Sosimhan Chaekbang is a small bookshop in the village of Jongdal-ri, Jeju, selling independent publications, picture books, and books about Jeju. The bookseller curates the selection with handwritten recommendation notes attached to each chosen book, and the shop also sells Jeju postcards and small items. A "hidden book" corner displays books with only a description of the contents, hiding the title and author, so customers can guess and choose. The shop holds many books and its classification labels are not easy to spot, making it difficult to find a specific book.