Academy.

The autumn breeze is blowing, and autumn turns the whole yard golden.

The new task was received, and the people of the Academy of Sciences also carried it out conscientiously.

The five small ones are playing with earpieces made of paper cups.

It's hard to say about the character of the crown princess.

But......

Li Chong finally made up his mind to make a hot air balloon.

In fact, hot air balloons are really not as powerful as imagined.

can't control the direction, not to mention, and once something happens, it's easy to lose your life.

Merely......

It's boring anyway, so I'll make one and try it.

The material is the simplest cloth and paper.

Then there is a brazier that makes use of the principle of the sachet and a specially woven basket.

Of course!

For example, the kind of manual work of sewing does not need to be done by people from the Academy of Sciences.

Li Zhong applied to Li Er some craftsmen from the Ministry of Works to help complete this matter.

As the saying goes, there is great power in numbers.

From the concept to the completion, it can be compared to less than a month, twenty-seven or eight days, and even, this is considered slow.

After it is done, of course, it is necessary to conduct a test flight.

The site of the experiment was chosen on the broad plain north of Chang'an City.

It's a pity that Li Chunfeng is not there, so he went to do surveying.

Otherwise......

Such a fun thing, no matter what Li Chong says, he has to share it with him.

Now......

It's okay to have a dry child.

"Teacher, can this thing really fly?"

When the craftsmen of the Academy of Sciences were heating up the balloon, Li Chengqian was somewhat skeptical that this thing could fly.

Because this thing looks a little too big, too bulky.

Also, I feel that inflating the airbag is a bit laborious.

Li Chong said, "If this thing can't fly, then you can't see what the crown princess looks like. When the time comes, we will release this balloon next to the Crown Princess's house, and then you will be able to see the situation in the Crown Princess's house with a telescope when you stand on it. They've never seen anything like this, and they'll definitely come out and see it. But to be honest, this thing is a bit dangerous, I'm afraid you'll fall and hurt your legs and feet when you go up."

Li Chengqian: "Forehead ......"

All right!

Li Chengqian understood.

It turns out that this thing is used like this.

But why legs, legs, feet, feet?

And not hand and foot?

Of course!

Li Chengqian didn't care much in the end.

He continued, "Actually...... I've figured it out this month too. If this is not good-looking, the father and the queen mother will not choose each other. And even if you know, can you really change it? Since it was chosen for me by my father and mother, it must be the best, after all, they don't need to choose a bad one."

Li Chong also sighed, and looked directly at the craftsman in front of him who was still refueling, "Qian'er is getting more and more mature, it's best if you think so." I am very comforted by your teacher."

Li Chengqian: "So I don't have to go on that thing?"

Li Chong: "Hahahaha......"

At this time, a craftsman came over and said to Li Chong, "Dean, can I go up and test it myself later?"

This craftsman Li Zhong knew that he wanted to make gliders in the first place.

Li looked at the other party, "This is too risky, you are something I cultivated with great difficulty, in case of any accident, not to mention that I will lose a general." Besides, I have no way to explain it to your wife and children. Let's get on the animals first!"

I saw a look of disappointment with the convenience of the hand.

It's useless to be disappointed, and Li Chong won't let him go on disappointed.

After almost half an hour of pumping, the hot air balloon really inflated.

After that, it's time to catch the sheep.

All I can say is......

This time the test flight was very successful.

The balloon should have risen one or two hundred meters, but because the fuel was exhausted, the sheep would not refuel themselves, so it fell again.

The craftsman applied to go up on his own.

All right!

If it weren't for the fact that he was flying so smoothly, Li Chong would never have agreed.

Let the other person try it.

Li Chong also taught him some of Jackie Chan's rolling skills very uneasily.

It just feels ......

It doesn't hurt to learn one more thing.

Other than that......

I also asked someone to bring several quilts, and if they really fell down quickly, maybe they could be used as buffers.

At the end of the day.

It really proves that hot air balloons can fly.

Merely......

This flight lasted too short.

Due to factors such as fuel replenishment, it may last less than two quarters of an hour at most.

Of course!

Even so, this time the experiment felt pretty good.

After the end, Li Zhong instructed the people of the Academy of Sciences to continue testing the relevant data.

And find out the relationship between the size of the balloon and the load.

It's definitely related, don't even think about it.

So it's a pity that Li Chunfeng is not here, otherwise, this thing should be handed over to him to do.

The craftsman is calculating this piece, and it is obvious that he is still lacking.

Li Chengqian was also very puzzled: "Teacher, I don't even want to see the crown princess, why do you continue to do experiments?"

Li Chong sighed, and then said, "I have other uses for this thing."

Li Chengqian: "What else can this do?"

To be honest, Li Chengqian looked at it and felt quite stunned.

Even the five little ones thought this thing was boring, and they didn't want to go up and try it, so they could see it.

Of course, the main thing should be to be afraid.

After all......

Who doesn't want to fly into the sky and see the scenery of Chang'an City.

Even if it can be a great sin.

Li Chong said, "I can't use it now, but maybe I can use it later." But don't think that if you succeed this time, there will be no danger in the future. All I can say is...... This thing is still very dangerous. We must be prepared to die for every flight."

Soon.

Someone in the court also reported this incident.

Said something flew up.

In the sky, it's huge.

It's like an upside-down scoop of water.

Li Er hadn't thought of Li Chong at first.

Until the small meeting, Li Chong admitted to himself that he did it!

Only then did everyone know what was going on.

And......

I was also shocked by his bold idea.

Is it a man's job to send a man to heaven?

Li Er had a lot of curiosity about this.

Therefore, Li Chong is strongly urged to do it again.

No way.

This Tang monarch is so boring.

But this is actually good, like Yang Guang, when he felt bored, he sent a large army to fight people in Linyi.

Subsequently......

Li Chong organized a second test flight.

Before the test flight, Li Chong checked it three times inside and out, and then he was relieved.

When the hot air balloon finally took off.

The Tang Dynasty monarchs and ministers have also gained a lot of knowledge, and they are very strange about this thing.

Of course!

The eldest grandson Wuji came out to stir up the situation, saying that this thing flew above His Majesty's head, and it was not good.

Li Chong actually thought about this problem.

But......

He just wanted to see how they would react.