Zhang Tan stepped forward to salute, and Renault asked, "I heard that you know carpentry, can you use hoop barrels?"

"Yes. When it comes to craftsmanship, Zhang Tan's momentum is obviously much stronger.

"It's not an ordinary bucket, and the worst bucket I want should be leak-proof, preferably completely airtight, even the air must be isolated. Renault said that it is said that the French coopers have a very high status, and after a thousand years, some people still think that the oak barrels made by hand are the best, and the barrels made by machinery are soulless.

Well, Renault doesn't understand this, let alone such a as whether a barrel has a soul or not, he can't even taste good or bad wine.

Making wine, is he really not looking down on Da Chu rice wine, that kind of semi-sweet is not sweet, there is no degree to degree, and there are many impurities in it, is it really wine?

The most excessive thing is that when you drink, you have to sift it, one sieve per person, how much you sift to drink, hey, that's also called drinking?

Zhang Tan pondered for a moment, then raised his head and asked, "Sir, what is air?"

Renault patted his forehead, how do you explain this, you have to give Zhang Tan a simple chemistry first? The problem is that the air is not very easy to prove, if it is placed in the school, it is easy to do, any junior high school, there is an experimental building, but he has nothing at hand, and it is not easy to let Zhang Tan intuitively feel the air.

"Breathe, you know, it's our breath, it's air that we breathe. Renault didn't plan to give the little old man a lesson, he explained a few words casually, it was best to understand, and if he couldn't understand it, it would be okay, as long as he could do it without leaking, it would be considered a pass.

Sure enough, Zhang Tan didn't seem to understand what he heard, and after a while, he nodded and said, "Sir, I can try it, but I'm afraid it won't work with ordinary wood." There is a white-toothed tree, the wood is soft and tough, and it is just right for hoop barrels. ”

"No problem, I'll just let people buy it. Renault nodded, and Lees went out to call someone to buy.

There are in Dingjun City, and a few carts were quickly pulled, and the grapes over there were also delivered, and a carload of cars was formed into a convoy, and the place that Renault chose before was relatively empty, just for putting materials.

The chapter altar broke the wooden board, and the hoop barrel was constructed with mortise and tenon joints, and Renault nodded secretly, this craftsmanship was beyond his imagination. But is the barrel made of mortise and tenon?

The name of the craftsman is also a little interesting. As for whether it's good or not, I'll talk about it when the hoop comes out, Renault can't understand it anyway.

There was no idle here, and the group of Hu Mei'er's subordinates were all pulled over, first cleaned the wooden basin, cleaned the grapes, and soaked them in the wooden basin for half a quarter of an hour, and then pounded and added sugar......

You read that right, that's how Renault makes wine, he wouldn't have been okay in the first place, it's the family way of making wine. As for how the French make wine, who cares?

Renault instructed the winemaking for a while, and then followed Cui Qing to guide the smelting, a furnace of fine iron cast into blocks, and pots of grape juice were also prepared.

Zhangtan's craftsmanship is really not picky, the first white tooth bucket is finished, try it with water, it is really leaky, good craftsmanship, but the efficiency is too touching, the furnace over there has been smelted more than ten furnaces, hundreds of pots of grape juice are mixed, you will hoop out a wine barrel for me?

Where is this, Zhang Tan don't do it first, Huya will transfer some carpenters over, let Zhang Tan be a teacher, and guide the carpenter to make a bucket.

Although the hoop bucket is a technical job, the difficulty is not high, under the guidance of Zhang Tan, in a few days, the speed of the carpenter's hoop bucket has caught up, and the speed of Hu Mei'er's subordinates to process grape juice is the same.

Most of the Flying Bull Broken Flow Iron has been refined, and what is piled in front of Renault is a metal ingot of ten catties a piece, which is already more than three hundred catties, and after three or four days of refining, the work is almost finished.

Zhang Tan was also idle, standing beside Renault, preparing the small furnace, turning from a carpenter to a blacksmith, he found that this new master was very magical, and he was surprised to find that Renault was actually the legendary secret master.

A few days ago, he realized that something was wrong, and it seemed that Mr. would only be invited over when the furnace was almost finished, and he would give a few random points, and it would soon come out, and it would be a piece of fine iron, and it felt a little different from ordinary fine iron.

He had endured it for several days, but he didn't dare to ask because of his different identities. But this person has liked these things since he was a child, and he is really bitter.

"Come, first build an iron ruler, there must be a notch on it, the notch must be accurate, can it be done?" Renault put a wooden ruler in front of the Zhang Tan, not even a serious ruler, you said how to let the workers work, so the first thing Renault wanted to build was the iron ruler.

After listening to Renault's request, Zhang Tan nodded, this is not difficult, the iron ruler is actually a long piece of metal, and there is no difficulty at all. It is difficult for others to engrave the traces on it, Zhang Tan thinks there is no problem, so he will not mark it by hand.

Renault gave a piece of chrome steel, the ruler is a commonly used tool, it does not require much strength, stainless steel is best.

Zhang Tan put the metal block into the molten and heated it, and the metal block was just burned red, and he realized that this was different from any kind of fine iron he had played with before.

"What do you want to ask?" Seeing the little old man's appearance of wanting to speak and stopping, Renault took the initiative to ask, don't hold this little old man back from his troubles.

"Sir, this iron ...... It's different. ”

"Well, this is chromium-added fine iron, which is naturally different, and its biggest advantage is that it will not rust, even if it is thrown into water. Renault nodded and said, Cui Qing's people have already tried it, Renault's metal formula may not be very reliable, at least it is really stainless steel.

"Sir, what is chromium?" Zhang Tan's heart trembled, he was sure that the rumors outside were true, and the master was really a secret master.

"Chromium is one of the metals, and if you add chromium to fine iron, it will not rust. Renault began to think about it, he used to want to open a school, but now he felt that he was afraid that it was too easy for him to think about things. A simple metal element chromium, he didn't even know how to explain. If you ask deeply, Renault won't either.

This chapter is the most obsessive, and the desire for knowledge is very strong: "Sir, why does it not rust if chromium is added?"

Damn, how does Lao Tzu know?

Afraid of something, Renault can keep his face calm.

"Zhang Tan, it's impossible to build a pavilion in the air, you can build a house only by laying a good foundation, you know too little, even if I explain it to you, the more you ask, the more confused you become. "Fortunately, I have already thought of an excuse before, this matter of opening a school, I am afraid that it will be released first, Renault must figure it out, is he really suitable to be a teacher?

On the earth, teaching is a very common profession, and many college students think that they can do it themselves, but believe it or not, many students can be tutors.

In fact, these are completely different things, why do formal teachers have to get a lot of certificates to get on the job, and why do teaching and learning grow together?

As a teacher, if you are stumped by a student, you will lose face. Therefore, the teacher needs to have a thorough understanding of the knowledge taught.

Renault has a lot more knowledge than Zhang Tan, but it is really more serious, and there are many questions that Renault does not understand.

There are many people who can use office software, but how many can play all the functions of office software? There is no one in a thousand people, you use it every day, it does not mean that you use it well.

The vast majority of people will only use the ones they often use, and only the teachers who teach the software will study every sub-function of the software thoroughly.

The more he thought about it, the more depressed Renault became, and he found that no matter which subject he taught, he was not sure. It stands to reason that teaching mathematics is the easiest, but when he thinks about it, he finds that he can't memorize the math textbooks of elementary school, junior high school, and high school, and he can't teach them to others systematically.

What can really be taught, that is, the four operations, plus equations, the most familiar is high numbers. In the middle, there must be a lot of knowledge points missing.

logarithms, prime numbers, odd and even numbers, permutations, combinations, ......

Renaud found that he could count the knowledge points that were not small, but he couldn't figure out how to teach them in order.

For Mao, many traversers can compile study materials for their sons to go to high school and even college?

Anyway, his grades are not bad, not to mention high school, he can't even memorize it in elementary school, okay, if you want to write similar materials, you have to remember a little bit, and you can't compile a relatively complete math textbook in ten or eight years.

It's all a lie, Renault's face is sad and indignant!

Come on, come on, everyone has memorized Tang poems and Song lyrics, and a few can recite 300 poems completely and word for word, stand up and try?

Renault has also memorized it, but Tang poems and Song lyrics are not a necessity of life, okay, when I memorize it, I remember it, and I don't use it for a long time, so I forgot it.

Not to mention 300 songs, it is a bit difficult to memorize 100 capitals completely.

I don't teach, the school is gone, and I think of where I want to go......

"Yes, sir, yes. Zhang Tan took out the red-hot iron and began to forge the iron, as soon as the hammer went up, he knew that this piece of chrome iron could be used directly without how he could forge it.

When Renault looked sad and indignant and reluctantly ended his career as a lewd teacher, the iron in Zhang Tan's hand also became a ruler.

Without waiting for the ruler to cool down completely, one hand chisel, the other hand hammer, look at the wooden ruler, hammer down the hammer, one by one, the same length, the scale, appear on the ruler.

Renault was no longer sad and angry, he watched Zhang Tan work, and secretly glanced at him a few times, does this old man have laser ranging in his eyes? Anyway, Renault can't see anything wrong with the scale with his naked eye.

It is said that the eighth-level worker can see at a glance the error of one-tenth of a millimeter, but Renault is not good, and those who study electronics have no advantage in this regard, and the error within one centimeter is still a little certain. Obviously, the scale chiseled out of the chapter altar has an error of millimeters.

The millimeter-level error, in any factory on the earth, belongs to the ranks of waste products, and it is definitely the highest precision in Dachu.

The scale was completed, the ruler cooled down, and Zhang Tan offered it with both hands: "Sir, please advise, can you still use it?"

"Well, it's okay. "Renault has seen a micrometer, vernier caliper, a millimeter-level ruler, naturally not scare him.

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