Four years of Wude.

A spring breeze hits, and the new year begins again.

After nearly two years of construction, Luoyang, which has been tragically damaged by war, has finally returned to its basic appearance.

A painting depicting the new look of Luoyang was now in Liu Yu's hands.

Liu Yu held the painting in his hand and looked at the scene above carefully.

I couldn't help but feel very happy.

He was not only happy about the new look of Luoyang in the painting book, but also happy about this painting book.

The painting is not a common freehand painting of ink and wash, but a vivid picture depicted with a carbon black pen.

Although it still seems very immature in some details, it has basically become a real sketch of later generations.

"Not bad, not bad!"

Liu Yu praised twice.

"Did you draw this picture book?"

Liu Yu asked a woman in the hall.

"Your Majesty, all these paintings are drawn by my concubine!"

Hearing the emperor's inquiry, the woman immediately replied.

"Haha, I never thought that Gaoping Xi's family is not only a family of classics, but now another generation of painting school is about to emerge!"

After Liu Yu said this, he walked up to him and held the woman intimately back to his seat.

This girl is not someone else

It was Xi Xuan, the daughter of the minister Xi Jian who was relied upon by Liu Yu.

As a family of classical scholars, Xi Jian himself has extremely high calligraphy attainments.

His daughter Xi Xuan is also of good quality.

Not only calligraphy, but also very talented in painting.

Therefore, after Xi Xuan entered the palace, Liu Yu quickly discovered her talent.

Liu Yu immediately told Xi Qi that there is a kind of picture drawn with charcoal pen that can perfectly reproduce the scene.

Xi Xuan, who was as talented as a genius, quickly realized seven or eight points.

In order to test her level, Liu Yue ordered someone to escort Xi Qi to Luoyang specifically to replace the original drawing official.

Now that the results are in hand, it is much beyond Liu Yu's expectations.

"I'm just following the instructions of Your Majesty and making some thoughts. I'm not the originator."

Xi Xuan was halfway in Liu Yu's arms and twisted his body a little uncomfortable.

"Haha, I just said a few words casually. The person who truly understands it is you, and the originator of this school of painting is naturally you."

Liu Yu said, while exerting force on his hands one or two more minutes.

Xi Qi realized Liu Yu's intention and his pretty face turned red.

In the hall in broad daylight, she was so scared that she was dying.

Xi Xuan quickly changed the topic.

"Your Majesty, drawing and painting are just a trick. Why should we pay so much attention?"

This time she went to Luoyang to draw pictures, she was not just herself.

There were as many as thousands of people along with guards, maids, officials and others.

What puzzled Xi Xuan even more was that dozens of children from Yecheng School were accompanying him.

No matter where Xi Xi went, these children followed.

Along the way, I spent time learning her painting skills.

"This is not a trick."

Liu Yu smiled gently? Then he continued.

"These drawings are extremely accurate, not only copying the scenery on top, but also drawing the customs and customs of a place on paper."

"Only by having such detailed pictures, one can we know what seeing is true from thousands of miles away."

When Xi Xuan heard this, he was still a little puzzled.

"Then what's the use?"

"What's the use? It's very useful!"

"Can you tell me one or two?" A girl-school master like Xi Xuan? She is full of curiosity.

"You can not only draw mountains, rivers, terroirs, but also draw terroirs? You can also draw pictures of people."

Liu Yu talked about the benefits in a row.

Finally? Xi Xuan finally understood.

This painting technique you figured out by yourself is still secondary to drawing landscape buildings.

According to Liu Yu's intention, the most important thing is to draw all the mountains, rivers and terrain that the Han army passed by.

"Now all the barbarians and barbarians in various groups have been sent to all directions to fight."

"Now our army is in power, they dare not act rashly, but they dare not guarantee that they will be capricious if there is chaos in the Central Plains in the future."

"So? While our army can control them now, we must grasp the reality of the falsehood and the reality of their territory."

"Among them? Various terrain and mountains are the top priority!"

Liu Yu's words have been kept in his heart for a long time.

Due to the problem of production and supply, the direct control of the Central Plains dynasty over the outside world will inevitably decline.

Once it descends, the barbarians in the border areas will rebel.

However, lack of understanding will often greatly increase the reaction time and it is very easy to miss the best opportunity to counter-rebellion.

Liu Yu had seen the mountains and river maps that the imperial government had previously "treasure".

For the situation of the Central Plains prefectures and counties, these freehand maps are quite useful.

Once you reach the place where the throne rules, it will be completely blank.

There was no map information left for the places where they had fought.

"As long as you have such a detailed map, it is like having a clairvoyance, and you can plan your marching and formation in advance."

Liu Yu said again.

These basic sketches in Xi Qi's hand have used detailed scales.

With a slight change, you can make military maps one by one.

Combined with the iconic sketched scenery, you can achieve complete accuracy of direction.

In the late Qing Dynasty, a large number of European, American, Japanese and Russian travelers and explorers went deep into mainland China one by one, called adventure and investigation. The military drawings they made were basket after basket.

Especially the people sent by the Japanese pirates are as small as a river or a temple, which are all drawn on the map in their original form.

When the Japanese pirates invaded, some national troops who fought against the war in other places were not even as good as those of the Japanese pirates.

Liu Yu's drive away the barbarians and troops to run out at this time was also a helpless move.

He cannot guarantee that this move will be done once and for all.

Therefore, he wanted to take this opportunity to leave some useful reserves for future generations.

"Your Majesty is very fortunate and has plans for his descendants."

When Xi Xuan heard this, the children he taught were so useful in the future.

She couldn't help but feel proud.

"Haha, of course I am lucky to do this!"

"Maybe if you truly have a reputation for the ages, you have to rely on these few charcoal-brushed paintings."

Liu Yu said, while ordering the eunuch beside him to carefully guard the picture books.

Xi Xuan also took this opportunity to sneak out of Liu Yu's arms and sat bently beside him.

She was born into a family of ethics and was very strict about her identity.

However, Liu Yu just likes this girl's serious appearance.

His favorite thing, who has been poisoned by feudalism, is now the shy look of these serious girls.

However, Liu Yu is still not in a hurry now.

Because he still has nothing to do.
To be continued...