purgatory

to refine with fire

to extract (ore, minerals etc); to refine; to purify; to process

(of Taoists) to practice austerities; to practice asceticism

to refine; to smelt

to refine (a substance); to purify; to refine (one's skills, writing etc); refined; polished; succinct; skilled; capable

to smelt metal

variant of 凝練|凝练[ning2 lian4]

variant of 洗練|洗练[xi3 lian4]

(fig.) to temper; to forge; to toughen (through hardship or repeated trials)

to parch and refine medicinal herbs

to concoct pills of immortality

to condense milk (by evaporation); condensed milk

(chemistry) to refine

to refine; refining (e.g. oil, chemicals etc)

to polish a phrase

condensed milk

to craft one's words

to refine crude oil; to render animal fat

coking; the process of producing coke from coal

a delicacy (food)

to make steel; steelmaking

smelting iron

to smelt

variant of 磨練|磨练[mo2 lian4]

variant of 簡練|简练[jian3 lian4]

to forge (metal); (fig.) to toughen sb up; to hone (one's skills)

a furnace for smelting metal

maker of immortality pill; concocting magic pills

oil refinery

coking furnace

alchemy

steel mill

iron foundry

high-grade well-tempered steel

refinery

physical exercise

after hard work and numerous revisions (idiom); the vicissitudes of life

to spend a long time thinking about sth while unable to reach a decision

alchemist

to be tempered into a steel

True gold fears no fire. (idiom)