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Photographers shoot the Shenzhen - Hong Kong border in the Ma Tso Lung district of Hong Kong, China, on Thursday, June 8, 2017. Shenzhen is pivoting from its legacy as ground zero for China's manufacturing boom into a center for research, development and production of advanced technology. Photographer: Justin Chin/Bloomberg via Getty Images

Photographers shoot the Shenzhen - Hong Kong border in the Ma Tso Lung district of Hong Kong, China, on Thursday, June 8, 2017. Shenzhen is pivoting from its legacy as ground zero for China's manufacturing boom into a center for research, development and production of advanced technology. Photographer: Justin Chin/Bloomberg via Getty Images