This workshop is not a pond kiln workshop, but an auxiliary workshop for making various glass molds in the Qingyunzhai kiln yard.

The craftsmen are now busy with a combination of several brass cylinders and cake-shaped parts of the same material, and in modern times similar devices are more complex than this, called cylinders and pistons.

Xia Yanqing's idea is to use the hot flue gas and the cold air intake to interact with each other to make the piston do reciprocating motion, and this movement drives the corresponding conversion device, and then drives the fan blade at the end of the flue to let the flue gas be discharged.

The fan blade has been proven to be driven by manpower, and it has a good effect of wind induction. However, manpower could not ensure that the blades could run at high speeds for a long time, so a piston device was introduced.

Facts have proved that Xia Yanqing's way of diverting Fang Chaosheng's attention is very correct.

As soon as he entered the workshop, Fang Chaosheng forgot about Xia Yanqing and the genius craftsman of that matter, and his attention immediately focused on the assembly of the simple cylinder and piston, and from time to time he pointed out a certain craftsman who was limited to a difficult situation, or saw that the sealing surface of a certain piston was not polished enough, and immediately scolded him for starting over.

Xia Yanqing stood in place and watched for a while, seeing that Fang Chaosheng's mood was stable, and making sure that the work done by the craftsmen today was quite passable, he continued to walk in and watch the progress of this device.

When she walked to a workbench, she looked at a small part that Fang Chaosheng was grinding carefully, and asked, "I see that the progress is okay, this air induction device really can't be advanced, must it be possible to try it after the year?" ”

Obviously, she asked a very layman's question, Fang Chaosheng stopped what he was doing, glanced at her unhappily, and said, "Do you think this is an ornament made of paper?" This is an assembly object that needs to be continuously moved, and it is not possible to do it in the slightest. ”

"Oh." Xia Yanqing really didn't know anything about this, so he only heard Fang Chaosheng continue, "The primary device we tested two days ago was just to confirm that this idea could indeed take shape. In order to continue to operate without interruption, the individual rotating parts must be meticulously detailed. Once the first set of units is successfully operational, and the components are dimensioned and accurate, it is much easier to replicate. ”

"Oh." Xia Yanqing continued to nod, indicating that he understood.

The phenomenon that the cylinder and piston will move on their own under the alternation of hot and cold is the phenomenon that she used the iron mold of a glass bottle and a few pieces of thick paper to be seen by Fang Chaosheng "unintentionally".

After two coincidences like this, she was surprised and said to herself, "This thing can move by itself, maybe it can drive something", Fang Chaosheng was shocked and fell into it deeply.

In this era, there were no various machining equipment, no precise measuring tools, everything was done by hand and experience. Fortunately, in ancient times, there was also something called mechanism and gear transmission, which allowed the reciprocating motion of the piston to be converted into rotation.

But it is very difficult, a simple structure, after already having a mature plan and strong craftsman support, it will take almost half a year.

"It's coming soon, isn't it?" Xia Yanqing gave another comforting word.

Fang Chaosheng said: "Why is it fast? This is also our luck, there are a few coincidences to give inspiration, this can be done. Otherwise, this kind of action will not only not appear in this world, but even if you tell people about the heavens, no one will believe it. ”

"Well, I believe. If I hadn't seen it with my own eyes, I wouldn't have believed it anyway. Xia Yanqing continued to maintain the rhythm of opening his eyes and talking nonsense.

Fang Chaosheng looked at the busy craftsmen in the workshop, although these people were doing different things, they were all things he had never thought of or seen before, including the production and maintenance of those glass molds, which were also not available in the outside world.

And here, what he did was even more unusual, enough to give him a sense of accomplishment that he had not wasted in this life.

The wheel bearings he was involved in directing, and the continuous movement that alternates between hot and cold in confined spaces, these two techniques alone are enough to change many things in this world.

The craftsmanship of which he had been so proud for decades paled in comparison to it, and could be set aside.

Everything is going on as usual, and the next thing Xia Yanqing needs to worry about is how to make the imperial court willing to pay for the bearing technology.

In the midst of Xia Yanqing's thousand calls, two days later, Qu Jiang came to the kiln to inspect the work in person.

After looking around, Mr. Qu was very satisfied, sitting in the living room of the kiln, drinking tea happily and imagining a better future after the promotion of bearings.

"Ahem......" Xia Yanqing coughed dryly.

Qu Jiang, who was imagining, and Fang Chaosheng, who had wasted precious time and was very reluctant to accompany him, all looked at her.

"Master Qu." Xia Yanqing looked at Qu Jiang very eagerly, which made Qu Jiang have a very bad premonition, "Ah...... Miss Xia, please speak. ”

"That's right...... The bearing model that Master Qu took from us is the core of the technology developed by our kiln, I don't know if the adult has kept it secret for us, don't be learned by others. ”

As soon as Xia Yanqing's words came out, Qu Jiang was immediately stunned, "This ...... This ...... "This, it is bound to be learned, and it is not another family that is learned, it is the imperial court."

Bearing technology was learned by the imperial court, and it was a diffusion application. Countless horse-drawn carts were used to transport all kinds of materials transported by the local government and garrisons.

What's more, once this kind of thing is mastered by the imperial court, all kinds of workshops under the jurisdiction of the imperial court, all tools and utensils that do circular motion, may use bearings.

However, he had already shown the bearing model to the emperor, and the emperor was still full of expectations for this, and even urged to apply the steel balls as soon as possible, and make the rolling bearings with less resistance to run.

Now, this Xia girl is saying that she is unwilling to give up the bearing technology to others, even the imperial court.

…… What can I do?

Qu Jiang moved his gaze a little dazed, and subconsciously looked at Fang Chaosheng.

But he saw that Fang Chaosheng was drinking tea with his head down, if it weren't for the tea cup being too small, he was afraid that his face would be buried in the tea.

Fang Chaosheng really didn't dare to look at it, but he knew that Xia Yanqing planned to use bearing technology to earn the imperial court's silver.

In his spare time these days, he also quietly thought about how this girl would make this request.

He thought that Xia Yanqing would write something stating various reasons and difficulties. Tuo Qujiang again, find a way to hand over this thing to the emperor or some department. It is also possible to simply let Shao Yi directly raise his difficulties and demands to the emperor, and ask the emperor for a favor.

But who knew that the way proposed by this Xia girl would be so tough, where did this mean to ask and plead. This attitude is simply to say to Qu Jiang that I will take my things back, and at the same time ensure that the technology is not leaked.

Otherwise, you will have to pay the money.

Thinking about it further, this is also an indirect indication to the emperor that that thing cannot be seen in vain, let alone used in vain, and if you want to use it, you can take silver.

Fang Chaosheng's forehead was sweating a little.

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