炉火纯青 lúhuǒchúnqīng to reach perfection Origin Definitions Defs Strokes Stroke Words Sentences Sents 炉火 爐火 lúhuǒ alchemy the art of alchemy or compounding elixirs as practiced in Daoist traditions纯 純 chún skillful skillful; practiced; well versed青 qīng noun blue blue; the color of the clear sky, as in 青天 qīngtiān