A giant panda cub nicknamed "Yuanzai" practices rolling in Taipei Zoo in Taiwan on Sept 18, 2013. Yuanzai, who was born on July 6 this year, is the first cub born to Yuan Yuan, and her mate Tuan Tuan, who were gifts to Taiwan from the Chinese mainland in 2008. [Photo/Xinhua]

A work dismantles the old parts of a steel furnace in Baoshan Iron & Steel Co., Ltd. in Shanghai on Sept 19, 2013. The steel furnace has burnt for 19 years since it was put into operation in 1994 and it was extinguished in September for examination and reparation. [Photo/Xinhua]