PS: There are some things today, only three chapters, the old rules, I will make up for it tomorrow.

"Hydrogen balloon?"

Xiao Ming, who was planning to build agriculture and animal husbandry, almost sprayed out the tea in his mouth.

Seeing this, Aster smiled with her lips and said, "Your Highness, what is this hydrogen balloon? It makes you so excited."

"Hehe, this hydrogen balloon is a good thing, much more practical than a hot air balloon." Xiao Ming said.

Thinking that he was about to rush to Chang'an, Xiao Ming was worried about the hot air balloon.

The hot air balloon in this war can be said to be shining brightly, which made Luo Quan jealous. Before returning to Chang'an, Luo Quan asked him to give one, but he did not agree at that time.

However, he understood that he could not hide it all the time. This time he went to Chang'an, he would definitely bring a hot air balloon and a musket.

This musket, Xiao Ming, naturally, would not send the flintlock gun. Strictly controlling the difference in weapons and selling arms is his current basic principle.

Therefore, he was going to bring the mesh gun. With Xiao Wenxuan's personality, he now had a firearm battalion, and he could not establish another musket battalion to shock the little girl.

But the problem is that it is fine to fool the musket with the fuse, but the hot air balloon has become the object of worry. He just didn't expect that at this critical moment, Lin Wentao actually brought out the hydrogen balloon.

Compared with hot air balloons, the hydrogen balloon flies higher, which is naturally one generation difference than the hot air balloon.

Once the hydrogen balloon appears, the hot balloon will be eliminated. Since that is the case, it is better to give it to Xiao Wenxuan to sell it to increase his position in Xiao Wenxuan's heart.

After all, Xiao Wenxuan will definitely ask for these things from him at that time. Instead of asking him to ask for it, it is better to give it to him on his own initiative.

Anyway, these backward things are not very useful in his hands, so why not sell them to the imperial guards for money?

Moreover, the more arms he sold to the imperial guards, the tighter the tighter the spell he put on Xiao Wenxuan. Once the court officials attacked him, Xiao Wenxuan had to measure the arms problems of the imperial guards before he could deal with them as appropriate.

Without his cooperation, the imperial guards' artillery and muskets would have no ammunition supply and turned into a pile of scrap copper and iron.

Therefore, as long as he does not rebel, he can walk sideways in Chang'an. Because of this, he cannot hide the matter of muskets and hot air balloons. Using this as an excuse, many bad-minded people will use this as a fuss.

Now I took the initiative to send it, which was enough to block the mouth of Youyou.

No longer thinking about these messy things, after learning that Lin Wentao had made hot air balloons, Xiao Ming suddenly became energetic and asked Aster Preparation to come to Bowen Academy.

This battle to expel the barbarians played a very important role in the Bowen Academy, one was a hot air balloon and the other was Lu Tong's lime bomb.

Niu Ben praised lime bombs when he was in Shanhaiguan. Once this shell exploded, it would instantly cause a large number of enemies to lose their combat effectiveness. This is much more powerful than a simple gunpowder tank.

After this war, it has been further proved that technology is the magic weapon to win the war.

When they arrived at Bowen Academy, Xiao Ming saw a brand new hot air balloon parked in the small square in front of Boxue Academy. Lin Wentao and others were discussing something in the square.

Liang Yubin and He Cheng have returned to the academy, and now they are with Lin Wentao.

Seeing Xiao Ming coming, a group of students gathered around him. Lin Wentao said, "Your Highness, this is a hydrogen balloon."

Xiao Ming raised his head, and a balloon as big as a hot air balloon hovered in the air, with four ropes tied to the four directions of the balloon.

"How do you make hydrogen?" Xiao Ming attaches great importance to this issue.

In fact, the difference between a hot air balloon and a hydrogen balloon is whether the gas in the balloon is ordinary air or hydrogen.

If it is a hydrogen balloon, even if it is not heated, it will have a certain lift, which is destined to be more efficient and safer than hot air balloons.

When Lin Wentao mentioned this, he immediately became flirtatious. He said to Xiao Ming: "I have to thank the students of the School of Chemistry. They made hydrogen, otherwise this hydrogen balloon would not really appear."

Then Lin Wenyao pointed to the pottery jar behind him that was like a gourd and said, "Your Highness, the hydrogen comes out from here and fills the airbag."

Xiao Ming has noticed this thing.

After only looking at the materials around this thing, he knew how the hydrogen was produced.

"Prodigal son, how much sulfuric acid and scrap iron does this require?" Xiao Ming shook his head helplessly, but since he let it go, he was not inconvenient to blame him too much, so he only complained and asked the students standing on one side.

This student came from the School of Chemistry. As he guessed, they did use the hydrogen obtained by reacting sulfuric acid and scrap iron, and then let the hydrogen pass through the instrument and fill it into the airbag.

Looking at the excited faces of the students, Xiao Ming didn't want to disappoint him. Although the method was a little primitive, the production of hydrogen was achieved step by step.

He said to Lin Wentao: "Yes, the hot air balloon has worked miraculously in this war. In order to commend you, I have prepared a title and rewarded you, but I have to wait for the Qingzhou Army generals to come back to reward you together."

"Thank you, Your Highness!"

Lin Wentao and other students were so happy that they smiled. They finally got rich rewards when they tried so hard to play the hot air balloon.

Xiao Ming smiled and it was time to award some titles to stimulate the students of Bowen Academy.

The current scientific and technological level in Qingzhou is not a little bit worse than that in Europe. This requires Bowen Academy to catch up until it exceeds the entire world.

After learning about the birth process of the first hydrogen balloon in Qingzhou, Xiao Ming asked Liang Yubin and He Cheng to manipulate the hydrogen balloon to take off. He wanted to see how the difference in height between the hot air balloon and the hydrogen balloon.

Liang Yubin and He Cheng were also excited. They were now a little fascinated by the driving of the heater, and now the hydrogen balloon makes them even more love.

The two climbed onto the hydrogen balloon, and the people below also loosened the rope, and the hydrogen balloon suddenly lost its restraint and flew higher and higher.

"Your Highness, we're leaving." Liang Yubin and He Cheng looked excited, and their figures became blurry in everyone's sight until they turned into a small black dot.

"This is too high." Lin Wentao himself didn't believe that hydrogen balloons could fly to such a high place.

Xiao Ming nodded with satisfaction, "The hot air balloon is only a few hundred meters high, but the hydrogen balloon can fly thousands of meters high."

However, Xiao Ming, who was looking away from each other, became a little worried.

The hydrogen balloon technology is not complete now, so he doesn't want something to happen to the two of them, but his worries are unnecessary. Not long after, the two lowered the height and soon returned to the Bowen Academy.

Seeing this, Xiao Ming felt relieved. Now he could bring the hot air balloon to Chang'an with peace of mind, hoping that he could sell it at a good price.
Chapter completed!