Ma Huateng, chairman and chief executive officer of Tencent Holdings Ltd, delivers a speech during the 2017 China International Big Data Industry Expo at Guiyang International Eco-Conference Center on May 28, 2017 in Guiyang, Southwest China's Guizhou province. Tencent (www.QQ.com) is the largest Chinese web portal in China. [Photo/VCG]
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