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A visitor takes pictures of a light installation in a park during the Lights On Romania festival in Bucharest, Romania, on Dec. 10, 2021. (Photo by Cristian Cristel/Xinhua)
A light installation is exhibited on a boat in a park during the Lights On Romania festival in Bucharest, Romania, on Dec. 10, 2021. (Photo by Cristian Cristel/Xinhua)
A light installation is exhibited in a park during the Lights On Romania festival in Bucharest, Romania, on Dec. 10, 2021. (Photo by Cristian Cristel/Xinhua)
