Bao Bao, one of the National Zoo’s prized giant pandas, has officially left Washington D.C. for a new home in China. The 3-year-old panda was on a flight from Dulles International Airport in Virginia to the city of Chengdu, China on Tuesday afternoon. The move is part of a cooperative breeding program between the National Zoo and the China Wildlife Conservation Association that mandates all cubs born in the U.S.