Animal keepers of Smithsonian's National Zoo carry bamboo for giant panda Bao Bao's inflight meal as she leaves the zoo en route back to China, in Washington D.C., the United States, Feb. 21, 2017. American-born giant panda Bao Bao will arrive in southwest China's Sichuan Province Wednesday night (Beijing time). (Xinhua/Yin Bogu)