Qing Gong (also spelled Ching Gung) is a qigong / martial arts technique for making the body extremely light in weight, by altering the distribution and flow of qi
. (Think of the fighting scenes in Jet Li’s films “Crouching Tiger, Hidden Dragon” or “Hero.”)
For instance: in the latter half of this video clip
we see Master Zhou Ting-Jue demonstrating his Qing Gong skill.
In relation to the Hindu yoga traditions, a similar power of "lightness" (Sanskrit: laghiman)is described in Patanjali's Yoga Sutras (III:45).