The Apocalypse Is Coming, I Have a Sky Fortress

[Apocalyptic system + infinite evolution + base construction + stocking up + super powers + easy and funny] When the end came, Lin Chen awakened the [Sky Fortress System] and owned a sky fortress that was continuously upgraded and built. Lin Chen: "If I see a beautiful woman, I will save her! If I see a zombie, I will kill him!" … System: [Ding, trigger the initial mission: Savior] Lin Chen: "Are you kidding me? Wouldn't it be nice if I saved a few beauties and guarded my flying fortress? Why should I be a savior?" System: [The task has been issued, the host has no right to refuse] Lin Chen: "…………" The zombie virus continues to evolve, and the survivors' awakened powers continue to become stronger. Only Lin Chen is killing zombies and building infrastructure. Lin Chen: "Come on and hit the workers, it's up to me to upgrade the fortress!" A few years later, when Lin Chen drove a sky fortress hundreds of kilometers long and appeared in front of the zombie virus mother body, his brain as big as a mountain of zombie virus mother body couldn't figure out what on earth this thing was?