Leading athletes Colin Ray Jackson, Michael Johnson and Mike Powel attend an event to mark the 100-day countdown to the IAAF World Championships Beijing 2015 at the National Stadium, or the Bird's Nest, in Beijing, China, May 14, 2015. Two ambassadors of the championships - World indoor long jump silver medallist Li Jinzhe and world and Olympic shot put bronze medallist Gong Lijia- also attended the event. (Photo: China News Service/Fu Tian)
