Hot air balloons are able to jump over some obstacles without having to take a bridge ferry.

Fly over not very high mountains, which is much faster than deep transporters.

And it can send a lot less people, reducing the transportation time.

To reduce the consumption of grain and grass, Liu Che hopes that hot air balloons can be used on a large scale.

He decided to establish a military academy to train military personnel.

Shang Fang Department is equivalent to a scientific research institute, so there is no need to set up a separate scientific research institution.

Li Dang watched the hot air balloon slowly rise, and his efforts during this time were not in vain.

The crowd cheered, and the man standing on the hot air balloon watched as he left the ground.

The person standing on the hot air balloon is both excited and scared, afraid that the hot air balloon will suddenly fall.

The hot air balloon is constantly rising, and it is not difficult to land the hot air balloon.

Let the balloon have the same temperature inside and outside, and the hot air balloon will land at a uniform speed.

Next, it's time to train some people to operate the hot air balloon until they become proficient.

Learn how to control the hot air balloon and then teach others so that more people will use the hot air balloon.

Seeing the hot air balloon getting higher and higher above the ground, the people on the ground were excited.

Their efforts for so long were not in vain, and the hot air balloon could not go too high.

The higher you go, the thinner the air and the cooler it gets.

After a while, the hot air balloon landed, and the person standing on the hot air balloon felt good.

It feels so good to fly, and the people on the hot air balloon have initially mastered the operation method.

More operation details still need to be proficient, and during this time, Ligan will arrange some people to practice hot air balloon operation.

Months of training should be proficient, and everyone has an excited smile on their faces.

This is the result of everyone's joint efforts, and when the emperor knows about it, he may reward them.

"What do you think of hot air balloons? Are there any shortcomings? ”

Li dared to ask Liu Zhang, after all, he was a technical consultant, and the hot air balloon was created by him.

"I can't see it yet, the hot air balloon is landing normally in deep space. Don't fly too high in future training, it's better to train on sand. ”

If it weren't for Liu Che's insistence on making a hot air balloon, Liu Zhang really didn't want to help them make it.

In case of a malfunction, the hot air balloon does not even have a parachute, and it falls from a high altitude without life.

After that, the flight altitude was controlled within 100 zhang, and they operated the hot air balloon according to Liu Zhang's requirements.

As much as possible to improve the safety factor, Liu Zhang did not want to have an accident in the next training.

At this moment, several craftsmen came over pushing a cart with wooden boxes on it.

Rows of arrows were placed in wooden boxes, each with bamboo poles as thick as fingers tied to each arrow.

This is a dense quiver designed by Liu Zhang, and he asked craftsmen to make dense quiver boxes of different sizes.

The next step was to experiment with dense quiver boxes with bamboo knots containing gunpowder.

When ignited, the gunpowder burns and emits hot gas, increasing the speed and range of the arrows.

Liu Zhang designed this to deal with cavalry, and this kind of thing can be placed on a chariot.

Chariots were available during the Shang and Zhou dynasties, and today, cavalry has grown and grown.

Chariots were no longer suitable for fighting in the north, and since the Western Han Dynasty, chariots have lost their combat use.

It has been almost a year since Liu Zhang crossed over, and he has never seen the Han army use chariots to fight.

During this time, I also asked Li Gan, and you dared to tell him that the effect of the chariot against the cavalry was not ideal.

The cavalry was more mobile and nimble, and the chariots were only suitable for driving on the plains.

The chariot could not outrun the cavalry, so the chariot was eliminated.

Liu Zhang improved the chariot so that it could not only drive on the plains.

It is also easy to pass in some mountainous terrain, and improved vehicles are used to assist in combat.

"It looks like a chariot, and it's useless to use it against cavalry. A chest on a chariot with rows of arrows in the chest. ”

Li Kang didn't know what Liu Zhang was doing with such a strange chariot? He believed that it was not very effective against the Xiongnu.

"This chariot is an auxiliary operation, if a large number of cavalry rushes over. Use this to deal with, first consume part of the enemy's cavalry, and then the Han cavalry rushes over to kill the enemy. ”

Liu Zhang asked people to prepare dummies and fake horses, which were arranged according to the formation of cavalry.

The next step is to test the power of the Dense Arrow Box and see what needs to be improved.

If you want to do it, you can do it best, and the dense arrow box is changed according to the idea of a swarm of bees.

The gunpowder in the bamboo poles tied to the shaft of the arrow has no explosive effect and is relatively safe to use.

Liu Zhang took the fire fold and lit the hidden letter at the other end of the dense ship.

The secret belief was sparkling, and the dense arrow box was forty zhang away from the family and the horse.

Each arrow is much longer than the one used in a bow and crossbow, and was carefully designed by Liu Zhang.

The shaft and arrow are more stable in flight, and the next step is to test their range and lethality.

After a while, flames erupted from the bamboo pole, and the arrows flew out quickly.

In just a few seconds, the dummy and the fake horse were shot, after all, they were fixed targets.

The craftsman pushed a few more carts, which were Liu Zhang's improved bed crossbows.

The bed crossbow has a longer range and is more accurate than the Dense Arrow Box.

This is not his invention, the bed crossbow already existed during the Warring States period.

He only improved on the original and increased the lethality and range of the crossbow arrow.

It allows users to save more effort and save time for continuous launch.

Li Dang was already shocked when he saw the dense arrows emitted from the dense arrow box.

Liu Zhang showed him the bed crossbow again, and he personally demonstrated it to everyone.

Pulleys were installed on the bed crossbow, making it easier to pull the crossbow string.

Although the cavalry was mobile and agile and charged quickly, bed crossbows were equipped for infantry.

As long as the first charge of the cavalry was blocked, the advantage of the cavalry would be greatly weakened.

Liu Zhang also prepared a horse shield and fixed the horse shield around the infantry side.

Spikes can be installed in front of the horse shield, if you don't think about keeping the warhorse.

As long as the horse hits the spike, it will be injured and lose part of its combat effectiveness.

The shield is also a secondary defensive weapon, and the craftsman pushes the shield over.

Four wheels are installed at the bottom of the shield to facilitate pushing, and the infantry is stationed down.

Installing a shield around the perimeter will prevent the cavalry from rushing into the formation.

Liu Zhang didn't know if such a thing was really practical, and he would have the opportunity to test it in the future.

This time the main test bed crossbow and dense arrow box, there were many means to deal with the cavalry.

If these weapons have shortcomings, without affecting their use.

These weapons can be improved to minimize the shortcomings.

The bed crossbow has five arrow slots and can fire one to five arrows.

If you shoot the Huns, you can definitely give the other party a heart-chill.

The bed crossbow was aimed at a dummy stuffed with straw, due to limited conditions.

Unable to make a very realistic dummy, Liu Zhang also considered the tenacity of human bones and muscles.

It can only be filled with straw and is dressed in armor on the outside, simulating an armor-piercing enemy

The bolt shot out and hit the dummy's heart.

Crossbow bolts are very penetrating, and if you hit an enemy, this penetration effect may not be as good as it is now.

Take into account that the opponent may be wearing leather or iron armor, as well as the distance between the opponent and the crossbow arrows.

The armor negates some of the damage from the crossbow arrows, due to the abundance of straw.

It can also slow down the penetration of the crossbow arrow, but it still pierces the dummy's body with the crossbow arrow.

This is equivalent to shooting the enemy from more than a thousand meters away, and the cavalry charge is very fast.

Next, there is also a range test of the bed crossbow and the cheats sword incense.

Get the farthest range data and make improvements later.

Li Dang they were shocked by Liu Zhang's improved weapon.

The power is much higher than the previous weapons, and it can also reduce the number of casualties of the Han army.

It's like you can reach the enemy, but the enemy can't reach you.

Others will definitely be angry, and it will be uncomfortable to be beaten passively everywhere.

Li Dang was overjoyed, Liu Zhang was really a genius, and he could always come up with so many wonderful ideas.

Just wait for these improved weapons to be used in real combat and test the actual combat effect.

"Although the weapons are good, teamwork and individual qualities are also important. Don't panic when you encounter a strong enemy, only by making the enemy feel fearful can you achieve victory. ”

Once the enemy is afraid, they have no intention of fighting, and can only be chased and beaten by one of them.

The enemy was even more passive, even though the language was not spoken by the enemy.

Everyone will be scared sometimes, so it is necessary for the Han army to train psychological quality.

Li Dare felt that Liu Zhang's words had some truth, only excellent psychological quality.

Don't panic in the face of any situation, they will only move forward.

"Life and death are downbeat, and if you don't accept it, you will do it."

Liu Zhang said a very classic sentence, and Li Dare pondered in his heart after listening to it.

This is a bit of contempt for the enemy, and there is a feeling that I am invincible.

After going back, tell Li Guang about it and ask his father to report it to Liu Che.

Send more people to protect talents like Liu Zhang, if he is assassinated by the fine work sent by the Xiongnu.

That would be a big loss to the Han Dynasty, and talents like him must be reused.

He liked what Liu Zhang said very much, as if he was standing on a high place and despising all beings.