Quadruplets, from left, Sun Changtao, Sun Changling, Sun Changfeng, Sun Changyu, pose for a photo after being recruited by the conscription office of Shizhong distrcit in Jinan, East China's Shandong province, Dec 12, 2010. The quadruplets, born in February 1992, have been receiving public assistance and attention. [Photo/Xinhua]