China's Yi Siling holds her gold medal at the victory ceremony after winning the women's 10m air rifle final competition at the London 2012 Olympic Games in the Royal Artillery Barracks at Woolwich in southeast London July 28, 2012. [Photo/Agencies]

Gold medallist China's Yi Siling (C), silver medallist Poland's Sylwia Bogacka (L) and bronze medallist China's Yu Dan pose with their medals at the victory ceremony after the women's 10m air rifle final competition at the London 2012 Olympic Games in the Royal Artillery Barracks at Woolwich in southeast London July 28, 2012. [Photo/Agencies]