The arrival of December in the first winter of Emperor Jing brought the temperature in the clouds to freezing.

Walking on the street, the shearling jacket on his body seemed to have no effect on the cold weather, so cold that Han Rui hid his hands in each other's sleeves.

Walking to the destination, Han Ruizi slipped his nose: I finally found it.

Since Luan Bu took office as the county guard in Yunzhong, Han Rui was abducted by Luan Bu and became his personal guard!

Every time he wanted to leave, Luan Bu took out an IOU and reminded Han Rui: Want to leave?

Pay back the money to Lao Tzu first!

However, the procedures on the IOU are complete, and the seals and letters are complete: in the morning of November in the winter of the first year, Zhang Jiayu Zirui sat and killed people and deserved to die; General Luan Bu ransomed him with 100 gold and was spared.

Han Rui was deeply skeptical about whether Luan Bu had really taken out the money and handed it over to the county government.

The old thing couldn't even get ten gold at the beginning, so Han Rui was put on a show by his daughter-in-law!

Now take out a hundred gold to atone for him?

Fool it!

Now he has the final say in the whole cloud, even if he really takes it out, isn't it still the left hand to the right hand?

Walking into the blacksmith shop in front of him, looking at the stone hammer that a white and strong man was swinging hard, Han Rui secretly clenched his fists: I must quickly return the gold that I 'owed' to the old thing!

In addition to the ten gold that Luan Bu didn't give all at the beginning, and the reward of 120,000 yuan that Han Rui received after the war, Han Rui probably still owes Luan Bu seventy-eight gold.

Is it rare?

Hum ···

Seventy-eight gold, converted into money, that is 780,000 yuan!

Do you still remember how much money Han Rui and Zhang Jiayu could get every day when they joined the army?

Twenty dollars in three days!

The average is 6.66 yuan a day, which is not even seven dollars!

If Han Rui continues to be a civilian husband and tries to repay his debts with military salaries, then even if he doesn't eat or drink, it will be at least three hundred and twenty years!

Where is the old guy pit his money?

It simply forced Han Rui to sign a deed of sale!

With such a huge amount of money, if Han Rui wants to pay it off quickly to get out, he has to make some moves.

The bearing, which was shelved again a few days ago, appeared in Han Rui's mind again.

If you can make a batch of bearings, sell them to rich people and install them on the wheels of carriages, or even make a pure iron rut and add bearings directly!

With the money you get, you may be able to pay off your debts.

Thinking like this, Han Rui looked at the eyes of the big man wielding the hammer in front of him, and gradually became obscene...

Being stared at by such a not very 'friendly' gaze, the stone hammer in the old man's hand could no longer swing it, so he set it up on the stone platform, came back to his senses, and looked at Han Rui suspiciously.

Han Rui realized that he was out of shape, so he hurriedly straightened his face, and bowed his hand and said, "The junior is rude." ”

Since October, staying by Luan Bu's side, Han Rui has not learned anything else, but has touched the etiquette of this era.

What kind of words to say to what kind of person, Han Rui already knows everything.

What surprised Han Rui the most was that as long as the other party was over sixty years old, even if the other party was just a farmer's uncle, he would have to pay a big respect!

This has nothing to do with Han Rui's status - even if he is an emperor, he must bow down to anyone over sixty who is not a criminal or a slave!

How does the old man return the gift?

Theoretically, a slight bow is sufficient!

Although in reality, no one will be so arrogant, but this theoretical privilege alone is enough to surprise Han Rui...

You must know that the emperor worships the prime minister, and the highest courtesy that the prime minister can get is only the gift of 'worshipping' - the emperor worships the prime minister, seals each other, and then bows and is ordered!

This made Han Rui, who came from the era of 'old men lying everywhere, old Taiba Square', feel extremely unreal!

Even if he was surprised, he had to follow the customs, and sighed in his heart the implementation of the Han Dynasty's 'ruling the world with filial piety', and bowed deeply to the old blacksmith in front of him.

The old craftsman looked strong, but the white hair on his sideburns and fluttering whiskers still made Han Rui dare not slack off, even if the other party didn't seem to be over the age of sixties, Han Rui still did enough courtesy.

Unexpectedly, the old craftsman was not as sincere and frightened as an ordinary old man, but nodded naturally as he should have been, and said in a deep voice: "What are you looking for me?" ”

Han Rui hurriedly took out a small piece of cloth from his arms: "In Xia Nai County, guard the retainers of the Duke of Luan; The general's order is to come down to find it, and he wants to ask the old man to make this object..."

The old guy has pitted himself so badly, it's not a big deal to pull the tiger skin to use it.

The old man did not hide the disdain in his eyes, and snorted coldly: "You rich children, you really don't know what thrift is!" ”

In the old man's opinion, how could Han Rui, who had thin arms and thin legs, be General Luan's guard?

I'm afraid it's not the children of the Luan family, pulling his name out and making some playthings for himself.

Look!

The precious cloth was actually wasted to make drawing paper!

Frowning, he stretched out his hand full of charcoal ash to take the cloth in Han Rui's hand, and with a slight sweep, the old man's face became solemn!

The round objects painted on the cloth are marked with the exact size in almost every place!

What stunned the old man the most was that the size of the ball between the two rings in the picture was accurate to the extent of 'taking one out of ten inches'!

Such a delicate and strange device can never be the plaything of a gentleman!

Rao is an old man who has been a craftsman for more than 40 years, and he has seen a lot of knowledge, and he has never seen such a precise device.

Solemnly looking at the cloth in his hand, the old man's face was no longer contemptuous, and he solemnly returned to worship and said: "This thing, the old man has a few puzzles, I don't know if the son can solve the doubts?" ”

When Han Rui heard this, he was overjoyed!

He is not afraid that the old man will not be able to understand it, but he is afraid that he is the same as the dozens of craftsmen before, and when he sees the picture, he will say that he can't make it!

Hurriedly arched his hand and said, "Please also ask the boss to try it." ”

The old blacksmith pointed to the place where the balls were painted on the cloth and asked, "Look at this picture, old man, are these iron balls to be tightly fitted between the two rings of desire?" ”

Seeing Han Rui nodded, he asked again: "If this is the case, there must be a groove between the two rings!" ”

Han Rui nodded excitedly: Finally, someone can see the doorway!

"The Boss might make it?"

The old man looked at the drawings in his hand, and then looked at Han Rui: "Is this thing going to be mass-produced?" ”

Seeing Han Rui nodding again, the old man confirmed the conjecture in his heart: This thing must be a militaristic weapon!

Having been a blacksmith for decades, how could he not see the use of this object?

This object is basically a step forward in the method of 'rolling wood transport', so that the transported object moves from a plane to a circle!

The fixed surface is changed from the ground to the inner ring; The iron ball plays to the left and right of the rolling wood, and the outer ring is the wooden board that originally carried the goods!

Even... Let the outer ring be the fixed surface, so that the inner ring can play the role of a load-bearing plank!

"It's amazing..."

The old man stroked his beard and sighed, admiring the person who came up with such an ingenious thing.

Although he couldn't figure out what he could do with it, the window paper of his creativity had been punctured, and his instincts told him that it would be useful!

With respect for the person who came up with this thing, the old craftsman handed the cloth back to Han Rui, shook his head, and said, "Son, atonement, the old man is not skilled, and he can't make this thing..."

Han Rui was stunned for a moment, and hurriedly said, "Why did the boss say this?" ”

The old blacksmith shook his head and returned to the front of the Daojiang platform, raised the giant hammer, and said behind him, "Childe, look." ”

Hearing this, Han Rui hurriedly came to the craftsman's table.

I saw the old man take out a piece of scrap iron from the soil pit on one side, heat it and fix it on the stone platform, and smash it down with a stone hammer.

Smash dozens of times, use tweezers to slightly adjust the position of the iron, and then continue to beat.

After repeating this for more than an hour, the old man stopped, picked up the iron that had been slightly spherical, and put it in the sink beside him to quench it.

After a long time, watching the old man slowly take the iron out of the sink, Han Rui's heart was cold...

That iron ball is not so much an iron ball as an irregular spherical N-sided body!

No matter how sharp the protruding part is, you can use it directly to make a meteor hammer!

The old craftsman used tweezers to clamp the iron block in front of Han Rui, threw it on the ground, and said: "The old man has been striking iron for more than 40 years, and it will take an hour to knock out such a useful iron bead. ”

"Not to mention this iron ball, if you want to use it on the things painted by Childe, you have to polish it until it is as round as jade."

"Childe also said that the iron bead and the inner and outer rings need to be closely fitted, so that the inner and outer grooves of the iron ring may be finely ground, and the time consumption is only a lot more."

"Presumably Childe has also heard the proverb: Ten years to sharpen a sword?"

The old man shook his head and sighed: "Just polishing an iron bead, I'm afraid it will take a skilled craftsman to polish it for more than ten years." ”

"In this way, even if Gongzi can find dozens of craftsmen, just based on the time spent polishing iron beads, there are only more than 30 pieces of this thing made every year, how can it be mass-produced?"

Han Rui listened, and his originally high emotions sank to the bottom.

Thirty pieces in one Chinese New Year's Eve...

Isn't that still a luxury?

What limited edition Lamborghini came out of in the future, it wasn't like that!

Dozens of blacksmiths, not to mention food and accommodation for a year, have to pay a lot of wages!

After thinking about it, Han Rui still didn't give up and said: "It's okay if you don't mass produce it, just make one..."

Why don't you make one and let Han Rui solve his urgent needs?

This is the only one in the world, and the hype should be able to sell for a hundred gold.

Seeing that Han Rui was so attentive, the old man also felt a pity in his heart for this ingenious thing.

Helpless, he could only ruthlessly destroy Han Rui's fantasy: "I forgot to ask Gongzi, after the iron bead is made, how to put it into the groove between the two rings in the picture?" ”

The forgotten problem was mentioned again, and Han Rui's heart was completely cold...

Arching his hand casually, bowing his head in frustration, Han Rui said goodbye and wanted to leave.

As soon as he walked to the door, the old man's sudden shout stopped Han Rui.

"Have you ever heard of Lu Bansuo?"

Han Rui's eyes widened when he heard this, and he was speechless.

Luban lock, isn't it the dougong structure used in the building?

The whole structure is composed of cut wooden blocks, without a line and a nail, and it is purely supported by scientific mechanical structure to maintain its integrity!

Even in later generations, it is still called the most intelligent and scientific building structure in China and even in the history of mankind!

In the 2010 Shanghai World Expo, the Chinese National Pavilion used the dougong structure!

Under the weight of thousands of tons on the top of the museum, the load-bearing beam of the bucket arch structure is also as solid as a rock!

Slowly turned his head: "The boss is saying that with the principle of Luban lock, cut the outer ring into pieces, and spell out the outer ring outside the iron ball?" ”

The old blacksmith shook his head and said, "The old man is just a vulgar craftsman, and he can't make such complicated things. ”

"But the old man's mentor is still there; If you have a heart, you might as well give it a try. ”