Seven-year-old Xuanxuan gets distracted in class as his mother, Yuan, helps him focus at a special education school in Ningxiang county, Changsha, Hunan province on Dec 10, 2012. The 35-year-old Yuan goes to school with her son, who has attention-deficit hyperactivity disorder and other learning disabilities. [Photo/Asianewsphoto]

Two elite SWAT officers display their combat skills during a competition in Urumqi, Northwest China's Xinjiang Uygur autonomous region on Dec 10, 2012. Some 288 police officers from 24 SWAT units across Xinjiang Uygur autonomous region will compete in the region’s first SWAT force military skills competition which started on Monday and will last four days. [Photo/Xinhua]