A large piece of copper ingot was lifted up and cut into two pieces in public.

The two large boxes of accessories were brought up and divided into two parts.

Two models of carts are placed on a long table, each of which is cut apart and left to be chosen by both sides.

Ye Changsheng handed over a list to Liu Bufan, asked him to extract the materials, and came to the long table in a wheelchair, picked out the three models of the sword handle, sword body, and sword body, and let people carry them to the long table on his side.

The copper ingots were sent to the furnace for heating, and Ye Changsheng took out the black carving knife unhurriedly and began to modify the model.

His approach surprised everyone, but made the model masters of the Swordsmith Guild very indignant.

The models used in the slashing sword are all carefully made by them, and they also fully take into account the expansion coefficient of the metal, so there is no need to correct it at all.

It's a pity that they were wrong, solemn not without opinions, but first prepared the materials, and then began to revise the model.

When he was revising, he was even more serious than Ye Changsheng!

At this time, Ye Changsheng selected some auxiliary materials and put them into the furnace.

He seemed careless, just grabbed a handful, then missed some more, put it in a small crucible, and finally sent it into the furnace, and poured it into the large crucible.

Bronze is not a single metal, but a mixture of tin and lead in pure copper to form an alloy, hence the bluish color.

Therefore, the melting point of bronze is lower than that of pure copper, and under the fire of the Spirit Gathering Circle, it will melt into copper water in a while.

Even the excipients that Ye Changsheng had added earlier were melted into the copper water.

Sitting in a wheelchair, Ye Changsheng squinted his eyes, observing the color of the flames and copper water.

At one point, he suddenly said, "Turn off the fire!"

Turn off the heat?

This is just the beginning, and you need to turn off the fire?

Mo Longfeng, who controlled the Spirit Gathering Array, froze for a moment, hurriedly activated the inscription, quickly lowered the flames, and finally completely extinguished them.

Everyone who knew how to do it was also shocked by Ye Changsheng's order, and they were surprised one by one.

The solemn face looked a little solemn, glanced at Ye Changsheng, and quickly retracted his gaze, paying attention to the furnace on his side.

Chen Laoji's eyes showed a hint of appreciation, looked at the girl beside him, and asked, "Girl, let me ask you, do you know what Ye Changsheng's intention is to turn off the fire?"

The girl with big eyes frowned and thought for a moment, and suddenly said in surprise: "I know, Ye Changsheng is going to add charcoal!"

Charcoaling?

The onlookers were puzzled for a moment, and then suddenly realized.

In ancient times, charcoal fire was used to heat metal, so the smelted metal liquid contained some charcoal components.

This time, the topic of the competition between the two sides is to see who casts the sword closer to the real thing, then the charcoal component in the sword body is indispensable.

But the problem came again, they all knew this truth, but Master Zhuang didn't understand it.

But why didn't Master Zhuang take the same measures?

Chen Laoji once again threw the question to the girl next to him.

The girl didn't think much about it, her eyes lit up and said, "Master Zhuang is actually doing subtraction, and then addition." ”

Do subtraction, then addition?

Mu Qingke smiled: "The girl is really Bingxue smart, Zhuang Zheng is now doing subtraction, he wants to reduce the tin and lead in bronze to the minimum, and then by adding two materials, including the composition of charcoal, in order to adjust the proportion of various elements in the copper water, and finally restore the casting material of the sword that year." ”

Glancing at Ye Changsheng, Mu Qingke continued: "But Ye Changsheng adopts another way of thinking, in the words of the old man, that is to increase or decrease on the spot. ”

As the name suggests, through real-time control, what is missing will be made up, and what is more will be reduced.

As far as operation is concerned, whether it is a solemn method or Ye Changsheng's method, it requires accurate judgment and a lot of calculations, but the difficulty of the two is different.

There is no doubt that the real-time increase and decrease adopted by Ye Changsheng is more difficult and requires more accurate judgment.

Everyone figured out the reason and looked at Ye Changsheng one after another, is this considered a master of the arts?

Sure enough, on Ye Changsheng's side, after the flames of the Spirit Gathering Array were extinguished, a swordsmith from the Rainforest Principality who had started immediately put the best silver silk charcoal into the bottom of the furnace and replaced the Spirit Gathering Array.

At this time, Liu Bufan returned to the venue with a large number of materials and placed dozens of boxes on the long table one by one.

Ye Changsheng did not shy away from it, and in front of everyone, he began to prepare purification elixirs.

However, his method is too fast, and he deliberately mixes some materials directly with powder, and even if he wants to steal it, he can't start it.

The prepared purification agent is directly sent to the furnace and poured into the boiling copper water, which makes a gurgling sound, and large bags appear on the surface of the copper water.

The smoke generated by impurities continues to flow out from the top of the furnace, and the copper water in the smelting is becoming more and more transparent.

Ye Changsheng sat in a wheelchair, intently observing the copper water in the smelting, countless thoughts probed into it, controlling every variable.

At some point, he ordered again: "Turn off the fire!"

Most of the charcoal fire was removed, and the Spirit Gathering Array was opened again, and the fire of spiritual power from the fire attribute spirit stone was burning, and the flames flooded the furnace and spread outward.

In Ye Changsheng's mind, countless pieces of data turned into columns, jumping rhythmically, and they were already close to his initial set value.

When the value of the copper water in the furnace was about to coincide with the set value in his mind, Ye Changsheng immediately ordered: "Reduce the fire by seven points!"

"Seven points to reduce the fire!"

Mo Longfeng hurriedly manipulated the Spirit Gathering Array, reducing the output of the fire to only three points.

Ye Changsheng looked at the two swordsmiths again: "You can prepare the sword fan." ”

The two swordsmiths nodded hurriedly, merging the dissected sword models, then tying them up and finally fixing them on several shelves.

The flames were reduced by two points again and turned into small fires.

The crucible in the furnace was taken out and quickly poured into the sword fan.

Without waiting for Jian Fan to cool down, the crucible carried the remaining copper water and was sent into the furnace again.

The onlookers were stunned, and only after a moment were shocked to realize that Ye Changsheng had completed a casting.

At this time, the copper in the solemn furnace is still being smelted, and not a single material has been added!

When solemnly began to add lead to the pure copper water, Ye Changsheng completed the second casting.

When solemnly began to add tin gold to the copper water, Ye Changsheng had already completed the synthesis casting!

When solemnly began to replenish the charcoal for the copper water, Ye Changsheng had already cast the hilt and body of the sword into a complete whole.

So far, only half a day has passed.

Ye Changsheng's clothes slashing sword, this is done?!