Definitions from Unihan Copyright © 1991-2015 Unicode® Inc. All rights reserved.

炉火 * * + +
炉火纯青 * * + +

炉 fireplace, stove, oven, furnace

火 fire, flame / burn / anger, rage

纯 pure, clean, simple

青 blue, green, black / young

from CC-CEDICT under a Creative Commons Attribution-Share Alike 3.0 License

爐火' + 炉火 * * + the fire of a stove /
爐火純青' + 炉火纯青 * * + lit. the stove fire has turned bright green (allusion to Daoist alchemy) (idiom)/ fig. (of an art, a technique etc) brought to the point of perfection

FrameNet Data Release 1.6 by http://framenet.icsi.berkeley.edu licensed under a Creative Commons Attribution 3.0 Unported License

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Wordnet Translations:

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

03343560-n

Translations::

Copyright MultiWordNet 1.39

Copyright: 2005-2010 CWN group, Academia Sinica

WordNet 3.0 Copyright 2006 by Princeton University.

WOLF (Wordnet Libre du Français) Copyright: 2011 NICT

FinnWordNet Copyright 2012-2014 by the Department of Modern Languages, University of Helsinki.

GermaNet version 10.0: German part of the ILI

Multiwordnet Spanish Human Language Technology Group Copyright (c) 2014

Thai WordNet Copyright: 2011 NICT

炉火 +

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