微火

zhè zhǒng zài wēi huǒ shang hōng kǎo chu lai de tiě huà yì shù pǐn shì cǎi yòng le jiǔ yǐ shī chuán de gōng yì jì shù zhì zào chu lai de

这种在微火上烘烤出来的铁画艺术品，是采用了久已失传的工艺技术制造出来的。

This "iron painting", a kind of art work roasted on slow fire, is made with technology lost for a long time.