A customer selects books on a smart bookshelf which can sense the book taken and automatically play introductions at a bookstore in Wuxing District of Huzhou City, east China's Zhejiang Province, April 22, 2021. The bookstore located in an old residence recently offers a service of "listening to books" with audio book devices. Readers can scan a QR code to listen to books and check the latest updates. [Photo/Xinhua]
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