Chen Liang, third right, from Zhenjiang of Jiangsu province serves during the Equestrian Awards Ceremony at the London Olympics on July 31, 2012. Like many overseas students from China, Chen, who is studying at Oxford University, volunteered to work for the 2012 London Olympic Games. He is the etiquette guide for the Equestrian and the Modern Pentathlon competition and will continue to volunteer at the following Paralympics Games. [Photo/asianewsphoto]

Chen Liang from Zhenjiang of Jiangsu province shows a medal during a volunteer training camp at the London Olympic Games on June 22, 2012. [Photo/asianewsphoto]