Deputy Chef de Mission of the Pre-Games Training Camp of the Chinese delegation Sun Yuanfu speaks during a press conference at Esporte Clube Pinheiros in Sao Paulo, Brazil, July 30, 2016. Chinese athletes has arrived at Sao Paulo's Esporte Clube Pinheiros, the pre-games training center of the Chinese Olympic delegation for the upcoming Rio Olympic Games. (Xinhua/Xu Zijian)