我国古代用火烧的办法辨别金的真假,这是人人皆知的.因此有句成语“真金不怕火炼”.但对古代试玉也用火烧,知道的人就不一定很多了.试玉为何用火烧呢?唐朝诗人白居易在他的著名诗篇《放言五首》中有“试玉要烧三日满,辨材须待七年期”之说,并且作者还自注“真玉烧三日不热.”按《淮南子·俶真》谓“钟山之玉,炊以炉炭,三日三夜而色泽不变.”由此看来试玉用火烧确有其事.至于为什么要用火 In ancient China, the method of using fire to distinguish between true and false of gold is well known, so there is an idiom “real gold is not afraid of fire refining.” However, the ancient trial of jade also uses fire to know not many people Why try the fire with it? The Tang Dynasty poet Bai Juyi in his famous poem “Five” in the “test jade to be burned three days, the material to be seven years,” said, and the author also Self-note “really Yu burned three days is not hot. ” According to “Huainanzi Zhen really” that “Zhongshan jade, cooking with charcoal, three days and nights and the color change.” Jade use the fire is true. As for why use fire