"Take off!"

With the emperor's order, the people on the hot air balloon opened the ropes on the iron chains that held the hot air balloons, and as the ropes were thrown down one by one, the hot air balloons began to shake.

When the last rope was dropped, the balloon began to float high into the air, not fast, but it began to fly upwards little by little.

"It's really flying!"

The emperor said to himself, since the prince said that he had followed the immortals in the fairy world, he had been looking forward to the fairy world, and wanted to go up to have a look, and now the emperor even wanted to replace the people in the bamboo basket and go up himself, but he knew that it was impossible, so he could only watch the hot air balloon continue to fly towards the sky.

"The Zhuge lamp has been invented for nearly a thousand years, why has no one thought of making a big Zhuge lamp to bring people flying, the first person in the world to fly, what a great glory......"

The emperor said to himself, looking at the prince beside him, as if this year, His Royal Highness the prince has changed very much, and the changes in the entire Yutang Empire are also because of the prince, the emperor must not dare to imagine easily, people can fly into the air like immortals.

"Father, it's just a matter of knowledge, the son is in the fairy world, he has seen these things, broadened his horizons, and provided students with ideas, which is why he has these inventions!"

Yu Zhiqian said slowly, the ancients were not stupider than modern people, and even said that many times the ancients were smarter than modern people, and they used the later modern times, which have not made a breakthrough in physics for nearly a hundred years, and they are all using the wisdom of Einstein's generation.

Although Yu Zhiqian doesn't know this and doesn't understand that, Yu Zhiqian pushed open a window, so that the students of this era can see a new world, and once the inspiration is opened, all kinds of inventions will spring up like mushrooms after a rain.

"Well, these students of yours are good!"

The emperor spoke softly again, Yu Zhiqian looked at his father with blank eyes, waiting for his father's next sentence, the research funds he applied for before were approved, 300,000 taels is not a lot, maybe with this money, the emperor can also realize his dream of flying.

But the Emperor pretended not to see and continued to stare at the balloon flying higher and higher.

On the hot air balloon, Zhang San and Li Si looked at the smaller and smaller people below, and looked at each other: "Are we soaring?" ”

These two people are the miscellaneous servants of the academy, this kind of more dangerous flying mission, it is definitely not possible for students to come in person, but to find these miscellaneous servants, of course, they will be rewarded regardless of whether they succeed or not, such as this time the flying plan, Zhang San and Li Si two people, one person can get a reward of fifty taels.

"I don't know, what do you see those people doing over there?" After finishing speaking, he pointed to a corner in Chang'an City.

Before the explosion of gunpowder, although the sound was heard in Chang'an City, it did not affect the lives of the people, for the people, this kind of flat thunder will appear once or twice from time to time in the summer, so the people do not feel much, and when the glider experiment, because of the distance, the target is small, the people did not see.

And this hot air balloon is different, the hot air balloon flew into the sky for the first time, and the people of the entire Chang'an City can see the hot air balloon flying in the high altitude.

"There are gods in the sky!"

This is the first reaction of ordinary people, and some people kneel directly on the ground and start kowtowing, passing ten, ten and hundred, and soon almost the entire people in Chang'an City ran from running to the street to look up at the hot air balloon in the sky.

"Your Majesty, you should give an order to quickly pacify the people, so as not to cause unnecessary panic!"

Di Renjie looked at the hot air balloon in the sky, the first to reflect, he saw the hot air balloon rise with his own eyes, he felt very shocked, not to mention ordinary people, Di Renjie can imagine what kind of performance ordinary people will be after seeing the hot air balloon.

"It's still Di Xiang's thoughtfulness, come here, pass on the decree, so that the people don't have to panic, this is a newly invented object!"

"Whoa!"

Soon, an attendant ran out of Tsinghua Garden and began to deliver the message.

In Chang'an City, the hot air balloon began to enter the sky above the East City, and now it can only roughly see the shape, and many people are walking with this hot air balloon, wanting to see what is flying in the sky.

"Immortals, immortals, take me away!"

"The gods have appeared ......"

Dongshi became chaotic, but soon a team of cavalry appeared and shouted: "Don't panic, this is not a god, this is my newly invented flying artifact, called a hot air balloon, is in flight experiments, everyone disperse!" ”

The cavalry shouted as they continued to pass on the news, and when they heard the news, many of the people got up from the ground, patted the dirt on their bodies, looked at each other, and then smiled awkwardly.

"This is my newly invented flying artifact?"

"It seems that the sergeant just said that, I can already fly into the sky?"

"What's the fuss, we are the kingdom of the Heavenly Empire, what's the big deal about flying in the sky, I already knew that some of us can fly to the sky, do you know Huashan Old Immortal? I heard that the old immortal can fly directly to the sky without these external forces! ”

"Really, fake, I can't lie to you!"

A sergeant specially explained the hot air balloon in the sky, Chang'an City returned to calm, but the people were still discussing the flying hot air balloon, and in the words, you could hear the pride, especially in the West Market, the people who originally looked down on the Hu people were even more despised now, and they almost pointed their noses at the Hu people not far away.

I heard that you Hu people are very good at fighting? I'm sorry, you can't beat us, we can still fly now! And Hu Ren also saw the hot air balloon in the sky, and his attitude became more respectful, for fear of angering the Han people beside him.

After the hot air balloon flew around, it finally flew towards Tsinghua Garden, and began to slowly reduce the altitude, this time it still flew over the people of Chang'an City, but this time the people did not kneel down, but pointed at the hot air balloon, discussing how the hot air balloon flew, and even some people with better eyes could see the people sitting on the hot air balloon.

In the end, the hot air balloon fell back to Tsinghua Park without danger, but it fell in Weiyang Lake, there was no way, the current technology has not yet reached the point where it can land accurately, so it finally fell in the lake, and soon rushed over with the guards with good water to salvage Zhang San and Li Si from the lake.

The rest of the students of Tsinghua Garden, rowing a small boat, began to pack the hot air balloon, they have a wealth of experience in recycling, often all kinds of things fall into the lake, they can find things accurately.

"The grass people have seen Your Majesty!"

After the two people were fished up, they were brought to the emperor, who looked at the two of them with a smile: "What is in the sky?" ”

"Heavenly?"

The two of them thought for a moment: "Back to Your Highness, there is nothing, not much different from what you see on the ground!" ”

After the emperor heard this, he frowned and looked at Yu Zhiqian, Yu Zhiqian smiled: "Father, there is indeed nothing in this sky, the clouds we see are a bit like water vapor, that is, the fog that appears after we boil water, the clouds in the sky are roughly like this, and the same is true even higher!" ”

"Then prince, where did the immortal you see take you?"

The emperor was a little disappointed, thinking that after he could fly to the sky, he could go to the fairy world to have a look, but the result made him very disappointed.

"Father, this explanation is more troublesome, how to describe it, that is, the fairy world is not in the same space as us, or a dimension, only the immortals can take us through!"

"Where is that fairy?"

The ears of the people around were pricked up, not only the emperor cared about the immortals, but now everyone cared about the immortals, and they all listened sideways, wanting to get some news about the immortals from Yu Zhiqian's mouth.

"The Father Emperor Immortal is not on the planet where we live, if we want to find the Immortal, we still have a long way to go, at least fly out of the earth!"

The emperor had also heard Yu Zhiqian say that the so-called earth is a ball, and when he heard Yu Zhiqian's words, he shook his head in disappointment, and looked at Zhang San and Li Si: "Reward 100 gold!" ”

After finishing speaking, he saw that part of the hot air balloon had been salvaged, walked over quickly, and looked at the hot air balloon: "When can I take this hot air balloon to the sky?" ”

Lu Su saw the emperor and thought for a while: "Your Majesty, there is a certain danger in the flight of this hot air balloon, Your Majesty ......"

The emperor frowned again, looked at Yu Zhiqian, Yu Zhiqian smiled: "Father, this hot air balloon is not safe, after the inert gas is researched in the future, it can let you fly, you don't have to worry!" ”

"Hmm!"

After the emperor finished speaking, he waved his hand: "This Qinghua Garden is doing well, go to the Whampoa Military Academy to have a look!" After finishing speaking, he took the lead and walked out, Yu Zhiqian immediately followed behind, constantly thinking in his mind, how to make his father remember that the matter of asking for money could not be delayed.

"Father, what do you think of today's research results?"

"Eye-opening! Especially gunpowder and hot air balloons! ”

The emperor pondered as he walked, and then slowly spoke, "How much weight can the hot air balloon bear?" ”

"For the time being, you can take up five adults, and the exact number has not been experimented yet, but depending on the size of the sphere, you can carry different weights!"

"If the hot air balloon and gunpowder go together!" The emperor's words made the eyes of the surrounding generals light up, yes, why didn't you think of it, but such a glider seemed to have no effect.

"What my father said is that it was the son's negligence!"

Yu Zhiqian really didn't expect this, mainly because he didn't expect the Yu Tang Empire to have an air force so soon, but now the establishment of the air force is a little early, and the hot air balloon is still a little unstable.

"Well, hurry up and make hot air balloons and powder canisters, I'll be of great use!"

As soon as the emperor's words were finished, Cheng Biting Jin immediately became excited, the emperor said that it should be of great use, it must be ready to conquer Goguryeo, fighting Goguryeo is not a small country, it is impossible to only dispatch those young generals, the older generation must also be dispatched, Cheng Biting Jin's bones in Chang'an City are a little sour, and he can finally go to fight!

"Father, this, this ......"

Yu Zhiqian looked at his father with a twist, he wanted to make a hot air balloon or something, but he had to give money, the emperor never mentioned money so far, Yu Zhiqian was a little anxious, after all, he couldn't do anything without money.

"What? Difficult? ”

Yu Zhiqian immediately nodded like a chicken pecking rice: "Yes, father, father doesn't know, this hot air balloon and gunpowder canister production all require money investment, but Tsinghua Garden has no money, the last time the son asked you for money, you said to wait until you read it, you look at this money......"

The emperor looked at Yu Zhiqian with a sudden realization this time, and patted his head: "This is my negligence, I forgot about this matter, Fan Jian!" ’

"The minister is here!"

"The household department allocated 200,000 taels of silver to the prince!"

Fan Jian nodded and wrote down the matter, but Yu Zhiqian shook his head: "Father, it's three thousand taels!" ”

The emperor glanced at Yu Zhiqian dissatisfied, Yu Zhiqian could only retract his head, 200,000 taels is 200,000 taels, with this money, it can be regarded as a relief of the urgent need, after all, you can't use your own money to subsidize, but soon Yu Zhiqian's eyes rolled and looked at Cheng Yanjin.

"Cheng Shangshu!"

Cheng Yanjin is a national prince, and he is also one of the Shangshu of the Ministry of War, the Ministry of War is different from the rest of the departments, there are many Shangshu, and Cheng Yanjin is one of them.

"His Royal Highness the Crown Prince!"

Cheng Yanjin is in a good mood today, with a smile on his face all the way, although this guy is even more ugly when he laughs than if he doesn't laugh, but at least he doesn't have to worry about this guy's big slap falling, Yu Zhiqian's small body can't bear this guy.

"Cheng Shangshu, Your Majesty said that the Ministry of War should purchase some gunpowder canisters and hot air balloons, these things cost a lot of money, and you still need to discuss them with Cheng Shangshu!"

After the emperor heard this, he turned his head to look at Yu Zhiqian: "This military department needs hot air balloons and gunpowder canisters, and still needs money?" Didn't I give you 200,000 taels just now?"

"Father, the money you allocated just now is a research fund, which means that the cost of researching these hot air balloons and gunpowder canisters, and the subsequent improvement of hot air balloons and gunpowder will need this money, and the rest of the research in the academy also needs to use this money, but the procurement cost of the military department needs to be calculated separately, and it should not be confused!"

Yu Zhiqian began to explain the so-called procurement to the emperor again, although the imperial court would often purchase some things, but it was the first time to purchase things from the place where he had allocated funds.

The emperor didn't understand what he heard, and he still didn't understand why the military department wanted to pay this money, but finally accepted Yu Zhiqian's proposal.

Yu Zhiqian's eyes began to roll again, what price should hot air balloons and gunpowder canisters be sold for, after all, they are sold cheaply, and they do not conform to the identity of these things.

ps: Don't go out randomly, I'll try to write as much as I can!