National Survival: I Made Sky Fortress

Tens of billions of people around the world have descended into a wasteland world. In this world, civilization has been destroyed, mutants are rampant, and ferocious beasts are everywhere. If you want to survive, you must take risks to collect various supplies, compete with mutants for territory, and build a self-defense shelter. People are willing to sacrifice their lives for a sip of water and a sip of food. Jiang Bei found himself on a deserted island with no other supplies except the sea. At the same time, because his left arm was missing, he was ostracized and abandoned by others. In despair, he obtained the synthesis system of all things. With the materials, he can synthesize everything! [Consumption 1 wood, 3 stones] Make a stone axe! [Consumption of 100 steel plates, 40 synthetic plastics...] Make a mechanical exoskeleton! [Consumption of 1 million star metal ingots, 800,000 synthetic fibers, 50 million electronic parts...] To create a sky fortress. ... Who said it's hard to survive in the wasteland? Isn't it just eating hot pot, singing songs, watching girls dancing, and enjoying a vacation-like life?