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A light artwork is seen during the 2017 Festival of Lights in Lyon, France, Dec. 7, 2017. The four-day Festival of Lights kicked off on Thursday. (Xinhua/Chen Yichen)
A light artwork is seen during the 2017 Festival of Lights in Lyon, France, Dec. 7, 2017. The four-day Festival of Lights kicked off on Thursday. (Xinhua/Chen Yichen)