C3772 Old Piles of Paper

Gloomy, dark, huge library, all the bookshelves... They were all made of dark wood, and the walls were made of black crystals. All the bookshelves were over a hundred stories tall, reaching up to eighty zhang. There were densely packed books, some of them were made of paper, some of them were made of crystal runes. There were wooden slips, stone steles, and everything else