Volunteers pose for a photo during a farewell party in the Nanjing Olympic Sports Center Stadium during the Nanjing 2014 Youth Olympic Games in Nanjing, capital of east China's Jiangsu Province, on Aug. 25, 2014. (Xinhua/Shen Peng)
Volunteers celebrate during a farewell party in the Nanjing Olympic Sports Center Stadium during the Nanjing 2014 Youth Olympic Games in Nanjing, capital of east China's Jiangsu Province, on Aug. 25, 2014. (Xinhua/Shen Peng)
Volunteers and journalists pose for a photo together during a farewell party in the Nanjing Olympic Sports Center Stadium during the Nanjing 2014 Youth Olympic Games in Nanjing, capital of east China's Jiangsu Province, on Aug. 25, 2014. (Xinhua/Shen Peng)
Volunteers take selfies during a farewell party in the Nanjing Olympic Sports Center Stadium during the Nanjing 2014 Youth Olympic Games in Nanjing, capital of east China's Jiangsu Province, on Aug. 25, 2014. (Xinhua/Shen Peng)
A volunteer is tossed up during a farewell party in the Nanjing Olympic Sports Center Stadium during the Nanjing 2014 Youth Olympic Games in Nanjing, capital of east China's Jiangsu Province, on Aug. 25, 2014. (Xinhua/Shen Peng)
Volunteers pose for a photo during a farewell party in the Nanjing Olympic Sports Center Stadium during the Nanjing 2014 Youth Olympic Games in Nanjing, capital of east China's Jiangsu Province, on Aug. 25, 2014. (Xinhua/Shen Peng)
