"Twelve?"

"I really forged it twelve times!"

Emi Yanagi looked at the backs of the two men in the firelight, and her heart was extremely shocked, the sky had turned white, and it was more than ten hours, and she could really survive it?

"Prepare to hide Kenshin!"

Su Yuan looked at the three-foot golden light, pure as one, without the slightest impurity, and said in a deep voice: "One foot and three inches on the right, give me the sledgehammer!"

Xu Kui's hands kept trembling, but he gritted his teeth, and was just about to desperately pick up the big hammer, Su Yuan stepped forward and grabbed it in a few steps, and said softly: "You rest, let me come at the end!"

Su Yuan picked up the sledgehammer and asked Xu Kui to fix the sword embryo with force, which was now the most critical step to decide whether the sword could be invulnerable.

"This is it!"

Squinting at the three-foot sword blade, the golden light is shining, extremely rich, only one place is slightly dim, this is where the sword heart is.

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

Emi Yanagi held her breath and stared, looking at the position where Su Yuan kept hitting, she was very shocked in her heart, and she didn't understand how to determine where Kenshin was?

Before coming to Longquan, he didn't care about this kind of legend at all, but after countless times during this time, it has been proved that the sword heart and sword bones really exist, especially the sword heart, which is the key to determining the life and death of the sword.

After following Su Yuan for just a week, he felt more and more that the other party was unfathomable, whether it was the ancient method of oil quenching, or covering the earth and burning the blade, or even judging the sword heart, it was a realm that ordinary people could not imagine.

He was born in a famous family, he has seen a lot of things, and he has studied with a master, but he has never seen a person who can be compared with Su Yuan, and he has become more and more determined to apprentice.

This point has a greater impact on Xu Kui, who has seen the magic of the ancient method of oil quenching, and now he has personally experienced the mystery of hiding the sword heart, and his heart is surging and excited.

As a senior master, his vision is much more profound than that of Emi Yanagi, especially when the whole audience participates in it, Su Yuan's every move contains deep meaning, which makes him have endless memories.

Force, angle, frequency, the combination is an indescribable special rhythm, exuding a mysterious charm, the most shocking thing is the ability to accurately grasp the details, no matter when, Su Yuan seems to be able to see through everything.

Everything around him had nothing to do with Su Yuan, as if he had entered some kind of mysterious realm, thoughtless, only the sword embryo in his eyes, and even had a feeling of sharing his fate with the same breath.

Every time he hit the sword heart, the golden light became more intense, and a clear sound sounded in his ears, as if the sword responded comfortably, the originally dim sword heart cast sword was bright, and I don't know how long it took, suddenly the entire sword body burst out with dazzling light.

"It's done!"

Su Yuan was overjoyed, put down the hammer, and looked at the pure sword embryo, the whole body was as pure as water, there was no difference, and the sword heart disappeared completely!

Why is it that only a sword with a homogeneous texture is a good blade, because all sword fighting techniques in the world have a law, that is, choose the shortest distance to attack the opponent and choose the shortest distance to defend.

Therefore, in the sword fight, the spacing of the position is designed to be very stingy, and in sword fighting, the requirement of defense is to block or dodge the opponent's sword edge while making it as close to oneself as possible, preferably from one's sleeve or ear.

This means that the opponent will be very close to you, and you will have the shortest counterattack route. Due to the close proximity between the two sides, you can also use some tricks to make the opponent who has no time to regain his strength collide with his own blade.

However, if you use a sword with an uneven texture, you may lose this valuable distance at a critical moment, because the surface tension of the uneven texture of the sword is poor, and if an uneven place happens to be used to block, the sword will lose its due tension and will not be able to bounce off the opponent's sword, thus losing that little bit of distance and being hit by the opponent.

Therefore, in physics, a good sword must have a uniform texture full of tension, and the denser the texture, the better the tension performance.

Originally, the structure of the traditional sword was made by wrapping a soft core iron with low carbon content by using a high-hardness bladed steel with a high carbon content and a leather iron to make a blade with a low carbon content.

However, Baotou steel will consume a lot of manpower and material resources, so from the Song Dynasty, the mainstream sword adopts a cheaper steel embedding technology, that is, an iron blade is inlaid with a blade steel at the cutting edge.

The advantage is that it is possible to quickly and cheaply equip the army on a large scale, but the quality of the sword gradually lags behind. Since then, only a very small number of swords still use steel-clad technology, but the island nation has retained the traditional steel-clad technology, which is one of the reasons why it can become a top-notch sword.

"What a clear blade!"

Seeing Su Yuan's satisfied expression, Xu Kui and Emi Yanagi hurried forward, looking at the sword body in front of them that was as clear as water, dumbfounded, it was so clear without polishing?

Su Yuan held the sword embryo, and a great sense of accomplishment occurred in his heart, and the clarity of the sword blade best reflected the confidence and decisiveness of the swordsmith in his own skills when operating, and he would never drag mud and water when he was out of the fire and into the water.

Clarity also means that the performance of the entire blade in battle will be agile and agile, and when paired with the opponent's two swords, you can have a keen insight into the opponent's intentions.

At the same time, it also means that the blade is of excellent steel quality, and it has strong penetration when slashing. Uniformity and continuity of the entire cutting edge, and flawless continuity provide excellent tension and communication of the cutting edge. When hitting a target, the force of the swordsman can be accurately transmitted to the target without compromise.

Kenshin Hide,

Sharp!

"Good sword!" Xu Kui took the sword embryo with both hands, and the weight was unexpectedly light, only about two catties and six taels at most. It feels very good in the hand, and it is sharp, even if it is not polished, it can be loved.

"The blade is mostly a group fight, accounting for 1/2 to 2/3 of the total width of the sword body, and it is mostly forged with flowing water to increase the traction and bending resistance of the whole knife. ”

"It's ...... Dumbfounded!"

Emi Yanagi stared at the faint pattern on the sword embryo and said in surprise: "I have seen similar textures in the national treasure prefect Zeng Mihu Toru , but it doesn't look like ......"

Su Yuan smiled and said nothing, in his eyes, the sword embryo was like a jade, the surface was covered with a layer of stone shell, and only by completing all the processes could it completely bloom with all its brilliance.

"That's it for today, everyone have a good rest, and we will continue tomorrow. ”

After hearing this, Xu Kui breathed a sigh of relief, his body softened, and he sat directly on the ground, not wanting to move. Su Yuan was also sore all over, and sat on the stool for more than ten hours, which would have been abolished long ago if he had been replaced by someone else.

"Master and senior brother rest early, and I'll prepare breakfast tomorrow. Emi Yagyu also had a sore feeling all over her body, especially her body was full of stinky sweat, so she quickly said goodbye and went back to take a shower.

Su Yuan waved his hand, looking at Xu Kui, who was already snoring on the ground, he really didn't have the strength to move the stupid big man, so he could only cover the quilt, return to the room with difficulty, and fall asleep.