The Lost Common Sense of the Wasteland Is All in My Head

After the Great Annihilation, people in the future will regard the multiplication table as an oracle and the lever principle as a miracle. Yan Yi woke up from the old world, with the lost common sense of all mankind in his mind: filtering water, generating electricity, identifying poisonous weeds, and calculating ratios. While teaching the wastelanders literacy and arithmetic, he also dismantled the superior "artifact" into after-school exercises. But when knowledge becomes the most valuable thing, Jingmo will want to erase him, Black Iron City wants to absorb him, and the black box left behind in the old world is slowly opening one eye. This is the story of a living library that rekindles the fire of civilization in the wasteland.