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File photo taken on May 25, 2017 shows a demonstration center of Guizhou big data pilot zone in Guiyang, southwest China's Guizhou Province. (Xinhua/Liu Xu)
File photo taken on May 25, 2017 shows a demonstration center of Guizhou big data pilot zone in Guiyang, southwest China's Guizhou Province. (Xinhua/Liu Xu)