The autumn water is the same color, the blade is like a dragon's tooth, and when it moves, the sky roars for a long time.

"Yes, yes!"

The old man was obviously excited, and his eyes lit up when he looked at the long sword...... It's scary.

After watching it for a while, he still resisted the urge to try it, and reluctantly returned the long sword to the sheath, and then carefully returned it to Lu Yu.

Lu Yu casually reached out and took it and hung it around his waist.

During this period, this thing accidentally hit the table next to it, and with a dinging sound, the old man gritted his teeth vigorously, and hurriedly said be careful.

Lu Yu really thought about it seriously for a while, and then said, "Senior, actually...... Basic forging method, Wu Lao's words...... Definitely know. ”

"Oh, yes, it's such a big thing, how could Red Nose not know......?

"So even if the old-timers learn the basic forging method, they may not be able to get back a few points from Wu Lao, or ...... In this way, I still have a craft here, so why don't I show it, if the old-timers want to see it......"

"I want to see it, I want to see it!"

Lu Yu didn't say that he would teach, although there was such a thing as a succession, but a young man really wanted to let an old man who was a scumbag treat himself as a master...... This mentality is a bit perverted.

With a wry smile, Lu Yu said: "Okay, please pay attention to the seniors, there are some things I learn, but I can't teach people, see as much as you want, if you want to ask me the details...... I only understand, I can only do it, but I don't know it, I can't explain it. ”

The old man said, "Okay, well, then do it." ”

Lu Yu smiled lightly, then looked left and right, and casually took a piece of the most ordinary metal, the type was like iron, but it was much denser than iron.

If you hold it in your hand and check it by the microscopic control method, you will know the characteristics of the whole metal, how hardness, ductility, toughness, melting point, and specific heat are ......

A fire is then lit and the metal is thrown into it.

While waiting for the cautery, he said, "This is a relatively ...... in the basic forging method Well, where the depth is high, it is quenching. ”

"Quenching? Oh, by the way, you Jiuxiao Dragon Yin, I heard that when it was forged before, it was obviously curved, everyone thought it was a scimitar, but in the process of quenching, it suddenly became straight, which is amazing!"

Lu Yu said: "That's right, quenching is actually a method of using the surface to change the microscopic, how to say? Any metal, in the small, has its own specific arrangement, according to the different these, it will also play different effects and roles." The way to change them is often through heating or cooling, quenching, is the use of rapid cooling, the metal is more hard, in short, it is to make it very brittle, brittle, sharp, not easy to roll the edge, the retention of the edge will become very good......"

Lu Yu talked a lot, explained the characteristics and importance of quenching, and also said the core principle, as for whether he could understand it or not, whether he could understand it, then Lu Yu didn't care.

Finally, the iron was red, Lu Yu took it out, and the small hammer was beaten wildly on it.

Nothing worked this time, just burning, beating, that's all.

Update V most}W fast on ZX=

Over and over again, especially in some places, Lu Yu beat it very strangely, obviously he had already beaten a piece of iron into a dough, like a pancake, but then he knocked it into a ball.

Well...... It's just a ball, back and forth, thrown into the stove three times in total, I don't know how long it took to knock it, but it's just a ball......

It doesn't look very round, but it looks like an oval, with pointy sides and a stick sticking out from underneath, which is very thin.

Everyone looked at this strange thing, and the old man couldn't help but ask, "Is this ...... Is it a hammer? There are a lot of people who like this weapon, the better of the blunt weapons. ”

Lu Yu smiled lightly and didn't say anything.

The old man couldn't bear the loneliness, and continued to ask, "But this thing ...... Does it have anything to do with quenching......? Since it is a hammer, it is better to have a little toughness, but if it is too hard, it is easy to break. ”

Lu Yu still didn't speak.

In this way, the old man was so itchy that he even rubbed his hands.

The teacher next to him looked at it, and couldn't help sighing, and secretly said that this Lu Yu is too bad at being a person, saying that he made a good skill, and then made such a thing......? It's too secretive. In fact, as long as you have a good relationship with this old man, isn't it true that Shuge can enter as soon as he wants? I didn't expect that the person who had always been generous suddenly became stingy, and wasted such a good opportunity, it was really ...... It's a pity.

I wanted to mention it, so I said, "That...... Xiao Yu, we don't understand this, otherwise...... Another one?"

Lu Yu smiled: "What you can't understand is valuable, isn't it?"

"This ......"

The corners of the teacher's eyes twitched twice, and he didn't bother to say anything.

At this moment, Lu Yu threw the iron ball into the furnace again, and this time it was the fourth time to enter the furnace.

However, Lu Yu's movements were a little strange, not just waiting for the iron ball to be burned red, but constantly spinning, making the iron ball look like a drill, which looked a little ridiculous.

Only the old man still looked at it for a moment, as if he was expecting something, and he was also constantly remembering, for fear of missing a subtle link.

The next moment, Lu Yu took out the iron ball, then looked at the pool next to him, and said, "This...... It is better to use energy, otherwise...... I'm afraid you can't see it clearly. ”

"Oh......"

The two of them subconsciously agreed, and the teaching was indifferent, but the old man stared at him with round eyes and looked at it seriously.

In fact......

These were not the only people present.

It's also a coincidence, Wu Lao is free today, so he wants to come over to the old man to ask for a glass of wine, this guy, because he controls the library, so his popularity is good, and there are many people who secretly give him some gifts.

This old man's favorite things in his life are two things, one is forging, needless to say, just like the more stinky his hands are playing chess, the more addicted he is, he is simply obsessed with forging. The other is wine.

No one has a way to send anything to the forging, so it's wine, good wine from all planets and all forces, he has it!

But when Wu Lao came over, he saw people from the junior college coming from a distance, in fact, he was going to leave, after all, if there are outsiders, there is such a thing as begging for a glass of wine...... Isn't it known? It's going to be humiliating.

But then I saw Lu Yu and Xiao Ruan being left behind, and then led to this factory......

What else is there to say about this? Naturally, it is...... Run over and take a peek.

So at this time, after Lu Yu finished saying that he wanted everyone to use their abilities to 'see', he also opened his eyes wide, looking at Lu Yu's movements with curiosity.

Lu Yu smiled lightly, and then said, "What's that...... Everyone, don't blink. ”

As he spoke, he stretched out his hand and waved it, and threw the 'hammer' directly into the sky, which is also strange, the front should have been heavier, and it should have been headed down, but this hammer was the thin stick below smoothly below, and then safely pierced directly into the water, and entered it with the iron ball.

The length calculated by Lu Yu was just right.

Immediately after the stick enters the water, it touches the bottom, and then pierces the bottom a little and fixes it entirely. As a result, half of the iron ball on it is dipped in the water and half is exposed......

It was at this moment that ......

The sound of water explosions was constant, quite harsh, and a burst of white mist rushed out, if it were not for the large enough factory building, I am afraid that it would fill the entire space.

And at this very moment......

Three guys with round eyes and the ability to see through the white mist......

I just saw it blankly...... An extremely incredible scene happened in front of my eyes.