In Ningzhou, Xu Mochen arranged things and took people back to Beijing.

Since his identity has been exposed, he has not concealed it, and of course he will not make a big fuss.

Xie Jing decided to join Xu Mochen's National Medical Center, and also followed him to the capital, so Shu Wuyin walked with him.

However, she didn't come to Xu Mochen, her personality was unsociable, and she just stayed around Xie Jing.

In this era, travel mainly relied on horse-drawn carriages, and with a large number of people, the speed of action was not fast.

"Your Majesty," Tang Derun rode his horse to the carriage where Xu Mochen was, "In front of it is Yuhuatai, and the process of forging gold leaf that the Fang brothers and sisters said is nearby. ”

Xu Mochen remembered that it was still difficult to overcome the manufacture of injection needles, and when discussing, Fang Minghang and Fang Mingying, brothers and sisters, mentioned the gold foil forging technique of Ningzhou Yuhuatai.

It is said that it can beat gold as thin as paper.

In the troubled times, the regime was divided, Ningzhou was the territory of the former Southern Guard, and Buddhism was more prosperous, so there were many Buddha statues in the palace, all of which used gold leaf.

Subsequently, other countries also came to visit, and this skill became the national key protection object of the former Yugoslav Guard.

After the reunification, Xu Mochen did not have time to build a large number of buildings, the palace was not expanded, and there was no palace or anything like that, and he did not care about the construction of temples.

However, the skills are well preserved.

"Go and see," Xu Mochen will not let go of any opportunity, "Folk skills sometimes give surprises." ”

The convoy changed direction and headed for its destination.

When I arrived, I saw a large number of buildings, which were not small, but they were deserted and did not seem to be popular.

Tang Derun stepped forward to say hello, and soon a group of people walked out of it.

All of them are rugged, their arms are full of muscles, and their palms are covered with calluses, so they should be the craftsmen here.

Tang Derun told the matter, and a middle-aged man bowed to show that he understood.

Here, Xu Mochen got out of the car, followed by Shen Zhining and others, and when the group of people saw it, they wanted to salute again.

"Excuse me," Xu Mochen waved his hand, "I heard that you have been engaged in the art of forging gold leaf for generations. ”

"Your Majesty," the middle-aged man stepped forward, "the grass people are victorious, and the grass people are honest."

The Wang family has been engaged in gold leaf forging for five generations.

If you are unified today, Your Majesty is the king of the world, and he is dedicated to government affairs, and there is no civil construction, so in the past two years, the amount of gold leaf has decreased a lot. ”

Xu Mochen nodded: "The demand is small, but it doesn't mean that the technology is useless, you can do transformation." ”

Wang Sheng said he didn't understand what transformation was.

The group entered the hall casually talking, Xu Mochen sat down, and the rest stood down.

He motioned to Tang Derun, who stepped forward and took out the injection needle.

"I want to ask you if you can build something like this, or if there's anything you can do." Xu Mochen picked up the tea bowl casually and took a sip.

Wang Sheng took it over and looked at it carefully, and couldn't help but be surprised: "Your Majesty, although this thing is small, it is rare to have exquisite craftsmanship, especially this needle, which is still hollow." ”

Xu Mochen said that don't underestimate this thing, it can only be made on the basis of modern industry.

In this world, if it weren't for the help of immortal cultivators with immortal arts, it would be difficult to create it.

"The material of this thing, non-iron, non-copper, non-gold, non-silver," in the end, is the craftsman who has been engaged in forging in the past dynasties, and the vision is still there, Wang Sheng said his opinion, "When the grass people traveled to the rivers and lakes, they had seen an extremely hard metal, called white steel. ”

"Good eyesight," Xu Mochen almost applauded, "Is it difficult to smelt." ”

He knew it was stainless steel, not the same as steel.

"It's very difficult," Wang Sheng didn't deny, "It's just smelted by accident, and I don't know how much more manpower and material resources it will cost."

In many places, it was made into an important weapon, the sword, for the use of members of the royal family. ”

In other words, with the current technology, it is impossible to smelt stainless steel in large quantities.

Xu Mochen was not discouraged: "Then according to Mr.'s opinion, can there be a way to replace or improve." ”

"The grass people have some ideas," Wang Sheng frowned, "but the grass people don't know what His Majesty wants this thing for." ”

Zhao Lingbo smiled, and she stepped forward to explain.

"It's used to inject water and the like," Wang Sheng understood, "and it's going to pierce the human skin, so the grass people have an idea, and they don't know if it's okay to use iron tools." ”

Xu Mochen didn't understand very much, he looked at Shen Zhining.

"It's okay," Shen Zhining searched, and there was no way to find a solution, "but the main thing is this needle......"

"It's really difficult," Wang Sheng affirmed, "to be so sharp and small, with all due respect, we can't reach it with our skill level, but if it's acceptable for coarseness, there is a way." ”

Xu Mochen and Shen Zhining glanced at each other: "I want to hear about it." ”

"Grass people have been engaged in forging for generations, and they have found that different materials have different firing temperatures," Wang Sheng explained, "For example, silver is better than iron to burn." ”

This Xu Mochen understands that the melting point of metals is different.

"Therefore, the grass people believe that it can be made with two molds," Wang Sheng began to explain, "the first time the mold is small, to make a solid needle, but this time the material can be made with gold and silver."

Then, outside it, make a larger mold, fill the hollow place with wax, and then inject molten iron to make it cool and set.

In this way, the surface is iron, and the inside is gold and silver, which is easier to burn.

The third step is to melt away the solid gold and silver inside, and you can get a hollow needle. ”

Xu Mochen couldn't help but stand up, using the melting point of the metal to deal with it, it sounded very reasonable.

"Will it work?" Xu Mochen asked.

Shen Zhining shook her head, this is a technique that Du Niang doesn't know, no one has ever done this.

"The temperature at which molten iron melts is higher than that of gold and silver," Xu Mochen muttered, "The second pouring will melt the gold and silver." ”

Wang Sheng also thought of it: "So this step is very crucial, as soon as it is poured in, it will be cooled immediately."

And this thing is very small, I'm afraid it will be more difficult to operate.

If His Majesty can still accept larger needles, then there are other options, but it is more painful to use. ”

No matter how painful it is, it is better than losing your life.

"Sir," Xu Mochen stepped forward, "the method you said, can you help me to make it, this is a matter related to the livelihood of the people in the world, I ask Mr. to help." ”

Wang Sheng hurriedly saluted: "The grass people are just people from the countryside, they only have one skill, they can serve His Majesty, and the grass people are willing to smear their livers and brains."

It's just what I just said, it's just the idea of the grass people, and it actually needs to be operated to know, and it is not impossible to improve it slowly. ”

"No matter how difficult it is, you have to start," Xu Mochen turned around, "How much gold and silver are copied out of King Ning's Mansion?" ”

Tang Derun coughed and stepped forward to report in a low voice.

"Ship them all," Xu Mochen immediately decided, "You can't work in vain, you need to be paid."

In addition, if you need any materials, you will report it directly in the future, and I will personally inquire about this matter. ”

As long as you can get an injection needle, no matter what the cost, you have to pay it.