Apocalyptic Entries to Build a Top Slave Fortress

[Global Survival+Castle Slave+Gold Entry+Fighting Fun+Multiple Female Hosts+Absolute Obedience] The end of the world is coming, Lin Feng awakens the god-level construction system Automatic armor, Kevlar explosion-proof clothing, batarangs, three-dimensional mobile devices, Iron Man Mark armor series, drones, fortress camps, and offshore platforms can all be constructed. Fusion formula Ten square meters of house + doubled area = 300 square meters of luxury house Ten square meters of cabin + medical facilities + doubled area = small clinic Small clinic*10=general hospital Factory building + farmland = food processing factory Hospital + canteen + dormitory = small population community Small population community*300=Doomsday city-state [Flying Hook: Can shuttle through buildings regardless of terrain, extremely tough] [Batmobile: Reinforced tracks, can pass through trenches, deep water and other special terrains, can climb 90-degree walls, and activate the noose to pull giant buildings such as houses and buildings] [Integrated cattle farm: can accommodate 20,000 milkmaids and produce millions of tons of milk every day] [Super large general hospital: can accommodate 10,000 pregnant women for surgeries at the same time]