Li Jinzhe, an ambassador of IAAF World Championships Beijing 2015 interacts with athlete Mike Powel during an event to mark the 100-day countdown to the championships at the National Stadium, or the Bird's Nest, in Beijing, China, May 14, 2015. Two ambassadors of the championships - Li Jinzhe and world and Olympic shot put bronze medallist Gong Lijia- also attended the event. (Photo: China News Service/Fu Tian)
