Panda diplomacy is back in the United States capital, as two panda bears Bao Li and Qing Bao arrived at the Washington Zoo on Tuesday. “Drum roll please!” the zoo posted on X, followed by emojis of three drums. “DC’s newest celebearities are HERE!” For the occasion, the zoo closed the panda habitat and surrounding exhibits, it said on its website. The two, 3-year-old animals travelled from the Chinese city of Chengdu, where they boarded a specially equipped FedEx cargo plane, called the Panda Express, according to US media reports. Panda Express also happens to be the name of a Chinese fast fo…