云 is short for
云南 (Yunnan) and
贵 for
贵州 (Guizhou), two neighbouring provinces often named as a pair, as in
云贵高原 (the Yunnan-Guizhou Plateau). Their cooking leans sour and hot. Well-known dishes include
酸汤鱼 (fish in sour soup) from Guizhou, and
过桥米线 (crossing-the-bridge rice noodles) and
汽锅鸡 (steam-pot chicken) from Yunnan.
