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.