Gray Doomsday

[In 2022, the world will die from meteorites sliding across the sky] The "fallen dust" fell to the surface, and the steel and technology that civilization was proud of instantly disintegrated into dark red residue. Animals are extinct, humans have collectively mutated into zombies, metal is no longer reliable, and we have returned to the age of cold weapons. Faced with zombies all over the mountains and plains that may mutate at any time, where is the way to survive? Meteorites bring despair but also hope. Perhaps the strange stone pillars full of strange patterns bring about the so-called "system" that can continue to sustain the human fire, or is it another more sinister conspiracy?