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Photo taken on Dec. 10, 2019 shows the inside view of a light rail train in south China's Macao Special Administrative Region. The light rail in Macao opened to public on Tuesday. (Xinhua/Cheong Kam Ka)
 
 
Photo taken on Dec. 10, 2019 shows the inside view of a light rail train in south China's Macao Special Administrative Region. The light rail in Macao opened to public on Tuesday. (Xinhua/Cheong Kam Ka)