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Newly published books (bottom C) by the Chinese University of Hong Kong Press, a collection of documents by the late Chinese Party chief Zhao Ziyang, along with a photo of him (centre L), are displayed at the Hong Kong Book Fair on July 20, 2016. Hong Kong's feisty publishing industry vowed to take on China by selling books critical of Beijing, despite the disappearances of five city booksellers, as a major annual book fair began on July 20. / AFP / Anthony WALLACE (Photo credit should read ANTHONY WALLACE/AFP/Getty Images)

Newly published books (bottom C) by the Chinese University of Hong Kong Press, a collection of documents by the late Chinese Party chief Zhao Ziyang, along with a photo of him (centre L), are displayed at the Hong Kong Book Fair on July 20, 2016. Hong Kong's feisty publishing industry vowed to take on China by selling books critical of Beijing, despite the disappearances of five city booksellers, as a major annual book fair began on July 20. / AFP / Anthony WALLACE (Photo credit should read ANTHONY WALLACE/AFP/Getty Images)
Getty Images

AFP ANTHONY WALLACE