Ming Zuo

The fact that vaccinia can completely prevent smallpox immediately broke through the haze hanging over everyone.

For thousands of years, the plague has caused too much suffering to human beings, and it can even be said to be the greatest enemy of human survival.

Everyone understands the meaning of being able to win the battle now.

"Your Highness, everyone must be vaccinated immediately."

Hou Xun didn't want to wait any longer.

"Not only that, but please also order, Your Highness, to strictly keep the secret of cowpox."

Li Banghua thought of more.

Now the plague has spread and is causing disasters on a large scale.It can be said that whoever can defeat the plague one step earlier will be able to take the lead and take the absolute initiative in the general situation of the world.

Think about it, if Xia Guo rolled out the vaccination of smallpox in an all-round way, making the threat of smallpox completely ineffective, then more people would be preserved.

And population is power.

On the contrary, because of the loss of a large number of people, the strength of Xia's enemies must be greatly weakened.

When one goes up and the other goes up, the balance of strength will inevitably tilt completely.It can reduce more obstacles when Xia Kingdom unifies the world in the future.

Now the secret of cowpox is only known to a small number of people, as long as it is used properly, it is the most powerful weapon.

Zuo Menggeng accepted all the proposals of the two prime ministers.

"Just do it like this."

Vaccination first started in the army.

After all, it is now in a state of war, and ensuring the combat effectiveness of the army must be given priority.

Although there is no suitable tool at hand, it is still possible to deal with it with the same method as Lu An.

All the medical personnel were gathered together, and Lu An walked up and down in front of them seriously.

"Now read out the confidentiality regulations. About the preparation, storage, and application of vaccinia, you must not spread it to the outside world. Even your relatives must not tell it. If there is any disclosure, you must be severely punished."

All the medical workers became serious, keeping her words firmly in their hearts.

The subsequent collection of cowpox was also carried out in complete secrecy.

Under the protection of soldiers of the Xia Army, medical workers went deep into various parts of North Korea under the pretext of detecting the epidemic, looking for livestock with cowpox, and then secretly collected them.

The collected vaccinia will be put into glass bottles and then sealed.Then put it into an incubator filled with ice cubes and freeze it for storage.

This is currently the only way to preserve it.

In addition, Lu An also led people to analyze the optimal vaccination dose for vaccinia.

Although there is no way to do it in the process of inoculating the army, these data provide a guarantee for the full deployment of vaccinia in the future.

In order to complete the vaccinia vaccination for everyone in the Xia Kingdom, it is necessary to have professional tools.

That is, needles and needles.

Cutting a cut with a knife like Lu An, and then asking the cowpox to smear it in, is too rough.

First, this method will cause the wound to bleed, which is not conducive to the absorption of vaccinia;
Second, there is no way to carefully control the dosage of vaccinia in this way;
Thirdly, this method will cause a great waste of vaccinia.

To overcome these three shortcomings, professional needle tubes and needles must be provided.

Zuo Menggeng has already ordered all the glass factories in Xiaguo to start producing needles with all their might.

There is no plastic in this era, and the only raw material that can be used to make needles is glass.

In addition, the push tube in the needle tube is also made of glass.

Although limited to the level of craftsmanship, there is no way to achieve a tight combination of the needle tube and the push tube, but the medical workers still thought of a way to overcome it.

That is to wrap the push tube with extremely thin leather so that it can completely fit the wall of the needle tube.

If the manufacture of the needle tube is relatively easy, then the needle head has become a huge problem.

"Master, you have to come forward for this matter. None of the craftsmen in the factory has passed the test."

At Yang Gui's home, Jiang Feng, the factory manager, came to the door and asked the master to do it himself.

Now Yang Gui is over seventy years old, so he stays at home and takes care of himself.

He was playing with his great-grandson in his arms, and when he saw the blueprint Jiang Feng handed over, he angrily taught him a lesson.

"I told you a long time ago, don't be so superstitious about machines. In the end, craftsmanship is the foundation. Even His Highness said that the level of craftsmanship is always ahead of machines. But you don't listen, thinking that we old guys are nagging. How is it now, have you stumbled?"

Jiang Feng was scolded like a dog, and laughed endlessly.

"Now everyone knows that they are wrong. I have to ask Master to help you with this matter. His Highness has issued a strict order. If you can't complete the task, everyone will have to eat melons."

Yang Gui handed his great-grandson to the nanny, turned his head and walked out.

"Call me all those old guys."

Seeing that he finally made a move, Jiang Feng was overjoyed.

"Don't worry, all uncles and apprentices have been notified."

For this era, needlework is extremely difficult.

It must be thin enough, vacuum, hard enough, and sized, and it must be able to fit with the needle tube.

After these requirements were conveyed to the factory, everyone immediately felt tricky.

They worked tirelessly and tried several times, but they failed at all.

In desperation, Jiang Feng thought of his master Yang Gui.

The earliest craftsmen of the Xia Kingdom were best at hand-made.

The barrel of Xia Guo's first cap gun was punched out by Yang Gui himself.

According to Xia Guo's craftsmanship rating, Yang Gui is the only master craftsman in the field of metal manufacturing.

In the factory, Yang Gui got together with those retired master craftsmen and took over the task of making needles.

"Old Xingtou, you go first and grind a small iron rod out. You already know the exact size, can you do it?"

Old Xingtou was gearing up, full of confidence.

"Brother Yang, don't worry, if I can't make this thing, you will grind me down."

After all, the old Xingtou ordered to his apprentice: "Bring me my reading glasses, and what else are there."

He said to Jiang Feng again: "You juniors are not very skilled, so it's okay to make an embroidery needle?"

Jiang Feng nodded like pounding garlic.

"No problem, no problem. Old Uncle Xing, please wait a moment, and I will make it right for you."

Embroidery needles are one of the products in the factory, and there is no technical difficulty at all.It was produced quickly and sent to Lao Xingtou.

Embroidery needles are slender enough, but too thick for needlepoint.

Under the watchful eyes of everyone, Lao Xingtou clamped the embroidery needle with a vise, then picked up the file, and began to grind it patiently and meticulously.

He wants to grind the embroidery needle finer and keep the surface smooth and flat.

It seems simple, but now looking at the world, he is the only one with this skill.

On the other side, Yang Gui was not idle either.

He asked someone to turn on the furnace, boiled molten iron, and then led it to a pool to cool.

The whole process was well controlled by him, and there was only a thin layer of molten iron flowing into the pool.

Not only that, but Yang Gui personally used an iron roller to roll back and forth in the slowly cooling molten iron, making the molten iron thinner and thinner...

In the end, the molten iron was cooled and formed, and when picked up, it was as thin as paper.