President Xi Jinping watches a grand gala marking the 20th anniversary of Hong Kong's return to China at Hong Kong Convention and Exhibition Center, in Hong Kong, June 30, 2017. [Photo/Xinhua]
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President Xi Jinping watches a grand gala marking the 20th anniversary of Hong Kong's return to China at Hong Kong Convention and Exhibition Center, in Hong Kong, June 30, 2017. [Photo/Xinhua]
