Athletes compete in the cycling session of the 2017 STC Triathlon Series held in the Guiyang-Anshun New Area in Guizhou province on Aug 13. [Photo by Lu Zhijia/xinhuanet.com]

Participants compete in the swimming section of the 2017 STC Triathlon Series held in the Guiyang-Anshun New Area in Guizhou province on Aug 13. [Photo by Lu Zhijia/xinhuanet.com]