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![CHINA-CHANGSHA-CHINA-AFRICA TRADE EXPO-EXHIBITION HALL (CN)](138182113_15617240594651n.jpg)
Visitors try masks at the booth of the Republic of Ghana during the China-Africa Economic and Trade Expo in Changsha, central China's Hunan Province, June 28, 2019. The exhibition hall of the expo opened to public on Friday and Saturday. (Xinhua/Xue Yuge)