The guests who were observing were surprised when they heard Cai Zhenhua's words, and they came forward one after another to see the molten iron ingot up close.

The silver iron ingot, with a natural color and a sparkling surface, looks free of the slightest impurity, giving people a sense of purity and peace.

However, careful people still found that the center of the iron ingot, hidden under the silver waves, there was an arc-shaped crack!

A hint of pride flashed in Master Ouyun's eyes, but he said with a look of regret: "After the iron ingot solidifies, if there is a crack on the surface, it can only mean that there are impurities in the material, so it causes fracture. It's a pity that this iron ingot, which has been smelted for four days, is a waste product!"

Everyone's expressions were different, either regretful or gloating, and An Zhisu's face was also a little gloomy.

It was he who worked hard to let Ye Changsheng cast the sword in the General Guild of Refiners, but he didn't expect that now that the materials for the continuous casting sword have not been melted and cast, there will be such a big problem.

Although it is still too late to overturn and start over, everyone's confidence in Ye Changsheng will inevitably be greatly discounted.

In case it takes time and effort, this sword will fail in the end, and the face of the Refiner Guild will not look good.

Everyone whispered and looked at Ye Changsheng.

Ye Changsheng smiled faintly and said to Liao Changhai: "Elder Liao, leave it to you to deal with." ”

Liao Changhai smiled, supported his limping legs, came to the iron ingot, and picked up a hammer.

When everyone didn't know why, Liao Changhai had already swung his hammer and smashed it the silver ingot.

As one of the eight sledgehammers of Nanfeng that year, Liao Changhai's hammer technique is superb and breathtaking.

Although his work is simple and repetitive, in the eyes of everyone, it has a natural beauty, and every crisp sound of the hammer is a consummation of a destiny.

The sound of thrashing, full of rhythm and rhyme, echoed in the hall, and everyone couldn't take their eyes off it, admiring Liao Changhai's movements while paying attention to the changes in the silver iron ingots.

The seven sword-forging masters looked puzzled, not knowing why Ye Changsheng gave such an order, let alone understanding the meaning of Liao Changhai's beating.

In their cognition, through the hammer beating, the impurities of the iron ingot can indeed be precipitated, but that is only the surface of the impurities.

Looking at the silver iron ingot, judging from the traces of fracture, it is clear that there is a problem with the internal material.

Such a big problem, even if it is the most clever beating in the world, I'm afraid it won't help, right?

Fortunately, the doubts in everyone's hearts did not last long, and the answers began to surface.

"That crack has expanded!" said one of the refiners, his eyes widened suddenly, and he said loudly.

Needless to say, everyone also saw that the arc-shaped crack was extending to both sides, and it was extending faster and faster.

However, when they saw the smooth sections of the iron ingots on both sides of the crack, they were amazed.

If it is due to impurities, shouldn't the shape of the crack be lightning-shaped, and the cross-sections on both sides of the crack should also have the burr feeling of metal tearing, right?

An Zhisu couldn't take his eyes off it, but a relaxed smile appeared on his face.

He looked up and saw that the high-ranking people who were observing looked calm and even smiling, and he couldn't help but feel ashamed in his heart.

Thinking about it, with people's eyesight and perception, I am afraid that I will know early on that there is nothing wrong with this iron ingot!

With a clanging sound, the crack on the surface of the iron ingot had extended halfway to both ends, forming a rounded and twisted arc.

At this point, the onlookers still didn't understand that this crack was clearly intentional by Ye Changsheng.

"Bang!"

Liao Changhai dropped the hammer for the last time, and the whole silver iron ingot suddenly made a crisp sound.

In everyone's astonished gaze, the silver iron ingot broke into two pieces along the twisted rift it had received!

Liao Changhai wiped the sweat from his forehead and stepped aside in a comfortable mood.

Ye Changsheng floated up from the wheelchair, walked to the iron ingot, and said leisurely: "Everyone, by controlling the cooling time of the molten iron, I divided them into two parts. The two decomposed iron ingots are not only the same in size, but also equal in weight. ”

When the answer was revealed, everyone couldn't help but let out a cry of amazement, so it was.

Looking at the two separate iron ingots, the silver light is round, and they are integrated, as if they are two independent individuals, and it is not at all like they have been decomposed from a single iron ingot.

Cai Zhenhua's face turned gloomy, and he couldn't help but snort coldly: "It's too much, wouldn't it be good to separate directly, what's the point of playing such flashy tricks?"

Ye Changsheng was not angry, and said lightly: "The two iron ingots, the solidification time is different, you can just see the changes under the temperature difference, and you can also see what the texture of the inside is, for a swordsmith, is it meaningless?"

In addition to Master Ouyun, the other six swordsmithing masters nodded their heads.

The two points that Ye Changsheng said are not only meaningful, but also significant.

By observing the cooling of the temperature difference of the molten iron and the expansion of the metal, it is possible to control the characteristics of the material in a more three-dimensional way.

This may not be much for a cast iron ingot, but it is an extremely important reference for the next step of casting.

The sword forging masters secretly sighed, this Ye Changsheng is really powerful, others are taking one step at a time, lest they will fail in the current step.

As for Ye Changsheng, he had already seen the next step by taking a step, but this foresight compared the vast majority of swordsmiths.

If you were them, I am afraid that they may not be able to do better.

This also reflects Ye Changsheng's calmness in the melting and casting process, and calmness is often based on strong self-confidence.

A false alarm contributed to a rebound in the confidence of An Zhisu and other high-level refiners, who couldn't wait to see the next melting.

The entire sword-forging plan, Ye Changsheng had originally arranged it very closely, so he did not disappoint the spectators, and soon started the next round of casting.

"Record, five melts began. Ye Changsheng sat back in the wheelchair, looked at the blazing stove, and said loudly.

"Wait,"

Cai Zhenhua, who was unwilling to be lonely, suddenly interrupted, "Ye Changsheng, what kind of sword are you going to forge, can it be revealed now?"

The master did everything possible to get him in, just to let him destroy Ye Changsheng's sword.

What the master is not good to do, of course, it is his apprentice who will serve, not to mention that Ye Changsheng still has a grudge against him.

As for what those masters think of themselves, Cai Zhenhua doesn't care at all, anyway, a master is a master, and he probably won't surrender his identity, what do you have to do with him as a little swordsmith, right?

Ye Changsheng couldn't see the slightest hint of fireworks on his face, and said lightly: "I really should inform you that the legendary level long sword forged below is called Zixiao!"

(End of chapter)