The picture taken on August 15, 2014 shows the night scenic view of Nanjing Sports Centre in Nanjing, capital of east China's Jiangsu Province. The Opening ceremony of Nanjing 2014 Youth Olympic Games will be held on Aug. 16, 2014. (Xinhua/Zhao Ge)

The picture taken on August 15, 2014 shows the night scenic view of Nanjing Sports Centre in Nanjing, capital of east China's Jiangsu Province. The Opening ceremony of Nanjing 2014 Youth Olympic Games will be held on Aug. 16, 2014. (Xinhua/Guo Cheng)

The picture taken on August 15, 2014 shows the night scenic view of the Youth Olympic Village of Nanjing 2014 Youth Olympic Games in Nanjing, capital of east China's Jiangsu Province. The Opening ceremony of Nanjing 2014 Youth Olympic Games will be held on Aug. 16, 2014. (Xinhua/Song Zhenping)