In addition to a traditional large furnace, the No. 6 Sword Forge Room also has a small furnace of special characteristics.

This furnace is a straight cylinder, one person is high, and there are many fire vents on the outer wall, and the flames are spewed out from the fire mouths, and the whole furnace is like a fire tree.

In the center of the furnace, a long spar hung vertically, and the spar, which had no attributes, was burned red by the flames at the moment, and the red light bloomed.

Two swordsmiths held special flame guns, the heads of which spewed out arrow-like flames, short and condensed, and swept towards the surface of the hedrons.

The spar that was originally in the process of melting was constantly peeling off under the cutting of the flame gun.

The outline of a sword is in rudimentary form.

Ye Changsheng came quietly and couldn't help but nod secretly.

The sixth swordsmithing room was converted into a temporary place for casting spar swords.

The order for the spar sword came from the largest Taoist temple in the provincial capital, Baiyun Temple.

Probably Zi Qianhao, the second shareholder, found out in conscience that he couldn't just take money, so he used his influence to get this order.

Although there are only ten handfuls, they are just used to practice.

After practicing your hands, you can take orders from Zixia Palace and even other Taoist temples.

For Wen Jiantang, casting spar swords is a completely new field, which has never been involved before, and there are no relevant talents.

This means that they have to start from scratch and accumulate little by little.

Entrusted with the important task were two senior swordsmiths, cautious, followed by seven or eight apprentices, one holding a small notebook, constantly making notes.

Just as the flames of the flame gun swept over the hedron again, the mutation protruded.

"Bang!"

The whole hedron is blown up!

The shattered hedron was wrapped in flames and molten colloids, flying around, striking people with a thumping sound.

Even though the swordsmiths and apprentices were wearing protective suits, they were so frightened that they retreated, and many of them let out screams.

The samurai who were guarding the side hurriedly stepped forward to extinguish the fire and treat the burned apprentice.

Two healing puppet apes stepped forward to treat the apprentices who were burned and unable to move.

In the midst of the busyness, everyone found out about the arrival of Ye Changsheng and his party, and hurriedly stepped forward to salute, embarrassed and ashamed.

This is the one hundred and thirty-first defeat they have experienced in three months.

Until now, they had not been able to forge a molded spar sword, but they had wasted countless materials.

The flame guns used by the two swordsmiths all have a lifespan, and they are basically scrapped in seven days.

The fire attribute crystals inlaid on the flame gun are all excellent materials, even more valuable than the flame gun itself.

As for the long spars that failed to be cast, there are countless of them, and the scrap has been piled up into a mountain.

The two swordsmiths didn't dare to think about this at all, and their hearts trembled when they thought about it.

How can the young hall master not feel ashamed that he has entrusted them with such a heavy responsibility, and has unreserved support in terms of manpower and material resources, but they have made no progress?

Ye Changsheng encouraged everyone a few words and explained: "Prepare, I will test it myself." ”

With that, he sat in a wheelchair, picked up the bound test records, and flipped through them page by page.

He didn't flip through it quickly, but it wasn't slow either, and after half an hour, he finished reading both thick booklets.

In front of the furnace, the test materials were already ready, and Ye Changsheng ordered a fire.

A half-human-high spar was sent into the furnace, and it was suddenly overwhelmed by raging flames.

Ye Changsheng slid forward in his wheelchair, squinting his eyes, observing the color of the flames and the changes in the transparency of the spar.

Most crystals, including metals, have a fixed melting point, and when the temperature is reached, they melt into a liquid at the same time.

The purpose of heating the spar with the furnace is to take out the spar immediately when it is about to reach the melting point of the spar, put it into the straight furnace, and continue to heat it.

Then use the high temperature of the flame gun to peel off the molten spar layer by layer, and finally shape the sword body.

It's easy to say, but it's hard to put it into practice.

Hedrons are already fragile, but when heated, they become even more fragile and extremely unstable internally.

Once the external force is greater than the amount it can bear, or the balance is broken by uneven heating, the hedron will shatter or even explode.

To put it simply, you need to maintain the balance of the hedron at all times throughout the casting process.

But if you get it wrong once, it will lead to the loss of your previous efforts.

The two swordsmiths tested it for more than three months, and it was not all without progress.

At least they have made very detailed records of several critical points in the temperature of the spar.

When the spar began to change color and there were signs of melting, Ye Changsheng gave an order, and the spar was quickly taken out of the furnace and hung in the straight-barreled furnace.

Ye Changsheng pushed the wheelchair forward, took a flame gun, squinted, and looked at the molten hedron.

At this time, the spar is like a heated cheese, and after the outer layer of spar melts, it turns into a liquid and slowly flows downward, rippling layers of ripples.

Suddenly, Ye Changsheng's gaze seemed to penetrate the surface of the spar and go straight inside!

The world inside a grand crystal was clearly presented in Ye Changsheng's mind.

Verdant bamboo, nothing more than like this,

Lush yellow flowers are all wonderful.

All things exist in their own nature, and they are immeasurably one.

It's for, synaesthesia!

Rolling magic sounds, shocking the soul, the mystery of "The Secret Record of the Demon Heart" flows through my mind.

Ye Changsheng's eyes flickered like a morning star.

Although everything in the world has thousands of images and changes, in the final analysis, it is still composed of the five elements.

As long as you grasp the essence, there is no difference between metal and spar.

The "Secret Record of the Demon Heart" of immortal cultivation has reached the second level of "subtlety" realm.

Through "subtlety", he can "see" the internal structure and veins of the metal, so why can't he "see" the internal structure and veins of the spar?

The realm of "synaesthesia" is the sublimation of the realm of "subtlety"!

Ye Changsheng was inexplicably excited, with the help of the "synaesthesia" realm, why couldn't he succeed?

The inner world of the hedron is a series of transparent dots, which are arranged into lines, which are combined into a three-dimensional formation, and finally present a parallelepiped-like structure.

Unlike the vein structure inside the metal, it is the lattice of these hexahedrons that make up the hexahedral structure.

Changsheng also discovered that those spars that melted into liquid were actually in hexahedron units, falling off in layers.

There is no doubt that he also had to follow this rule when using the flame gun to melt and cut in order to minimize the damage.

With enlightenment rising in his heart, Ye Changsheng opened the flame gun, and in the muzzle, an incomparably condensed flame erupted in an instant, spraying on the spar.

The heated hedron quickly falls off along its natural texture and structure, while it remains stable.

The prototype of a sword, outlined by Ye Changsheng's spray gun, gradually revealed!