Giant panda Bao Bao enjoys her birthday cake at the China Conservation and Research Center for Giant Pandas in Dujiangyan City, southwest China's Sichuan Province, Aug. 23, 2017. The U.S.-born giant panda Bao Bao celebrates her fourth birthday on Aug. 23. Bao Bao was born in Washington and made her journey back China in this February. This is her first birthday back to China. Her "nanny daddy" and fans prepared a simple but sweet birthday party for her. (Xinhua/Yang Di)
