Thousands of years of cold iron is extremely rare, can be described as extremely precious, and this kind of cold iron is only produced in extremely cold places, itself has a very high coldness, if you want to melt it, you need a very high temperature casting, and the temperature control needs to be extremely accurate, a slight deviation, will make the cold of the cold iron itself is burned.

"The sword body of this remnant ice sword is light and thin, and now I want to cool it down, but it has become a problem, if it is directly placed in ice water to cool quickly, the alternation of cold and heat is too rapid, I am afraid that it will break, if it is cooled slowly, this light and thin sword body is afraid that it will be out of shape in the process of cooling." The person in charge is also quite a headache, this remnant ice sword has already been forged, but because the sword body is too thin, it has not been able to find a cooling method of time, and it has dragged on for a few days, if it drags on again, I am afraid that the characteristics in the cold iron will be damaged.

Moreover, this sword body is too light and thin, and it is already very difficult to build it at one time, and even the same batch of forgers dare not guarantee that they can create the same sword.

"Ye girl, if it's up to you to look at it, what method is better to cool down this remnant ice sword?" The person in charge suddenly asked Ye Qingtang.

Ye Qingtang did not respond immediately.

The inquiry, which attracted the attention of the swordsmiths who were arguing, subconsciously turned their heads and looked at the person in charge of the inquiry.

I thought that the person who could ask for advice in charge must be a forging senior, but I didn't want to......

What they saw turned out to be a fifteen or sixteen-year-old girl.

At that moment, the faces of those forgers fell.

How many forging skills can such a yellow-haired girl know?

However, they only regarded it as the person in charge and then asked, and did not hold out much hope, so they turned their heads and continued to discuss.

Ye Qingtang looked at the remnant ice sword for a while, hesitated for a moment before slowly saying: "Ice water is easy to break, warm water is easy to change, if you use frost to condense water, maybe it's okay." ”

"Frost water?" The person in charge was slightly stunned.

Frost water is not water in nature, but more like a thick liquid, which is very cohesive, has a certain toughness, and has a very low temperature and high heat resistance.

Frost condensation, which is generally used by them for wide charging gloves, can be temporarily used as a filling and shaping material at high temperatures because it will not be evaporated.

But......

Frost condensation to cool weapons, he had never heard of before.

The one in charge fell into hesitation.

Ye Qingtang's words attracted the attention of those forgers, and they all looked at Ye Qingtang, their eyes full of disapproval.

"Little girl, don't talk nonsense if you don't understand, how can frost condensate be used for cooling? What are you kidding. A forger spoke in displeasure.

Although the condensate water does not evaporate, it is extremely thermally conductive, so it is quickly transmitted by hot objects to a straight high temperature, and there is no way to maintain a temperature sufficient to cool the blade.

Those forgers only thought that this girl was a little ghost who didn't know the way, and the advice she gave was like a joke.

Ye Qingtang shrugged her shoulders and didn't argue anything, anyway, the remnant ice sword was not hers, she just answered what she was talking about.

The remnant ice sword must be cooled today, and everyone couldn't think of a suitable way at all, so the person in charge looked at Ye Qingtang thoughtfully, and then said: "Ye girl, if this matter is done by you, how sure are you?" ”