Giant Panda twin cubs Fu Feng and Fu Ban, which were born on August 7, 2016, are seen in their enclosure at Schoenbrunn Zoo in Vienna, Austria, March 23, 2017. (Photo/Agencies)
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Giant Panda twin cubs Fu Feng and Fu Ban, which were born on August 7, 2016, are seen in their enclosure at Schoenbrunn Zoo in Vienna, Austria, March 23, 2017. (Photo/Agencies)