qì huà
to vaporize
evaporation
carburetion
氣|气[qi4] transformation in TCM (i.e. transformation of yin yang vital breath)
unvoicing of voiced consonant
lǐ qì huà tán
(TCM) to rectify 氣|气[qi4] and transform phlegm
páng guāng qì huà
bladder 氣|气[qi4] transformation in TCM