A working staff member sterilizes the living environment of giant panda at the Bifeng Gorge Base of China Conservation and Research Center for the Giant Panda (CCRCGP) in Ya'an City, southwest China's Sichuan Province, Jan. 8, 2014. The CCRCGP has done lots of canine distemper control and prevention work recently to make sure the safety of giant panda population. (Xinhua/Xue Yubin)
