The simulation robot told Liu Zhang the full situation by message, and he learned that Chen Yun had encountered a little trouble.

Liu Zhang really wanted the simulator robot to beat Lu Zhi and them, but after thinking about it, this might cause trouble for Chen Yun.

Fortunately, Chen Yun is about to arrive outside Luoyang City, protected by a simulated robot.

She will not be in danger, as long as she leaves Luoyang.

It is difficult for those people to catch up, and it is very inconvenient to travel in this era.

If Lu Zhi and the others want to chase after them, they will have to go to the local government to handle the summons.

At the same time, Liu Zhang received a message from the simulated robot in Huainan Kingdom, and Zhao Ci was also preparing to return to Honghou Kingdom.

She didn't say hello to Liu Ling either, and Liu Zhang sent a manned drone from the Red Marquis Kingdom.

To take Zhao Ci back to Honghouguo, Liu Zhang asked the simulated robot to ask Chen Yun if he wanted to take an unmanned plane back to Honghouguo?

He quickly got a reply, and Chen Yun said no, there were more than 100 people traveling with her.

can't be too high-profile, drones are Liu Zhang's life-saving cards.

It must not let more people know, only Liu Zhang and his three wives know about it at present.

In the future, if there is great danger, you can use drones to transfer family members.

Chen Yun is not in much danger at present, so there is no need to return by drone.

Zhao Ci is different, she is in Huainan Kingdom, as long as she does not leave.

The king of Huainan ordered the blockade of the entire Huainan country, and it would be difficult for her to leave.

Although Zhao Ci has an invisibility cloak in his hands, there is a time limit.

Zhao Ci took the simulated robot and the sleeping Shen Bu to return to the Red Marquis Kingdom by drone, and arrived at the destination after about half an hour.

Zhao Ci asked the simulated robot to report Liu Zhang's safety, and she took a plane for the first time.

I felt the excitement of the plane, and I could see the white clouds in the sky when I sat in the plane.

Seeing objects as small as ants on the ground, she learned that drones can reach speeds of up to 1,000 kilometers per hour.

Liu Zhang remotely controlled the drone, allowing Zhao Ci to feel what it was like to be on a plane.

From Shouchun to Honghouguo, if at the fastest speed.

It took about six minutes to arrive at Honghou Kingdom, and Liu Zhang adjusted the flight time of the plane to half an hour.

Zhao Ci entered the Honghou Mansion, and the drone took Shen Bu to Chang'an.

It is not necessarily safe to stay in the Honghou Mansion, and the king of Huainan may send someone to kill Shen Bucho.

Liu Jian was in Chang'an, and asked him to arrange someone to take care of Shen Bucho.

Before leaving Huainan, Zhao Ci left a farewell letter.

Liu An's illness is almost better, if you say hello to them before leaving.

They would use all kinds of methods to keep her, so they asked the android robot to contact Liu Zhang.

Let him arrange a drone to take her back to Honghou Kingdom, and try not to go to Huainan Country in the future.

On the first day of December, there were several heavy snowfalls in the Guanzhong area, and the surroundings of Chang'an City were covered in snow.

During this time, Liu Zhang was proficient in the work process of the Shang Fang Agency, and he was mainly responsible for improving some weapons.

The craftsmen saw him as too young and thought he didn't have that much experience in making weapons.

They think that Liu Zhang came here to study and prepare for becoming an official in the future.

They were wrong, Liu Zhang was brought by Liu Che.

The emperor's orders could not be violated, and these craftsmen considered him to have no experience.

Liu Zhang didn't behave too well in front of them, but just consulted with them.

First of all, the sword master was improved, and there were many experiments in the past few days.

The range and penetration of the arrows increased, and Liu Zhang had craftsmen make armor-piercing arrows according to the drawings he designed.

These craftsmen are very cooperative, and they are all highly skilled craftsmen.

Seeing that Liu Zhang is too young, can he really do it?

If the technical advisors sent by the emperor were thirty or forty years old, they could still trust each other's abilities.

can send a young man who is less than twenty years old, is there no talent in the imperial court?

They thought it was unlikely, but they couldn't figure it out, why let a young man come to Shang Fang Agency as a technical consultant?

They don't dare to ask more, they think they just need to do their own thing.

Everyone came to the school field, and Liu Zhang personally conducted an archery experiment.

In the past few days, under his guidance, the arrows have been improved, and today the experiments are carried out on the armor-piercing arrows.

Li Guang also came to watch the experiment, and he would report the results of the experiment to Liu Che.

Liu Zhang was concentrating, the arrow in his hand had been wound, and some craftsmen were looking at how effective his recent improvements to the armor-piercing arrow were.

The arrow flew off the string, and in an instant, it hit the iron armor three hundred and fifty paces away.

Liu Zhang asked the iron armor to be thicker and beaten repeatedly.

It is necessary to meet the standard of armor worn in actual combat, so that the armor-piercing ability of the armor-piercing arrow can be tested.

The armor-piercing arrow pierced through the armor, and the craftsmen saw that the entire arrow had passed through.

Liu Zhang used a non-armor-piercing arrow to test fire, and the arrow touched the armor.

The arrow bounced off, only a shallow dent in the armor.

The Xiongnu did not have such a powerful armor-piercing arrow, if the Han army used this kind of armor woven armor.

It can play a good role in protection, after the technical improvement provided by Liu Zhang.

Such armor has high protection and is lighter than the armor being used.

This can reduce the consumption of physical strength, and Liu Zhang felt that the heavy armor was not suitable for the Han army to wear on the march.

He had craftsmen follow the techniques he provided to create composite armor pieces that were light in weight and high in defense.

The Han army was still able to move freely, although the armor worn in the past was protective.

After wearing it, it will make the body inflexible and will also greatly consume physical strength.

"Whether it's an armor-piercing arrow or an armor piece, it has achieved the desired effect."

Liu Zhang was very satisfied with this experiment, which reminded Liu Zhang of the fable of the spear and the shield.

The improved armor-piercing arrows and armor pieces of these days are like the sharpest spears and the strongest shields.

"I'll try it and see how high the armor protection is."

Li Guang was very interested in the weapons improved by Liu Zhang and the craftsmen, and he felt that Liu Zhang was really a genius.

Liu Zhang provided the Han army with iodophor and alcohol, which greatly reduced the number of Han soldiers who died due to injuries and infections.

Without these two things, the Han army would not have died immediately if it was wounded.

They were injured, were not infected, were not effectively treated, and eventually died.

Last year, there were many battles with the Xiongnu, and many Han soldiers were injured.

Most of the Han troops survived, and they were able to return to the battlefield.

Liu Zhang's contribution is indispensable, two seemingly inconspicuous potions.

But it was able to save the lives of many Han soldiers, who often shouted "Long live the Red Marquis".

"Please General Li try it, your strength is greater than mine, and you can penetrate the armor piece deeper with this armor-piercing arrow."

Liu Zhang handed the bow and arrow to Li Guang, and his arm strength was amazing.

Li Guang took the bow and arrow in his hand, and it only took a few seconds to pull the bow and take the arrow to release the arrow.

The arrow shot by Liu Zhang did not use all his strength, and he could break through the armor with one arrow.

The arrow that Li Guang shot out, the arrow and part of the shaft of the arrow passed through the armor.

Everyone was dumbfounded, the arrow shot by Li Guang was more powerful than the arrow shot by Liu Zhang.

"This arrow is indeed very strong in armor-piercing ability, if it is used to deal with the Huns, the Huns will definitely die or live."

Most of the Huns wore leather armor, and this armor-piercing arrow could easily penetrate the leather armor.

Even in the face of the Huns wearing iron armor, they can easily break through.

The power of the armor-piercing arrow has increased a lot compared to the previous one, but I don't know how powerful the armor-piercing arrow is to the iron armor?

"This armor-piercing arrow can easily pierce armor, and if it can penetrate the iron gauntlet, it would be great."

In just a few days, the range and penetration of the armor-piercing arrow have increased a lot.

Li Guang asked people to bring the iron armor, of course, to use the equipment used in actual combat for experiments.

This is responsible for the life of every soldier, and the iron scorpion is fixed to the wooden frame.

Li Guang pulled his bow and arrow, aimed at the iron armor, and the armor-piercing arrow penetrated the iron armor in an instant.

He went to inspect it himself, and the whole arrow pierced through the iron.

If you shoot an enemy with such an armor-piercing arrow, you will definitely kill the enemy on the spot.

"General Li, the armor-piercing arrow has been improved. If the iron armor and iron armor are improved, the armor-piercing arrow may not be able to penetrate, and its weight will also increase. ”

This is a very contradictory thing, whether you want to be invincible or you want to be unbreakable.

You can't have both, and for now, armor-piercing arrows and armor shards have high enough penetration and defense.

"As long as these two things don't fall into the hands of the Huns, we have nothing to worry about."

These weapons and armor must not fall into the hands of the princes and kings, so that they can have stronger armies.

This is not Liu Zhang's responsibility, weapons and armor are managed by special personnel.

"How's that hot air balloon making going?"

Li Guang also heard that craftsmen made hot air balloons during this time, if they could be put into use on a large scale.

Even if you don't transport the army, it's not bad to use it to transport grain and grass.

But someone had to control the hot air balloon and deliver the food to its destination.

"There are some advances that cannot be put into use at the moment, and we will make further improvements."

To solve the problem of hot gas stoves and airbags, the problem of wooden baskets was solved.

The most important thing is fuel, and Liu Zhang mentioned fierce fire oil to Liu Che.

Let him send someone to find it, and Liu Zhang used the simple oil refining method to refine.

The amount of refinement cannot be too high, and only a small amount of hot air balloon can be used.