Yan Fa immediately raised the question that had been in his mind, "Sir, this hydrogen is lighter than air and can make the airship rise, but how can it make him fall?"

"Oh, I know this. You just need to let go of a few air bags. It's just like I'm turning off the fire on a hot air balloon." Gan Shi immediately answered, and after saying that, he looked at Yan Fa, with an expression of how stupid you have been studying for so long.

Ma Qiang nodded and said, "What Master Gan said is indeed a way, but there is another way, called "air room".

First of all, you should all know what atmospheric pressure is. As the height increases, the atmospheric pressure gradually decreases, and then the hydrogen in the capsule will expand. If all the airbags are filled with hydrogen, then when they enter the air, they will inevitably expand to crack.

Therefore, the airbag cannot be too full, and a certain elastic space needs to be left. Secondly, some airbags need to be left. It is best to design it as an inner and outer capsule, with the inner airbag and the outer hydrogenbag. Then the gas ratio of these two airbags can be adjusted to rise or fall.

In fact, it is not only in the sky, but also in the bottom of the water.”

Another application of air room technology is submarines, but this is even less practical for Ma Qiang.

Who did he use a submarine to fight? Ao Guang or Poseidon?

The night passed quickly. At dawn, the battle report from Mount Fushan was that three of the eight military fort groups had been captured. Yuan Shao seemed to have insufficient gunpowder and did not bomb like this, but instead siege it.

call...

As long as there is insufficient gunpowder.

——The foot of the mountain

Yuan Shao looked at the list in his hand and felt a slight pain in his heart.

In one night, I actually used almost 4,000 kilograms of gunpowder.

I heard the explosions before and it was quite pleasant, but now I know that there is no explosion, it is all the gurgling sounds of money throwing water.

This is all money!

Why don’t you know how to save some money when you say these people!

"Ming Gong, although this gunpowder is good, it consumes too much. If there are only a few military forts left, it's better to use the dig-out army." Xu You stepped forward and persuaded him, and gave Yuan Shao a step.

Yuan Shao coughed lightly and hummed, "Tell me that the heads of those bandits are divided into two groups, listed in front of the Wushan Military Village and outside Yecheng, so that these bandits will know the outcome of resisting the heavenly soldiers!"

"promise!"

Using heads to intimidate the enemy was a common practice in ancient military? No one thought there was anything wrong.

"Yang Feng!"

"exist!"

"You lead 5,000 elite cavalry to go around to inquire about the enemy situation and check the farmland situation. I watched the wheat mature on the way for these two days? It's a cheaper one."

"promise!"

"Other soldiers and generals? Set up camp and repair them and attack Mount Fushan tomorrow!"

"promise!"

"That... Ziyuan? Come with me."

Xu You responded with a smile? Regardless of Ju Su, who was cold-faced, followed Yuan Shao to the back.

Ju Su looked at Xu You's face and couldn't help but miss his good friend Tian Feng.

I don't know what happened to him.

After the account, Yuan Shao said to Xu You, "If it weren't for actual combat? I don't know that this gunpowder is so useless, Ziyuan, you have to go there? To return to Taiyuan to supervise the construction of gunpowder, you have to prepare at least 200,000 kilograms? Otherwise, I would be inconvenient to this battle..."

Two hundred thousand kilograms? Actually not much? It’s only about fifty tons.

In the future? An overload truck will live together!

But in the late Han Dynasty, a certain amount of productivity was still needed.

Xu You also knew that this matter was of great importance and responded that although he could not make contributions on the front line, if this matter was done well, it would not be less than a contribution on the front line.

"By the way, there are food and grass. I asked my son Yuan Xi to guard the She County. He is young and ignorant. You can check it out more when you go to She County and don't make any mistakes."

Yuan Shao had four sons, the eldest son Yuan Tan, the second son Yuan Xi, the third son Yuan Shang, and the youngest son Yuan Mai.

Perhaps because he did not receive care from his family when he was young, Yuan Shao attached great importance to his family. He was very dedicated to his sons and was well trained.

Don’t think that it was wrong for Yuan Shao to reuse his sons. This matter needs to be viewed from the perspective of the time. Didn’t Cao Cao also use a lot of Cao and Xiahou generals? Everyone is nepotism, because in that chaotic era, only these relatives were the most reliable people.

If you want to tell what Yuan Shao was wrong, it was probably because he lost the battle of Guandu.

Otherwise, the comments from later generations of people about him will inevitably be a different situation.

After hearing Yuan Shao's words, Xu You knew that Yuan Shao was worried about food and grass, and smiled and comforted him, "Our army's food and grass are stored in She County, and the surrounding mountains are full of steep mountains and ridges, which is difficult for the mountain people to cross, let alone the army.

No matter how strong his horse, Ziyu's army is, can he still fly?"

Yuan Shao pulled the corner of his mouth.

Isn’t it possible to fly? Have you forgotten about Gongsun Zan?

However, he also understood that there could only be two or three people sitting on the ball. If the two or three people burned Shexian, then he would kill his relatives and cut off the unscrupulous dick!

On this side, Yuan Shao asked Xu You to go back and ask for gunpowder, while on the other side, Ma Qiang began to review the new firearms.

But after checking it, Ma Qiang found that compared with half a year ago, there has been no major progress in both muskets and cannons.

"Brother Ma, I see if the black gunpowder path has come to an end?" Yue Yang asked tentatively at Ma Qiang who was frowning.

"The potential of black gunpowder is indeed not great...Okay, wait, I will ask a few gunpowder engineers to study and upgrade with me."

"Brother Ma, or which glycerin should you use?"

"No, that thing is too unstable. How can you let the soldiers fight with peace of mind?"

Even nitroglycerin with various debris added can be in danger of oozing out when it is damp or under pressure, which eventually leads to an explosion. These weapons of the army are stored in the warehouse most of the time. Ma Qiang doesn't want to worry about which arsenal explodes again every day in the future.

While thinking about improving gunpowder, Ma Qiang took the independent army to the road of being bait.

Just as Yuan and Ma were fighting together on the Taihang Mountains, Henan, with Yanzhou as its core, officially began a major autumn melee.

First, Cao Cao issued a document to question Tao Qian three major crimes, one was to not raise an army to fight against Dong, the other was to claim his own official position, and the third was to attack and kill his colleagues, and then raised an army to attack Xu.

Well, although Cao Song has retired, he is still a colleague.

As soon as Cao Cao sent troops, Tao Qian, who had been guarding against Cao Cao, immediately got the news. Then the old Xuzhou Mu immediately captured Lu Zhi's life-saving straw and presented his sword. Lu Zhi was fully responsible for the arrangement of this battle.

Lu Zhi also knew that the situation was urgent, so he ordered Liu Bei and his three brothers to immediately raise an army from Xiaopei, and took Cao Bao, Zang Ba and other Xuzhou troops to Langya to fight.
Chapter completed!