Parents bring their children back from hospital where they find out that their children have been tested abnormal blood lead levels in Qingyuan, South China's Guangdong province on December 25, 2009. 44 children living in the residential area of Yinyuan Industrial Zone in Qingyuan city have showed abnormal blood lead leavels after medical tests. Qingyuan city authorities have found out the sickness is linked to the pollution from a battery factory in the Zone, and say they will look into the case and tighten the supervision of the battery factory. [CFP]