Gold medalist Nicholas Santos (C) of Brazil, silver medalist Chad le Clos (L) and bronze medalist Dylan Carter of Trinidad and Tobago pose for photo during the awarding ceremony of Men's 50m Butterfly Final at 14th FINA World Swimming Championships (25m) in Hangzhou, east China's Zhejiang Province, on Dec. 15, 2018. Nicholas Santos claimed the title with a new Championship Record of 21.81 seconds. (Xinhua/Wang Lili)