The most important reason why Yanji and Yanjia can assist or even replace manpower is that they have the steam power provided by Chitose Gold.

It is precisely for this reason that since the emergence of the science of Yanjia, generations of Yanshi have been constantly improving the design around the mecha box, and there are many things that must be considered to improve efficiency and ensure safety.

The mecha box is not just a simple box, and the "Dragon Heart" is not just a separate cabin. They are able to keep the entire mech running, thanks to a number of intricate parts inside, and their core structure is a gold cauldron that can convert the millenium as fuel into power.

Earlier, when the study of Yanjia was just born, there was only one gold kettle in the mecha box, and the iron pestle in the kettle could go up and down under steam power, and it would never stop, so it was called Wu Gangfa Gui Pestle.

The people of the time also boldly popularized the application of this early mecha box, and even developed the prototype of the steam copper car. However, when the mecha box first appeared, it was far less useful than it is today, the gold cauldron was often deformed, and the iron pestle was also weak and inefficient, so it could only be used as a plaything.

The steam copper car with this kind of mecha box installed is at most a symbol of status and wealth, and the speed at which it really runs is not even as good as that of a horse-drawn carriage.

It wasn't until later that the Cardinal Council recruited skilled craftsmen from all over the world, gathered the first batch of Yanshi of the Great Qi Empire, and finally ushered in the first large-scale progress in the study of Yanjia.

Among these Yanshi was also born the second mountain chief of the cardinal, and what is especially special is that that the mountain chief was jointly undertaken by a pair of brothers. One of these two is named Xia Jun and the other is named Xia Ge. They came up with a method of "double dragon eternal play" by placing the gold kettle in pairs. This kind of wise practice made Wu Gang's Gui Pestle in the Golden Cauldron drive the Yanji to run every time he went back and forth, which greatly improved the efficiency of the mecha.

Since the development of the science of Yanjia, the structure and shape of the mecha have become more and more complex, but the various variations of the mecha box have never departed from the method of Ssangyong eternal frolic created by Xia Ge. It is precisely because of this design that has been passed on in later generations that although Xia Jun and Xia Ge did not establish the study of Yanjia, they are often among the ancestors of Yanjia in the classics of later generations.

But in front of Yu Moji, in the mecha box where the dragon's heart was exposed, there were seven golden cauldrons of different sizes lined up.

Although Yu Moji was born in a barbarian land, she had also read Xu Fuzi's classics covering a wide range of books, and copied many atlases of different styles and genres.

The design in front of her was something she had never heard of or seen.

Before entering the dragon's heart, Yi Xiaogong still played the usual lady role when facing Yu Moji alone, with a slow demeanor and an indifferent tone, but now, she has obviously returned to the state of a ship guard.

"You must have never seen such a seven-fold chain structure," Yi Xiaojiao's face was full of excitement and pride that could not be concealed, "You must take a closer look at how much it can save a thousand years of gold." ”

After Yi Xiaocheng mentioned this point, Yu Moji understood the use of making the gold kettle like this.

The seven pins and gold kettles are connected to each other, and there is even some concise meaning in the structure, and every pipe and every axle is used to the fullest. Looking closely, the ink marks can roughly divide the jagged sevenfold chain into three clusters, each cluster of gold kettles is connected to the front and back, so that the steam that still has a lot of heat left in the previous kettle can directly enter the next kettle to exert residual heat; The scale of the gold kettle is decreasing one by one, also because the steam in each kettle is gradually decreasing, and the space required is gradually decreasing.

The reason for the operation of the gold kettle, Yu Moji can barely understand it; But in order to truly realize this idea, maximize the use of the heat of the burning of the thousand-year-old gold, and save space as much as possible, the precise calculations and all kinds of ingenuity required are not to mention a small role like Yu Moji, and I am afraid that even a character like Xu Fuzi, who has the ability to write books and speak, cannot do it.

"Have you seen it all?" Yi Xiaoji smiled and looked at the expression of amazement on Yu Moji's face, "This can be called art, right?" ”

Yu Moji groaned slightly, and said, "Is the person who designed this kind of gold cauldron from your clan?" As she spoke, she glanced up at Yi Xiaojiao, "Could it be you?" ”

"No," Yi Xiaocheng smiled and shook his head, "It's my brother." ”

Yu Moji was surprised.

The nine clans of Jiangshan and Chuanchuan have not been able to go ashore for generations, and they have to suffer not only the inconvenience of life, but also a great obstacle to information communication. This state of forever lagging behind the prosperous world is also one of the reasons why the empire must imprison these traitors on the river.

Therefore, it is already very difficult for a skilled ship escort like Yi Xiaowei to appear on the ship; But it turned out that among the nine surnamed clans, she was not the only one who was capable of martial arts.

This is not Yi Xiaojiao's work, but the pride in her eyes is even greater. But after a while, Yi Xiaocheng probably remembered some of the past events between their brother and sister, and the expression on his face quickly changed to a sad look of reminiscing about the past.

She glanced at the ink marks and said, "However, how did you guess that this design came from the Jiangshan ship?" ”

It's not hard to guess.

When Yu Moji was still talking about stealing teachers in Wutang, he had already learned that the so-called art of learning from Yanjia is fundamentally practical; Beauty without function is nothing but a stupid waste.

On land, as long as you have money, you can replenish the Chitose at any time, so there is no need to be frugal and plan for frugality; But on the rivers and seas, no matter how luxurious the ship is, there is a limit to the weight it can carry. What's more, this Feilu Sufeng is used as a merchant ship, loaded with goods that can bring profits, so that the weight of the fuel that burns money is naturally as small as possible.

The Imperial Court of Governors is an official position, and the status given by the government determines that they stand on the opposite side of the merchant and will not worry about such things. Therefore, the person who can come up with such a structure must be from a place like a river and mountain ship.

It is precisely because they endure the pain of being cut off from the world every day, and the thousand-year-old gold that the government has imposed many restrictions is even more rare, so they need such a wonderful method.

"Your brother ......," Yu Mozhen sighed, "it's really enough to be a Yanshi." ”

"Of course he wants to be a Yanshi," Yi Xiaocheng said angrily, "but since his surname is Yi, how can he go to the place of the official mansion?" How can the people on the rivers and mountains be qualified to understand the study of Yanjia? She said, her expression became more and more sad, "How ridiculous, what a brilliant person he is, but he can only stay on the river boat, like me, by feeding pigs to steal a living!" ”

Yu Mochen remembered the male ghost who followed Yi Xiaoji on the Jiangshan boat. Could it be that Yi Xiaojiao's brother? With the figures of two people alone, I really can't tell that they are brothers and sisters.

In any case, Yu Moji was very unhappy about such a fate, she thought about it, and said strangely, "Since it was your brother's design, why did you come to the Wei family's ship?" ”

"Because this position of ship escort was originally my brother's." Yi Xiaocheng said, "Brother, although he doesn't want to leave our relatives, how can a person like him be willing to stay on the boat for the rest of his life?" So he took a big risk and used the seven-fold gold cauldron as a bargaining chip, and finally found such a job to be able to leave the Jiayuan River. ”

"But......" Yu Moji whispered, "Being a ship escort here is just a different waterway......" She felt a little offended, and as she spoke, she gradually relented.

Yi Xiaowei didn't mean to accuse her, just smiled bitterly and nodded slowly, "You're right." Even if he left the ship, his brother could only stay in this bilge every day, and when there was no one, he dared to sneak up on the deck to take a breath......" She maintained that unbearable smile on her face, and she didn't notice that tears had flowed down her face, "but when he talked about life here, he was so happy, as if he had really returned to the world." ”

Yu Mochen was sad to hear this, and blurted out, "Why, he didn't stay here anymore?" ”

Yi Xiaocheng's tears finally dripped onto the board, startling herself. She slowly lowered her head, closed her eyes, and said, "Because he's dead." ”

Yu Moji did not inquire about the cause of death. Some pain is unique to the person concerned, and the death of a loved one is one of them.

For many nights after that, Yu Moji would go to the bottom cabin to carefully observe and explore the ingenious machines in the "Dragon's Heart".

Yi Xiaojiao's brother not only has a work of seven-fold sales of the golden cauldron, but everything in the "Dragon Heart" has been specially improved and designed, all of which convey this person's understanding of the water machine.

This is a rare asset for the entire Yanjia Study. However, because of the suffocating background of their designers, these works of art may forever be hidden in the bilge of this merchant ship.

If any of these items leak out, the Nine Clans on the Jiangshan Ship, which was already branded with the crime of rebellion, are likely to suffer an even more tragic fate because of their involvement in the most important Yanjia of the Great Qi Empire.

This may be the reason why Yi Xiaocheng took the same risk as her brother and left the Jiangshan boat and came to Feilu to be a boat escort.

However, compared to Yi Xiaocheng's former purgatory-like life, it is not a kind of redemption to be a ship guard and devote herself to the realm of Yanjia that she truly loves.

Yu Moji was grateful to Yi Xiaocheng for allowing her to come to see these Yanji that had been hidden in the "Dragon Heart", and also lamented the unfair fate suffered by the Yi Xiaocheng brothers and sisters. But no matter what, she can't forgive Yi Xiaocheng for the evil things she did in the past.

Yu Moji has always believed that no matter how difficult the situation is, it cannot be a reason to hurt others.

Therefore, she thought that discussing the science of Yanjia in "Dragon Heart" was already the deepest contact between her and Yi Xiaojiao.

Anyway, Feilu has already passed Linji County, and after two or three ports, you can reach the imperial capital. When the time comes, Yu Moji will leave the Wei family's ship, and as Wei Ye wishes, he will never have anything to do with the Wei family again, and he will never see Yi Xiaoji in the bottom cabin again.

However, providence is always difficult to fulfill. When the imperial capital was already in sight, something unexpected suddenly happened.

The waterways are hard, and there are few stewards who are willing to follow the boat; And in order to reduce weight and cost, the Wei family will not send too many personnel to the merchant ship. In addition to the skillful team that maintains the operation of Feilu Tracing the Wind, and several warehouse managers and bookkeepers who are responsible for delivery and inspection, most of the rest are sailors.

These sailors have done a lot of ridiculous things.

In the past, when Yi Xiaocheng sent them to follow Yu Moji, they would secretly buy some fresh vegetables and sacrifices; Now that the mission is nearing completion, the sailors are getting more and more excited, and they are becoming more and more disregarded.

I don't know what port it happened in, but they actually got a live pig on board.