At the end of the Han Dynasty, there were no Three Kingdoms at the end of the Han Dynasty

You can visit relatives in Luoyang City, but you can't stay out of time, and you can't meet anyone privately, and you have to report to Liu Yu every time you leave the palace.

Cai Yan and his daughters went to Luoyang Women's Academy every time they left the palace, and they were all under the strict protection of the imperial guards.

They will not contact anyone on the way, and Cai Yan and his daughters also know the seriousness of the matter.

Even if Cai Yan sees Cai Yong and Zhen Jiang Zhen Mi sees their younger brother, they will never see each other outside.

They will send people to lead them to the former Zhenbei Palace, and under the watchful eyes of everyone, tell them about their family affection.

Liu Yu also knew how depressed it was to be in the palace all day long. Liu Yu would not let his concubines repeat the tragedy that happened to his mother.

Now Empress Dowager Dong, unless she gets tired of staying in the palace, will occasionally live in the palace for a few days, and spend the rest of the time playing with flowers and plants in the palace.

Although some do not conform to the rules, but Liu Yu is the rules, as long as Liu Yu acquiesces, then no one will raise objections.

Every few days, Liu Yu would accompany his concubines and Cai Yan to go out of the city to relax.

As for the safety issue, there is no need to think about it at all. No one can hurt Cai Yan and his daughters under the protection of [-] imperial guards.

During a trip, Liu Yu accompanied several of his concubines, as well as Cai Yan, to Gucheng in the west of Luoyang to play.

Passing a mountain, Zhen Mi sniffed vigorously in the carriage when she reached the front foot, and smelled the fragrance of flowers and plants.

So, Zhen Mi casually opened the curtain of the car, saw the mountain, and saw that it was picturesque, and the air was unusually fresh, revealing the fragrance of flowers and plants.

Zhen Mi suggested that they want to camp here and let Liu Yu do it again to roast some wild game for them.

Liu Yu had originally accompanied them out of the city to relax, so naturally he would not refuse, so they found a place at the foot of the mountain with a wide view and close to the river.

On the grass, a cloth blanket was laid out, and then the grill was set up, and after receiving the game from Dian Wei, Liu Yu began to grill it for the girls.

After the laughter and laughter, Liu Yu accompanied the girls to finish the barbecue, and then led the girls to the river to wash off the oil on their hands.

At this moment, Liu Yu suddenly heard Zhen Mi's exclamation, Liu Yu tensed up instantly, got up quickly, and ran towards Zhen Mi's direction.

And Dian Wei and Xu Chu, who were in the distance, also let go of their girls, leading the black guards and ran towards this side.

After a few breaths, Liu Yu came to Zhen Mi's side, looked around, and found no danger.

Liu Yu couldn't help looking puzzled, and looked at Zhen Mi who was looking happy, waiting for her explanation.

Seeing Liu Yu's suspicious gaze, and seeing the guards who had come not far from them and were on guard, Zhen Mi couldn't help sticking out her tongue at Liu Yu apologetically.

Afterwards, Zhen Mi stretched out her small hand, pointed to a certain stone in the river, and said happily.

"Your Majesty, look, that small stone is round and has several colors, so beautiful! Besides, there are three pure white stones beside it, as if they are guarding it."

After finishing speaking, Zhen Mi stretched out her hand to grab Liu Yu's arm, bouncing around, her face full of joy.

Liu Yu was speechless when he heard this, Zhen Mi, a girl, is married and still like a little girl, she still likes these weird things.

Feeling his arm being shaken constantly, Liu Yu looked helplessly in the direction of Zhen Mi's finger.

It was indeed as Zhen Mi said, that stone was indeed very beautiful, seeing that Zhen Mi liked it, Liu Yu wanted to take off his shoes and wanted to salvage it.

Seeing this, Xu Chu and Dian Wei jumped into the river without taking off their shoes to salvage stones together.

How dare they bother His Majesty to take care of such a trivial matter?

However, both of them want to salvage stones for their majesty, just like they are fighting for the head of an enemy general, you fight each other.

In the end, the stone was indeed salvaged, and the colorful stone, intact, was snatched by Dian Wei.

But those few white stones were accidentally broken by Xu Chu in the struggle.

However, Zhen Mi was not angry, but instead looked at Dian Wei and Xu Chu with a smile on their faces.

"Your Majesty, the general...the general crushed it...it's not the general's fault, it's because the stone is too brittle, I didn't even use my strength..."

Xu Chu stretched out his hand in embarrassment, and said to Liu Yu with a blushing face.

Hearing this, Liu Yu shook his head with a headache on his face. If these two guys were ruthless and cut them off, he would definitely live for a while longer.

Suddenly, Liu Yu was stunned. He saw Xu Chu's entire palm was dyed white.

"what?!"

Liu Yu couldn't help being startled, and then reached out to touch Xu Chu's palm.

Xu Chu thought that his hands were dirty and displeased His Majesty, so he immediately bent down and wanted to wash them with river water.

"do not move!!"

Suddenly, Liu Yu yelled, and in an instant, Xu Chu was frozen in place, not daring to move.

Liu Yu reached out and touched some white powder, then put it under his nose and smelled it, but there was no smell.

Moreover, these powders were not pure white, but a little dark gray. Liu Yu couldn't help but shook his head in disappointment.

Suddenly, Liu Yu's eyes lit up, as if he had thought of something, he remembered that this kind of stone had to be calcined at high temperature.

It will eventually form pure white, and it will need to be watered to make it react.

The name of later generations is lime powder!In this era, there is also the existence of lime powder.

However, there are not many uses of lime powder. It is only used to seal the coffin when the corpse is buried.

Preventing corpses from getting damp and decomposing, or pests and rats getting into coffins, most of them are used by aristocratic families, and ordinary people don't pay much attention to them at all.

After seeing these powders, Liu Yu thought that adding calcined lime powder to wood pulp would definitely have the effect of removing impurities and whitening.

"Hahaha! That's true!"

After thinking about the use of lime powder, Liu Yu couldn't help laughing up to the sky. Xu Chu and Dian Wei were confused by this scene, but they didn't dare to ask.

Even Xu Chu still maintained a half-bent posture. Liu Yu didn't speak, so he didn't dare to move.

"Get up and drive back to the palace!"

With a happy smile on Liu Yu's face, he waved his hand and ordered to go back to the palace.

Although Cai Yan's daughters were puzzled, but based on their understanding of their own man, they naturally knew that Liu Yu must have something important to deal with at the palace.

Although they usually like to pester Liu Yu, they are all people who know the importance, so naturally they don't ask too much. They just listen to what their men say.

Afterwards, a large group of people returned to Luoyang City mightily.

……

Chapter 560 Han Paper Printing

After Liu Yu returned to the palace, he immediately sent someone to summon Ma Jun, Huang Yueying, and Liu Ye to the imperial study.

After receiving the emperor's summons, the three of them immediately set off to Liu Yu's imperial study without stopping.

Liu Yu told the three of them about the lime powder and explained its function.

This made the three of them overjoyed, their faces flushed with excitement.

If these white powders can really be as the emperor said, then it can't be perfect.

After learning the effect of the lime powder, the three of them seemed impatient. Seeing this, Liu Yu smiled slightly, and then waved the three of them to leave the place.

After returning to the research and development institute, the three of them quickly called together the paper craftsmen and worked with them to research and make new types of paper.

The paper added with lime powder is indeed white and bright as the emperor said, but it cannot be added too much.

If you add too much, it will make the paper fragile and easy to break, and you can't just add lime powder.

After repeated production many times, everyone can grasp the dosage, but after the wood pulp is added with lime powder, no matter how the dosage is controlled, the adhesion of the paper will become poor.

It is very fragile, and the paper will break after shaking it a few times. For this reason, Huang Yueying proposed again.

In wood pulp, add some transparent resin to increase the adhesion of wood pulp.

Sure enough, after adding the transparent resin, the paper did become stronger and more durable.

Soon, the paper was repeatedly improved by Ma Jun and Huang Yueying, and finally, the first batch of new paper was born.

After the paper was released, the three of them couldn't wait to go to the palace. They wanted to inform the emperor of the good news as soon as possible.

When Liu Yu held this white and bright paper as thin as a cicada's wing, Liu Yu's hand also trembled slightly because of excitement.

How can he not be excited?Don't underestimate this kind of paper, its appearance will greatly change this era!

People will bid farewell to the heavy bamboo slips, and the students of the academy will also use this white paper, and all books will be recorded on it.

And these are just a small part of them, and there are many conveniences that will be manifested one by one in the future.

With a wave of his hand, Liu Yu rewarded all the staff of the R&D Institute and announced it to the world!

Subsequently, Liu Yu began to build a paper factory in every state regardless of loss, and sent soldiers to protect it.

It took several months and dozens of factories to complete the construction of the factory.

Why did it take so long?Because these factories are not only for making paper, but also for making more objects in the future.

For example, the printing technique that Liu Yu is currently studying with Ma Jun and others is simpler than papermaking.

The only difficult thing is to carve these characters. The most corrosion-resistant, durable wood should be selected for the wood.

With more than a hundred craftsmen rushing to work day and night, after half a month, these characters were finally carved.

And the engraving didn't stop. After engraving this batch, there will be another batch of characters. Every factory can't have only one set of characters.

Moreover, there are dozens of factories, and the future workload of these carving craftsmen can be imagined.

Arrange these engraved characters according to the handwriting on the book, and put them into a paper-sized iron frame.

On the raised font, apply ink evenly, not too much, then cover it with paper, gently wipe the back of the paper, and the writing will stay on the paper.

Then the papers are sorted, the front and back covers are made of cowhide, holes are punched, and they are tied with ropes. In this way, a book is finished.

A Confucian classic composed of hundreds of bamboo slips only uses a hundred sheets of paper to make a book.

On the printed paper, the strokes are clearly identifiable, and every word is exactly the same.

That font, one stroke at a time, is as thick as a mountain. When people read it, they can't help but feel admiration. Just one word can tell the arrogance of the person who wrote it.

It took Liu Yu several days to write this word himself, and then the craftsmen carved it carefully as if they had found a treasure.

With the success of the printing experiment, Liu Yu ordered the factory to rush to work day and night to print all the contents of the books in the Han Dynasty, and then store them in the palace.

After that, various educational books began to be printed on a large scale, and they were given priority to the academies for teaching, and some precious books were naturally not allowed to flow out.

When Zheng Xuan, Cai Yong and others got the books, they couldn't help crying.

The hands holding the book were trembling, the movement was gentler than holding his own child, for fear that if he was not careful, he would damage this peerless treasure.

Afterwards, under the leadership of Zheng Xuan and Cai Yong, the students of the entire academy gathered in the central square of the academy, facing the direction of the palace, and bowed devoutly.

Not only Zheng Xuan, Cai Yong, Xun Shuang and the others were shocked, but the whole world was shaken by the advent of paper and printed books!

Countless poor students regarded the emperor Liu Yu as a saint of a generation. He not only saved the great man, but also saved the entire great man's literature.

In the past, when the gentry existed and ravaged the big men, Liu Yu was hated by all the gentry and students.

Today, such a big change has taken place, and there are many reasons for this.

Some reasons are understandable, while others are extremely realistic.

No matter what they think of Liu Yu, it doesn't matter to Liu Yu, what Liu Yu wants is the result, he doesn't care about the process!

Today, the construction of the academy houses in the south of the Yangtze River is almost completed, and the construction of the academy in the north has also restarted.

As for the residential cities in the north, including water conservancy, etc., they have been repaired long ago.

Liu Yu estimates that in the second half of this year, it will be completely realized. There will be an academy in every city.

And next year, various academies will be able to recruit students, and finally, an imperial examination will be held every year to absorb fresh blood for the big man.

Another thing is that Jiaozhou is far south of Jingyang. Although Jiaozhou is the southernmost point of the Han Dynasty, it is also an inseparable part of the Han Dynasty.

Moreover, if the navy develops again in the future and wants to go on an expedition, then the importance of Jiaozhou will be fully revealed.

Jiaozhou can be used as a place where the navy is stationed, starting from Jiaozhou, you can reach many overseas countries.

Although today's navy does not have this strength, after several years of development.

The strength of the Han Navy will definitely rise to another level. By then, it will no longer be a dream to completely conquer the sea!

However, Jiaozhou's geographical location is remote, the roads are blocked, and its population is only a few hundred thousand.

For this reason, sending a large army to attack is obviously not worth the loss. Fortunately, Baiyue in the north of Jiaozhou has already moved to Jingyang.

The barrier blocking the gateway to Jiaozhou has disappeared, if Sun Ce, who is familiar with the terrain, is sent.