I gave this a mysterious title, but it refers to a book made by folding a single, unbound sheet of paper, known in Japanese ...
The largest concertina book measures 848.78 m² (9,136 ft² 27.58 in²) and was achieved by Guo Kaige (China) in Xiangyun Temple, Anshan, Liaoning, China, on 1 August 2026 The concertina book is ...
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