In the world after nuclear war, knowledge professor Lu Guanyue became the "technological archaeological captain" of the underground civilization. He taught kids calculus using cans and transformed a nuclear reactor into a steampunk generator. When the mutant creature "Bone Digger" attacked, he took out his homemade electromagnetic crossbow: "This is called the power of science." Teammate Tang Mingzhe looked at the monster scorched by steam: "Professor, do you call this 'gentle transformation'?" In the ruined library, he stroked the yellowed documents: "The fire of civilization is never in the ruins." When the last line of formula was engraved in the "New Fire Code", Lu Guanyue smiled at the new generation: "Now, it is your turn to light up the next era."
