Musicians perform at Haichang Polar Ocean World in Tianjin municipality, Sept 17, 2013. The ocean park formed the "ocean band" ahead of Mid-Autumn Festival to attract visitors. However, given the limited conditions, music for the band's shows will be pre-recorded. [Photo/Xinhua]

Water skiers take part in training for the upcoming National water-skiing championship 2013 in Zhangjiajie, Central China's Hunan province, Sept 17. [Photo/Xinhua]