Dajiang Zuo wanted to raise his hand, but after thinking about it, he secretly retracted it. When the little girl is angry, her aura becomes so strong.

Then I saw Su Xiaomei slamming two volumes on the table: "Even if you understand the first volume, there are still volumes two and three! Who knows the principle of the asymptote gear on the hydraulic device? Who can draw it?

?!"

What a risk! Dajiang Zuo patted his chest. Fortunately, I didn’t raise my hand just now!

After Su Xiaomei finished speaking, she turned around and used a ruler and compass to draw on the blackboard. After a while, she drew a large gear with calculation formulas next to it. Then she patted her little hands stained with white dust and said, "It's so troublesome, who will take the picture?"

Want to draw one?"

A group of craftsmen shook their heads and snored, but this time they were completely honest.

Su Xiaomei gritted her teeth and said: "Whoever makes trouble again will be kicked out by the squad leader! Anyway, in the end, I won't lose the opportunity for promotion and salary increase!"

Dajiang Zuo poked his deskmate Zhang Qi with his elbow and whispered: "Mr. Xiaoqi, can you draw?"

Zhang Qi buried his head and was wrestling with the elliptical question Su You asked him: "Listen carefully and don't open or lift any pot!"

…

The Zhou case has entered a strange atmosphere.

For the first time, the craftsmen felt that a kind of metaphysical knowledge could be extracted from the gadgets they had studied for generations.

All methods are correct, this is an inverted cone-shaped system.

A straight line, a circle, a few simple principles, then superimpose and expand in a spiral shape, and finally form a system with strict logic and no change.

In the past, when we worked according to the methods passed down from our ancestors, we knew what was happening but did not know why.

Now that Mr. Xiao explains the truth contained in it, the craftsmen understand that it turns out that their ancestors designed this place like this because of this theorem; that place was designed like that because of that formula...

Although they are still very ignorant, everyone understands that this is definitely a profound knowledge that cannot be escaped.

The first thing that countless craftsmen do when they return home is to call all the children over: "Come on, come on, my husband's class is here today. I will tell you. You must understand the stuff of your ancestors. If you don't understand,

I don’t have Granny Chen’s meatloaf to eat tonight…”

In fact, the great craftsmen of the past dynasties may not necessarily understand the theoretical principles, but they have rich practical experience and unconsciously applied these principles to production.

However, this did not prevent Su You from deliberately misleading. Seeing the young gentleman praising the magical designs of various ancient French styles in the case, and then asking the craftsmen to analyze the scientific knowledge contained in them, the craftsmen felt that they had shamed their ancestors.

They don't know how to use anything passed down from their ancestors. To the Song people, this was rebellious and they couldn't even raise their heads to meet people when they walked out of the house.

In the Song Dynasty, many of the temple supervisors, various magic officers, such as Si Tian, ​​and medicine were inherited from their families.

The same is true for the case workshop.

Many craftsmen came to ask for help, little sir, hey hey hey, there are some unsatisfactory people in the family, can you also come and listen?

When we go home and talk about it, we are always separated by one floor. These are all related to the children's future money and food...

Su You waved his hand and said everyone would come. Now that circular saws and other equipment were in place, if he couldn't sit down, he went to his brother's unit to borrow people from the supervisor to build a large classroom!

Gao Shilin also came today, bringing with him a middle-aged man who is older than him and a teenage child.

Although he is said to be a child, he is actually about the same age as Su You himself.

Su You was talking about the principles of centimeters and micrometers today. After class, he came over with his schoolbag on his back and said, "Su You has seen the trial."

Gao Shilin asked: "How is it? Can the craftsmen still learn from it?"

Su You smiled and said: "The progress is very fast. They already know most of the things, they just refine them."

Gao Shilin smiled and said: "Let me introduce to you, this is my maternal uncle, Cao Yi. Oh, by the way, he is the brother of the Imperial City Envoy whom I met in Daxiangguo Temple. He was curious about the course on the case, so we came to have a look together.

"

Then this person should be called Guojiu.

Cao Yan cupped his hands and said: "The centimeters and micrometers that Mingrun talked about made people suddenly enlightened. The thing that happened to be in need of each other should be related to this."

Su You smiled and said, "Let's go to the teaching and research office to discuss it in detail."

When I came to the teaching and research office, I saw Zhang Zao, Zhang Qi and Su Xiaomei, each with a desk, correcting homework.

The walls of the teaching and research room are covered with various teaching aids, and the bookshelves are filled with various brass mechanical parts.

After serving tea to several people, Su You asked, "Why is the unknown nobleman here?"

Gao Shilin said: "My uncle is a literati and is an expert in music and poetry. This time I am going to Yangzhou to be an official, so I would like to ask Mingrun for some advice."

Cao Yi said: "Yangzhou is prosperous, but its customs are too heavy and it is extravagant. This is similar to Yizhou. I want to learn from Meishan's way, so that it can have enough food and clothing and know etiquette. After much deliberation, I can only learn from books.

Get it."

Su You said: "Are you going to print it yourself? Or are you going to buy books from Meishan?"

Cao Yi said: "Meishan's books are excellent, but the price is really expensive. I think it is better to publish them by ourselves."

Su You said: "This matter is not difficult. The Meishan historians make excellent porcelain. Uncle Guo can buy a set of porcelain codes from them, and then everything else will be easy."

Cao Yi cupped his hands and said with a smile: "I originally wanted to make the code myself, but the lesson I just received from you is better than ten years of reading. The movable type code is only the best in Meishan, not inferior to the engraving, but there is a reason."

Su You smiled and said: "Indeed, and the class just now was just one of the reasons. Dozens and hundreds of improvements, code, ink, paper, and processes were accumulated, and today's Meishan Printing is the result.

Uncle Guo goes to Yangzhou to promote writing, so the requirements don’t have to be too high."

Cao Yi smiled and said, "I'll leave it to Mingrun to handle the porcelain code."

Su You smiled and said: "This is easy. I will write a letter and let them ship it directly to Wuzhong. When Brother Cao arrives in Yangzhou, he can go to the Sitong Merchant Club to pick it up."

Cao Yi was overjoyed: "This is great!"

A few people were talking happily when they heard Su Xiaomei's voice: "Who, don't touch the mechanical teaching aids!"

Several people turned around and saw that Cao Yi had brought the child, who was playing with the brass workpieces on the shelf.

Gao Shilin said awkwardly: "Uh, this... this is my... little brother."

Su You took off the workpiece: "You find it interesting, don't you? The principle taught by this teaching aid is like this, you can turn the wheel and see."

The child turned the wheel and saw that the front of the connecting rod drove two tooth slots. Every time it turned, the tooth slots were pushed forward.

Su You smiled and said: "This is called a stepping system. Every time it turns, a step occurs."

The child asked: "What's the use of this?"

Su You said: "Let's assume that a piece of leather armor needs to be assembled with rivets, such as shoulder pads, heart guard, and lock straps. Through this machine, a conveyor belt can be made. A worker is only responsible for the shoulder pads, and then puts them on the conveyor belt.

, the conveyor belt passes through the stepping machinery to transfer the leather armor to the next worker who only installs the heart guard."

"In this way, each worker only needs to specialize in one detail, and a stepper machine can form an assembly line. Not only does the efficiency increase, but the craftsmanship is also more exquisite."

The child nodded: "It makes sense, but it takes such a small step for the water wheel to make one revolution, which is too slow."

Su You took out another component of the gear set: "Look, this is the mechanical component used to change the speed. When the big wheel turns once, the small wheel can turn countless times. The ratio between them is determined by the number of teeth on the two wheels.

Determine the ratio. You can try to count, calculate, and rotate again to see if this is the case."

The child went off to make calculations by himself, and Su You came back to continue drinking tea and chatting with Cao Gao.

Gao Shilin said: "Mingrun, brother, you haven't been fooling around during this time. I went to those crazy mines you mentioned. My legs are almost thin, and several pairs of boots are worn out!"

Su You added tea to the two of them: "Since you are so proud, then you must have found it?"

Gao Shilin laughed loudly: "Tanhualang really knows everything after hearing it. I found this thing in Ma Deng Town, Nanyang! Speaking of which, if the steel smelted by adding this thing is not strong, my brother will ask you to pay for the boots.

!”

Cao Yan said: "Speaking of Ma Dian Town, there is an allusion."

Su You raised his glass and said, "Uncle, please come and speak."

I heard the young man who was calculating the tooth ratio say: "Liu Xiu, Emperor Guangwu of the Later Han Dynasty, raised an army to attack Wang Mang, and was chased to that place by Wang Mang. In order to get rid of the pursuers, Liu Xiu used a clever trick and deliberately threw the stirrup on the ground, and then

He went off the side road and finally escaped from danger."

"After Liu Xiu became emperor, he sealed the town as Ma Deng Town! I calculated the gear ratio of yours. The big wheel has one hundred and twenty teeth, the small wheel has twelve teeth, and the big wheel has one turn, and the small wheel has ten turns.
Chapter completed!