Watching Yu Hui take off the cooled shovel head from the ashes, send it into the furnace again to heat, carefully stare at it so that the temperature is not too high, and after it is slightly red, he takes it out and stuffs it directly into the prepared trinitrate aqueous solution. Pen ~ fun ~ pavilion www.biquge.info

"Wow~~"

With a crisp sound of water, a stream of water vapor rose from the quenching brazier, and Tie Laosan smelled a strange smell of sour and salty.

"What is this?" asked Tie Laosan.

"This is trinitrate water!" Yu Hui said.

It's been so lonely lately, so I'm holding back the birds.

After Yu Hui came here, there were three people who could talk well, and there were only three of them.

One is Yan Wan, Yu Hui's attitude towards her is submissive, at least the current performance is quite honest.

The second is Li Muyou, for him, he is cautious and cautious, and his friendship is as light as water, especially after Yu Hui knows that he and Yan Wan's father are old friends, he is more and more vigilant. In Yu Hui's opinion, the other party doesn't take him too seriously, so forget it.

The third is the round-faced maid, but if there is a friendship between the two, it is also mechanical and procedural, and her function is to convey words to Yan Wan.

And he met Tie Lao San today, and he can finally discuss some things that can make him honest with each other, and he can talk freely!

Science!

He opened a door to science for Tie Laosan!

If it weren't for his own escape plan, Yu Hui would even lead him into the door!

Come on, come on, I'll tell you, that's how the iron is struck!

The other party had a placket tied around his waist, his shoes were ashed, his hands were calloused, and his palms were dark, so how could he not see that this person was the blacksmith in the stockade.

Come on, come on, if you have enough materials, get me a mecha out!

But in the future, while planning to escape, it's good that everyone can chat, and I can talk to you, which is good.

Yu Hui soaked the shovel head in water for a minute or two, then took it out, threw it on the ground, and said to Tie Laosan: "Okay, you can take it out and try the blade, the green bricks can be split." ”

The scientific principles of material heat treatment are really not something that a folk blacksmith can understand, of course, this does not prevent these folk blacksmiths from finding heat treatment methods that are convincing to material experts with their instinct and years of practice.

In terms of iron, the other party is the expert.

Yu Hui remembered, but still picked up the shovel and put on the long handle he had prepared.

"Well, it looks like the color is right. I just don't know if it's strong or not......" Tie Laosan took the shovel head, looked at it carefully, and nodded. "You said you could split the bricks. ”

Yu Hui came out of the house first, full of confidence, and said. "Yes, let's hack!"

Tie Laosan was still cautious, he took the shovel and smashed it back and forth on the brick a few times, and then raised it to look at the edge of the blade, and saw that the edge of the blade was intact, which was ruthless, and picked up the shovel vigorously and split it on the brick.

"Keng~~"

The bricks shattered into several pieces in response, and listening to the crisp sound of the shovel hitting the bricks, Tie Laosan couldn't help grinning, thinking in his heart that there must be a small gap in this shovel anyway.

At this time, he hurriedly lifted the shovel, wiped the remaining brick scraps on the shovel head with his hand, and looked at it intently, and couldn't help but be stunned.

I saw that in the place where the bricks had been smashed, there was only a faint trace of friction, and there was no damage or curl. Everyone can feel the force that the brute used just now, and it was unscathed under such an impact, which shows the excellent quality of the blade of this shovel.

Now he believes what Yu Hui said, it won't be a problem in ten or eight years!

"Do you still have that trinitrate water?" Tie Laosan hurriedly asked.

"Uhhhh Yu Hui was stunned. "There's still some left, but I can get you another pot. ”

"Oh, good, good. ”

Yu Hui was quite efficient, and quietly cultivated the vegetable field and sprinkled the seeds.

But I always felt that something was missing, so I thought about it seriously, so I peed.

That's it.

############

Zheng~~

Zheng~~

Zheng~~

From time to time, the sound of forging iron came from the shop, and with a "swish" sound, it was put into a basin of water and quenched, and the object was formed.

"Tie Laosan, what you've been doing lately seems to be much stronger. ”

"That is, I have been striking iron for decades, and I have to be good at my craft. ”

Pedestrians walked leisurely past and greeted him.

Tie Laosan completed today's task, looked at the basin containing the three nitrate water on the side, and was a little excited.

Picking, firing, forging, shaping, steel throwing, quenching, tempering...... Tie Laosan found that this young man knew more than himself, and he also had a good physique suitable for striking iron, and he was not ambiguous when he picked up the sledgehammer, and he was more energetic than himself.

Tie Laosan threw himself to the ground for the five bodies that he had already admired and blindly worshipped.

In particular, he also taught himself a trick called "Ze Oil".

The so-called oil is to quickly clamp a piece of pork (or directly with vegetable oil, or even pig skin) after the iron tempering while the high temperature still exists, and the pork and pig skin are pasted on the utensils and rubbed repeatedly, and the high temperature of the iron utensils makes the pork ooze lard and smear on the utensils, which not only helps to improve the luster, but also makes the utensils not rust for a long time.

He really hasn't seen the master use this hand, Tie Laosan took a piece of pigskin and wiped it according to the method he said, I thundered you!

God!

It's so bright that the iron can be used as a mirror!

This day, he only played two sickles, and the task was quickly completed, and Tie Laosan rushed to find Yu Hui after picking up a pig's trotter from Zhang Butcher.

This is an agreement between the two, and Tie Laosan takes care of him every day.

At first, Yu Hui insisted on stuffing money into him, but Tie Laosan couldn't accept it! Later, Yu Hui gave up, picked it in his head, and let the system search his information base, and taught Tie Laosan more professional knowledge in this area!

"What are you doing?"

At noon that day, Yu Hui was standing in a daze beside the rice field in the east of the house, not alerting that Tie Laosan had already come, and a tall figure also came into view.

"Think about things. ”

"What do you think?"

"Fish farming. Yu Hui didn't have a head and a brain.

Tie Laosan was stunned and puzzled.

But he had a feeling of not being aware of it, because he was so focused when he first met Yu Hui.

Then he asked him what he was doing, and Yu Hui also replied lightly in this tone.

In other words, Yu Hui has the same action below him that blinds his eyes, and he is excited to think about it.

Yu Hui inadvertently glanced back, just like then.

It's just that this time Yu Hui couldn't focus, and the hunger that had been suppressed for a long time suddenly exploded!

My sweet trotters!