Bao LiKayla Bartkowski/Getty Images Tap Here To Add Us Weekly As A Trusted Source Add as a preferred source on Google Something exciting is unfolding at the Smithsonian's National Zoo in Washington, D.C. - and it involves two giant pandas who appear to be falling for each other. Bao Li and Qing Bao, both 4 years old, have been showing unmistakable signs of a budding romance. While they're not yet old enough to breed, their zookeepers say the flirtatious behavior is a promising development for the zoo's giant panda conservation program.