Giant panda Beibei celebrates 2-year-old birthday in U.S.

Giant panda Beibei is seen beside its birthday cake during a celebration at Smithsonian's National Zoo in Washington D.C., the United States, Aug. 22, 2017. The zoo on Tuesday held a celebration for giant panda Beibei's two-year-old birthday, which attracted lots of visitors. (Xinhua/Yang Chenglin)