The Life of Two People Hoarding Books After the Apocalypse of the Flood

[Hard-core engineering male and female protagonist] [Urban Pirate Group VS Party and Mass Service Center] At the end of the flood, the entire city became a sea. By constantly hoarding books and accumulating knowledge and technology, the male and female protagonists participate in rebuilding the apocalyptic version of the party-mass service center on the ruins, and confront the urban pirate group formed in collusion with the villain school bully.