unexpectedly acquires a flying house, which can be infinitely upgraded, allowing him to develop potions to enhance his physique, new weapons, and special combat suits. With his flying house, Xu expands his territory, increases his altitude, cultivates crops, raises animals, recruits talented individuals, and sounds the horn of counterattack, forging a new path in this post-apocalyptic world.