A tunnel composed of hundreds of thousands of LED lights attracts citizens to enjoy the cool at a scenic spot in Chengdu, southwest China's Sichuan Province, July 8, 2017. (Photo: China News Service/Zhang Lang)
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A tunnel composed of hundreds of thousands of LED lights attracts citizens to enjoy the cool at a scenic spot in Chengdu, southwest China's Sichuan Province, July 8, 2017. (Photo: China News Service/Zhang Lang)
