Si Dae adjusted the black-rimmed glasses on the bridge of his nose for the third time. When his fingertips brushed across the plastic cover of "A Study of Xia and Shang Bronze Decorations," the library closing reminder sound leaked out from the radio, with the unique hum of an old-fashioned loudspeaker. The glass of the borrowing desk in front of him reflected the fading dusk outside the window, and also reflected his washed-white blue overalls - the standard equipment for "junior librarians" in the municipal library. On the work badge pinned to his chest, the three characters "Si Da Goose" were smudged by the printer's ink dots, like a clumsy duck.