腾云 is most familiar from the four-character idiom
腾云驾雾 (ride clouds and mount mist) describing the supernatural travel of immortals and most famously of
孙悟空 (Sun Wukong, the Monkey King) in
《西游记》 (Journey to the West), whose
筋斗云 (somersault cloud) covers 108,000 li in a single leap.
