Photo taken on May 18, 2017 shows the view of "Oi!", a place for art exchange, in Hong Kong, south China. This year marks the 20th anniversary of Hong Kong's return to the motherland. (Xinhua/Liu Yun)
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Photo taken on May 18, 2017 shows the view of "Oi!", a place for art exchange, in Hong Kong, south China. This year marks the 20th anniversary of Hong Kong's return to the motherland. (Xinhua/Liu Yun)
