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Photo taken on March 14, 2018 shows a piece of amber product during the "Amber Trip" exhibition in Vilnius, Lithuania. The four-day exhibition kicked off on Wednesday. (Xinhua/Alfredas Pliadis)
Photo taken on March 14, 2018 shows a piece of amber product during the "Amber Trip" exhibition in Vilnius, Lithuania. The four-day exhibition kicked off on Wednesday. (Xinhua/Alfredas Pliadis)