三国时,蜀国有一个名叫蒲元的铁匠,他打出的农具、刀叉好使、漂亮,但就是使用时间不长.一天,蒲元打出了一把新刀,一试,还是发软,只得加火重打.烧红的刀出炉以后,他呆呆地望了半天,刚要打,手中的刀已经冷却变硬了.蒲元眼睛一亮,心想:“如果让它凉得再快些,会不会变得更硬呢?”蒲元想到这儿,抱着试一试的想法,把刀又重新烧红后直接扔到了水里.蒲元拿着冷却后的刀向试刀铁砍去,只 Three Kingdoms, Shu has a blacksmith named Pu Yuan, he hit the tools, knives and forks, beautiful, but is not used for a long time one day, Pu Yuan hit a new knife, a try, or soft, Only after the fire redo.Burn the red knife was released, he stared blankly for a long time, just to be hit, the hands of the knife has cooled and hardened .Poo yuan eyes lit, thinking: "If it is cool Pursuit of ideas, put the knife again after the red-hot and threw directly into the water. Pu Yuan took the knife after cooling Cut the knife iron cut, only