Sun Yang, Chinese Olympic champion and world-record-holding swimmer from Zhejiang province at the cultural performance of the opening ceremony of the 14th FINA World Swimming Championships (25m) in Hangzhou, capital of East China's Zhejiang province, on Dec 11. [Photo/zjol.com.cn]

Chinese Olympic swimmer Ye Shiwen from Zhejiang province takes an oath at the opening ceremony of the 14th FINA World Swimming Championships (25m) in Hangzhou, capital of East China's Zhejiang province, on Dec 11. [Photo/zjol.com.cn]