The 8-year-old twin sisters read a book in a library in Liaocheng University in Jiaozhou, east China's Shandong Province, April 23, 2017. The World Book Day falls on Sunday. (Xinhua/Wang Zhaomai)
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The 8-year-old twin sisters read a book in a library in Liaocheng University in Jiaozhou, east China's Shandong Province, April 23, 2017. The World Book Day falls on Sunday. (Xinhua/Wang Zhaomai)
