Accordion book

An accordion book (Chinese: 經摺裝, pinyin: Jīngzhé zhuāng, Japanese: 折り本, rōmaji: Orihon) codex—a historic precursor to modern books—with an accordion-folded structure, which is known also as concertina binding.

Originating in China during the Tang Dynasty (618 - 907), the accordion-fold format evolved as an alternative to scrolls, making texts easier to handle and read. In particular, this form of binding was widely used for Buddhist scriptures, calligraphy, and illustrated works. This format also spread to Japan and Korea with the importation of Buddhism.