Smog is pictured over the National Stadi

Smog is pictured over the National Stadium or 'Birds Nest' in Beijing on August 13, 2008, on day 5 of the 2008 Beijing Olympic Games. China erupted Wednesday when its women won their first team gymnastics Olympic gold medal, with swimmer Pang Jiaying adding to the elation by claiming an unexpected swimming bronze. Emotions also spilled over on the badminton courts with defending women's champion Zhang Ning breaking down in tears after coming through a mammoth quarter-final against Chinese-born Pi Hongyan of France 21-8, 19-21, 21-19. AFP PHOTO/PHILIPPE HUGUEN (Photo credit should read PHILIPPE HUGUEN/AFP via Getty Images)