On April 18, the weather was clear.

Li Longji held a small court meeting in Hanyuan Palace, and many people didn't understand what it meant.

After the court meeting was over, Li Longji announced: "There is a new thing called a hot air balloon, I will bring one today, and the Yulin Flying Horse will demonstrate it to the people." ”

Everyone is in good spirits, and today they can actually see the rumored flying ball.

Everyone waited, and Yu Lin Fei led four horses here, and immediately carried the boxes.

Use this to tell the ministers that hot air balloons are easy to carry.

Then Yulin Feiqi opened the box and took things, quickly assembled, debugged, puffed up the hot air balloon, and two people went up to control the alcohol blowtorch.

The hot air balloon gradually rose under the gaze of the ministers, and when it reached thirty zhang, all the people inside and outside the palace saw it.

On the road in front of the imperial city, the people stopped to watch, and the distance was close, and they could see clearly.

Under the colorful balls hung a large basket, and in the basket were feathered flying horses.

The hot air balloon continued to rise, and the hearts of the envoys of various countries continued to sink.

I saw it, I saw it clearly, it can indeed carry people, and it is still Yulin Flying Horse, does the emperor of the Tang Dynasty want to express anything?

When the hot air balloon ran out of rope of 200 zhang, at the moment when the sky moved with the wind, the cheers of the people reached the Hanyuan Palace.

Officials gathered together and whispered to each other.

"Good things, take them out, even if you don't use them, the envoys of other states will pass them back when they see them, and scare them to death."

"It is the easiest to use when attacking the city, you can choose the wind direction, there is a wall that cannot be used to defend the city, and the other two sides will be deviated, and only the face can be poked out."

"The wind is strong, and the rope suddenly breaks, and the people on it are blown away, and they will fall to their deaths."

"There are no undead people in war, and falling to death is a normal casualty."

"How long can the rope be? The rope is also weighty when it grows. ”

"How can there be a weapon that can't find shortcomings, it's already good, and there are more hot air balloons, which are auxiliary to other troops."

"Exactly, wouldn't you defend the city without a hot air balloon? Even if it only relieves the pressure on one wall, the defenders of that wall can go to reinforce the others. ”

"You can still look, two hundred zhang high, and use binoculars to see the layout of the enemy army."

"Yes, one above, one to watch, one to play the flag."

"The soldiers at the border must be very happy to know about it."

"It's not expensive, is it?"

"If you are expensive, you must build it."

The ministers expressed their opinions.

"Your Majesty, is it time-consuming to make this thing? It's better to ......" Yao Chong was close to Li Longji, and he asked how long it took to manufacture.

Before he could finish speaking, Li Longji interrupted him: "No, the Li family Zhuangzi can be built, very soon." ”

"Faster than making a bow?" Yao Chong still wants to know.

"A bow takes a long time, a crossbow takes even longer, and a hot air balloon is actually not as expensive as a strong crossbow."

Li Longji finally got to the bottom of it.

The strong crossbow process is many and takes a long time, the hot air balloon is simple, the working hours are short, and it is naturally cheap.

"Huh?" Yao Chong was surprised, he thought that a hot air balloon would not be enough.

The result is cheaper than a strong crossbow, and the cost of a strong crossbow of fifty or sixty is normal.

"That'...... That ......" Yao Chong didn't know how to express it for a while.

"It's broken, the rope is broken, it's broken about ten zhang or so." A shout came suddenly.

Everyone looked down, and sure enough, the rope fell and the other ropes flew away with the hot air balloon.

The ministers are in a hurry, they are going to fall to death today and kill two Yulin flying riders?

Li Longji frowned.

"Your Majesty, just now there was a sudden gust of wind, and the rope broke." The little yellow door came and said the reason.

All the people who watched the hot air balloon were now stunned, and the foreign envoys were excited.

It turned out that there was a shortcoming, as soon as the rope broke, the person fell to his death.

The ministers of Hanyuan Hall looked at Li Longji, Li Longji thought about it, and ordered: "Serve tea and wait for the hot air balloon to fly back." ”

Ministers: "......"

The rope was broken and blown away by the wind, but can it come back? So what do you want rope for? Your Majesty is afraid that something went wrong after he was in a hurry, right?

At this time, the two people in the hot air balloon encouraged each other.

"Sixth, don't be afraid, we said, you can change, quickly, put the rope away, let's find a way to fly back, don't fall into the wild."

A sergeant shouted.

"I know Dalu, fast, rise, this wind is not in the right direction." The sixth man frantically pulled the rope, stretching and shrinking his arms, one by one (the distance between the two hands of the tuo arm).

Skillfully tie into bundles so as not to mess up and be unsolvable.

Dalu gave fire, and the hot air balloon rose rapidly.

When it reaches a certain height, the wind direction changes, but it does not blow back, and it continues to rise.

"It's a little cold." The sixth is still there.

"The higher the more, it's okay, the proprietor said, it will rise three hundred and thirty-three zhang, and the temperature will drop by six degrees, we can hold on." Dalu explained it in terms of science.

"I knew that I would come up in cotton clothes, no matter how high I was, would I be out of breath?"

"Then go down, you can't be suffocated, it's a big deal to fall into the wild."

"It's changed, it's fast, it's at this height, go back, oops, it's not easy, but it's really possible."

"It'll be easy to do in the future, bring clothes in the basket, and bring the oxygen bag of the proprietor."

After the operation, the hot air balloon ushered in a new wind direction at an altitude of more than 3,000 meters, blowing back.

Fortunately, it was summer, and the temperature dropped by 20 degrees, but it was still able to withstand it.

Two people discover a new world, oh my! You can look for the wind, who said that a hot air balloon can only fly in one direction?

What do I want this rope to do?

The two of them flew back, and Li Longji was waiting.

Whether it is flying back by yourself, or sending a message back after landing, there will always be a return.

Li Longji did not believe that the Yulin Flying Rider would fall to his death, the hot air balloon would not be fired, and the altitude would be reduced.

After waiting for about two quarters of an hour, suddenly a galliers who looked around with a telescope shouted: "See, in the sky, very small, floating over, near, near, to the top of our heads, hey?" Passed. ”

Li Longji stood up, took the telescope, and sure enough, saw a small balloon flying in the other direction.

Then the balloon was descending, it flew to the left, it fell to the left, it went up, not to the left, it was to the right, it flew some distance, it fell.

As the altitude decreased, others didn't need a telescope to find out.

The hot air balloon that looked smaller was rising and lowering for a while, and it was getting closer and closer.

After waiting for another quarter of an hour, the balloon was big enough to be able to see the hanging basket and the people inside.

The hot air balloon descends to a height and is blown back by the wind.

The people cheered, the messengers were depressed, and they could fly back and forth without a rope?

Li Longji smiled, sure enough, Yulin Feiqi was the calmest, not afraid of encountering emergencies.

The hot air balloon looks at the route, and it is floating towards the Hanyuan Palace.

The crowd waited excitedly, waiting for the ball to land.

The person I saw at this time was closer than the highest time just now.

Many people have sweaty palms, which is probably the reason for the hot weather.

Closer, closer, suddenly a gust of wind blew diagonally, and the hot air balloon ~~ floated away, floating away when it was six or seven feet above the ground.

The hot air balloon floated over the avenue in front of the imperial city, and a shout came from above: "Tell Your Majesty, we will be back in a while, oops, this wind." ”

The people watching below saw such a big thing flying overhead, and heard the shout, many people at the same time: "Oh~~"

The hot air balloon was quickly lifted and gone away again.

"Wait a little longer." Li Longji said helplessly.

Ministers: "......"