Xu Kui's expression was shocked, he took a deep breath, grabbed the sledgehammer with both hands, and looked at the reddish meteorite with all his attention, waiting for Su Yuan's next command.

Su Yuan looked at the fiery red meteorite iron that had been forged into more than a foot long, and the golden light flowed in it, and the impurities on the surface were basically removed, but there were still dots of black inside, and at this time, it needed to be folded repeatedly and forged many times.

"This is it!"

Su Yuan stared at the golden light tightly, and suddenly his right hand was raised high, and the small hammer quickly hit the upper middle position, which was the folding point.

Xu Kui shouted, his arms were bruised, and he raised the hammer and hit it hard at the place where the small hammer fell.

"Go on!"

Su Yuan raised the small hammer again and kept hitting the folding point to correct the angle and position. As the sledgehammer fell again and again, the meteorite was broken in two, and the upper and lower pieces were tightly pressed together.

"Into the furnace!"

"Boost the wind!"

Su Yuan hurriedly put the meteorite into the flames, instructed Emi Yanagi to increase the wind, picked up the big bowl next to him, drank it all, and finally breathed a sigh of relief.

"It's so cool!" Xu Kui drank two bowls of water in a row, sweating profusely, and said excitedly: "It's really exciting, I've never fought such a resilient guy!"

Su Yuan took the wet towel sent by Huimei, wiped off the sweat, and said with a smile: "It's just the first time to fold it, save some strength, and output it evenly in the future." ”

"The first three times you use a group to fight, the back to change the water, and the last one to use the horse's teeth, try to evenly distribute the carbon and hide the sword heart!"

Xu Kui comprehended, with an excited expression on his face, hiding the sword heart, this is the secret of the top masters.

Emi Yanagi looked at Su Yuan's slender and strong muscles, and said with a slightly red face: "Master, this time you want to use pure steel to cast a sword?

Su Yuan waved his hand, looked at the meteorite in the flames, and explained: "After forging, it has been determined that the meteorite is very tough, and it can be elastic enough without clamping steel, and the focus below is still folding, my goal is at least twelve times!"

"Twelve times!" Emi Yanagi took a deep breath and said in surprise: "Ten times is already the 2048th floor, twelve times ......"

Su Yuan looked at Xu Kui's tower-like body and joked, "If you don't fight twelve times, do you think you can be worthy of this guy's brute strength?"

Xu Kui laughed, thumped his chest hard, and said confidently: "Don't worry, it's not like I haven't beaten twelve times, this time the master took it, and it was very easy." ”

Emi Yanagi looked at the state of the two talking and laughing, and secretly smacked her tongue, what a monster!

Under normal circumstances, at least half an hour, or even an hour, and a maximum of 15 minutes in the furnace, it is necessary to continue forging. The whole process has to be done in one go, without interruption.

Twelve times, that means two people need to thrash for more than ten hours!

Thousands of times by the fire at a height of forty or fifty degrees, struck with a hammer thousands of times, it can be imagined that the test of the limit of the body is simply not human!

"Let's go!"

"Group fight!"

The golden light in the furnace became more and more brilliant, Su Yuan quickly took out the meteoric iron with iron tongs, put it on the iron felt, and began to fold and forge for the second time, sparks splashed everywhere, and passion flowed.

The Song people's meticulous "Cloud and Smoke Passing Through the Eyes" recorded: grate knife one, its iron are fine flowers, the cloud is a silver piece of fine cutting, and the iron sheet is finely cut like silk hair, and then the group hits ten thousand mallets, which is a natural flower.

Mingren Cao Zhao's "Gegu Yao": Iron out of the West, there are spiral snail flowers on the face, there are sesame snowflakes, where the sword is polished and clean, with gold alum, its flowers are seen.

After more than forty minutes, the meteorite iron folded for the second time entered the furnace again, the golden light became more and more intense, and the black impurities gradually decreased, which was the biggest advantage of folding and forging for thousands of years.

"Go on!"

After more than ten minutes of rest, the third time he started, Su Yuan kept hitting the impurities with a small hammer, and let Xu Kui's sledgehammer hit hard, removing the false and retaining the true, leaving only the purest part.

"Swap water!"

The fourth folding does not use group beating, but is replaced by flowing water forging with higher process requirements, the thickness of the flowing water, and there is a return at the sharp tip, which is the key to polishing the blade and the tip of the sword.

The real mystery of its performance lies in the small serration of the blade, and the bite force is very large.

Legend has it that the ashes of teeth, hair and nitrate are divided into equal parts, and the edge of the knife is like a sawtooth with vinegar, and the sharpening is not the same scale as the remaining iron, which is the only strong.

"Start quenching!"

Hearing Su Yuan's order, everyone cheered up, and Emi Yanagi looked at the cold spring of the earth's veins that emitted cool air, and her heart immediately rose to her throat.

Su Yuan picked up the meteoric iron that was more than a foot long, looked at the bright golden light of the sword forged in the flames, and waited for the most suitable time, the way of quenching lies in an instant, success or failure in this move.

"It's now!"

A dazzling golden light suddenly erupted in front of Su Yuan's eyes, and he quickly picked up the meteoric iron, and with lightning speed, he directly inserted it into the cold spring well water, only to see the green smoke steaming in an instant, like a fire pouring oil, and the explosions were everywhere.

In just less than two seconds, Su Yuan watched as the dazzling golden light was instantly suppressed by the cold cold spring, and a clear sound of meteorite seemed to sound in his ears, and the two heavens of ice and fire seemed to be reborn and reborn.

"Keep fighting!"

Jingling...... Jingling...... Jingling......

Xu Kui has long been ready to go, and he keeps hitting with a sledgehammer, and after a rapid cooling, now is the critical moment to test the steel, not to mention the use of cold spring water, which is more than ten degrees lower than ordinary.

Heat treatment is one of the important processes in sword manufacturing, which is related to the soul of sword performance. That is, it does not change the shape of the sword itself and the overall chemical composition, but by changing the internal microstructure, or changing the chemical composition of the surface, giving or improving the use performance, the quenching process can see the level of a swordsmith.

In a split second

Millimeter,

Like a white horse passing through a gap,

Fleeting,

The life and death of a sword,

Look at it all in just two seconds!