Qingyan and dozens of Xuanwu Camp soldiers spent a lot of effort to finally push the cart to the center of the shooting range. Although the students were curious, they still waited patiently.

"Everyone, I still need to prepare it. It's better not to come again after lunch." Qingyan untied the hemp rope on the car and said looking back.

"Who can still care about eating at this time? It doesn't matter if you have a few meals hungry. You don't have to worry about us, just do what you have to do." Su Ju sat on the grass first, took out a handful of melon seeds from somewhere and started to knead them.

Seeing that they all sat down and did not leave, Qingyan said nothing, and immediately ordered: "General Huang, you still need to work with your brothers later."

"The prince just told me that if I use some strength, Xuanwu will not be weaker than the Tiger Guard."

When the big black cloth covering the outside was unbuttoned, everyone saw many strange things on the cart and could not help but exchanged opinions in a low voice, while Su Ju looked at Qingyan busy with interest.

Time passed by bit by bit, and Zhao Ling'er and Shangguan Feiyan's palms were already sweating, but neither of the two women spoke, staring at the strange object that was gradually revealing their true faces.

After Qingyan finished splicing the last parts, he breathed a lot of relief. He turned around and asked, "Do you think this thing can fly into the sky?"

A rattan basket about ten feet wide appeared behind Qingyan, with a thick hemp rope thrown out at each corner and extending backwards. A large piece of crepe and silk cloth were covered with grass not far behind.

Although these ordinary things are confused when combined, they are still ordinary things after all, and they don’t look like they can fly, so everyone is full of big questions.

"Before the real experiment, I will explain to you a little bit. I call this thing behind me 'hot air balloon'. If the calculation does not have much deviation, I should stay in the sky for most of the incense sticks. If this is successful, I will tell Mr. Su the principle and he will improve it."

Of course, Qingyan would not naively say the principle of the inside and outside airbag air, not to mention whether they can understand it, even a well-educated man like Su Ju will definitely think he is a crazy person. Therefore, only by letting them truly see it with their own eyes can they break the inherent concept of more than a thousand years.

"Because I don't know if I can succeed this time, it would be fine if I didn't fly, but if something unexpected happened in the sky, it would be a great misfortune. So I will ride the hot air balloon alone this time."

When Su Ji heard this, she stopped sitting firmly on Diaoyutai. He stepped forward and said in a deep voice: "Qingyan, how high can this thing fly?"

"Students guess it's a hundred feet long." Qingyan tried to lower the height.

"Baizhang? If an accident occurs in the air, do you have a way to save yourself?" Su Ju thought about whether to continue this matter when she heard this high.

Safety issues Qingyan has long thought about it. The principle of a hot air balloon is to heat the internal air of the air bag, so that it has a lower density than the external cold air, and the key to the whole lies in the word heating.

In later generations, hot air balloons used propane or liquefied gas as fuel, and the gas cylinder was fixed in the hanging basket. Although it provided strong power, accidents often occurred on the fuel.

The volume of the hot air balloon Qingyan is obviously much smaller, and the raw material used is flint. Grind it into powder and put it in an iron basin fixed above the rattan basket. You can increase or decrease the amount of flint at any time depending on the situation, so the safety problem should not be big.

"Sir, I'll tell you the truth. In fact, I'm sure I will succeed in this matter. I'm afraid that Ling'er, a girl, will make trouble. At that time, there will be nothing wrong with the hot air balloon itself, and she will eventually capsize in the gutter after being tossed." Qing Yan murmured in a low voice.

"Is it so sure?"

"Students dare not deceive sir. I hope you can explain it to your classmates and say that I have my own way to escape."

Su Ju looked back half-believingly and said, "Qing Yan just told Su that he learned peerless martial arts from Wu Yue Jianchi for this matter, so even if something goes wrong, life will be fine. Don't worry."

Unexpectedly, as soon as the words were finished, Zhao Linger and Shangguan Feiyan ran into the vine basket like a gust of wind.

Qingyan slapped his forehead and sighed, "Sir, aren't you very fooling people on weekdays? Why did you say such unpredictable words this time? Ling'er and Feiyan are both masters. Can't they hear the loopholes in your words?"

"How can you blame Su? If you don't explain this, you can still say that you can grow wings." Although Su Ju knew that she had made up her words, she could not admit her mistake like this.

Looking at the firm eyes of the two girls, Qingyan could only say helplessly: "General Huang, today's wind is south, and I am 80% sure that the hot air balloon will fly to Xuanwu Lake. I hope you will send someone to maintain public order along the way, otherwise the people of Jinling will be very frightened when they suddenly see this thing."

"Abide by the orders of humble duties."

After explaining everything, Qingyan walked into the vine basket, "I know I won't chase you away, so I don't have much trouble, but I'll say it in advance. Do any movements should be as light as possible. Running and jumping are strictly prohibited. I'll let you do nothing."

The two girls nodded together, feeling very nervous and excited.

At this time, Huang Quan led dozens of soldiers to set up a shelf around the hot air balloon. Everyone carefully grabbed the balloon in their hands and tried to stand it up.

Seeing this, Qingyan knew that it was almost done, so he put a handful of flint powder from a large bag in the corner of the rattan basket and slowly placed it in the iron plate above his head.

"Get that iron ring."

"Oh!" Zhao Ling'er handed the thing to Qingyan very quickly.

The purpose of this iron ring is to be afraid of encountering strong winds halfway through. If the burning of flint is blown away or extinguished, everything will be over.

Taking a deep breath, Qingyan poked out the fire slit to ignite the flint.

With a "bang", a huge flame rose up, and a long column of fire was formed due to the iron basin and iron ring.

Everyone looked at the high flame nervously and prayed in their hearts that if the prince side by side could really realize the dream of the Huaxia clan for thousands of years, then they would be the witness of this miracle.

The soldiers on the wooden frame felt that the temperature of the airbags in their hands was getting warmer, so they slowly let go of their palms as the previous instructions of the prince side by side.

"It's moving!"

I don’t know who was the first to shout, but everyone did not care about who it was, but focused their attention on the vine basket. The bottom of Zhao Linger’s corner slowly floated up, followed by Shangguan Feiyan’s corner until the entire vine basket left the ground bit by bit.

Holding your breath is just the first step to success. The students looked at the vine basket with hot eyes, clenched their fists, as if they were one with the hot air balloon, carrying the dreams of countless generations and countless people.

"Brother! We really...we are really flying!" At first, Zhao Ling'er was very nervous and kept holding the edge of the rattan basket, but as the hot air balloon gradually took off, an unparalleled sense of excitement spread throughout her body. At this time, she plucked up her courage and looked down and saw that the people on the shooting range gradually became smaller, and the whole view of Yuetang Academy was already beginning to see the entire street scene.

"Yes, yes! We really flew up! This feeling... is so wonderful and amazing!" Shangguan Feiyan also looked at the crowd below excitedly, with excitement on her face.

"Two aunts! Didn't we agree to try not to exercise vigorously, but I'm really afraid that this vine basket can't bear it." Qingyan was so scared that his face turned pale.

The two women realized that their behavior was inappropriate, so they quickly squatted down and looked carefully at the blue sky and white clouds, but the excitement in their hearts did not weaken at all.

After clamping the iron ring with pliers and adding some flints, Qingyan smiled and said, "You won't be motionless, otherwise you will miss the beautiful scenery and it will be more than worth the loss."

"Brother, how did you learn to make this hot air balloon? Although you said that Gongshuozi had done it before, it was a thousand years ago. Now it really flew into the sky, and I still can't believe it."

"Ling'er's question is also what I want to ask. It's incredible where did you learn these skills." Shangguan Feiyan looked at Qingyan's face in admiration, and a strange light flashed in his eyes.

"Hehe, why don't you have the nerve to say that it's Ling'er's brother? You two will just think I'm a genius." Qingyan was very proud. "Actually, I have a lot of good things. I have never had the chance to try it before. When the world is peaceful in the future, I will make a huge hot air balloon and call relatives and friends to eat hot pot and watch the blue sky together. Wouldn't it be a pleasure for life?"

The people in the academy were all looking up at the sky with their hands and feet, and they felt that the prince side by side was indeed a genius, while the person outside the academy who did not know the truth was the opposite. I don’t know who was the first to discover a foreign object in the sky and then spread throughout Jinling City at an extremely fast speed. If Xuanwu Camp had not been prepared to explain that it was the prince side by side, there would have been a big riot.

Huang Quan also looked at the sky excitedly, thinking that what the prince said before was indeed false. If the hot air balloon was passed to the army, it would greatly enhance its vigilance and exploration ability. Whether it was night battles and sieges, etc., it would expect the enemy to be the first, which would greatly reduce the success rate of the enemy ambush.

At this time, no one noticed Su Ji's departure. At this time, he had already arrived at the gate of the academy.

He put the stool next to the recliner, and then handed the other party a small handful of melon seeds, "Did you see that guy in the sky? Do you know who is on it?"

"Aren't you just asking nonsense? The boy came in with a group of people eating imperial food, and I was not blind."

"What do you think Qingyan's mind is in? Although his blood is as smart as Xuan Ce, who did you learn this imaginative idea from?" Su Ju looked at the little black dots in the sky and sighed.

"Who knows, maybe it was an adventure I encountered in the past many years."

In the hot air balloon, Qingyan opened his arms and hugged the sky with all his heart. The fresh air smelled refreshing.

"Ling'er, Feiyan, it's a pity that we just watch like this beautiful scenery. It's better to shout out the wishes in our hearts to this sky, maybe it's possible that we can move the sky."

Without waiting for the second girl to respond, Qingyan took a deep breath and shouted: "I! Zhao Qingyan! I will spend my whole life cherishing my family, looking for my father and mother, as well as Huangqi of the Northern Mansion and Uncle Chen, and swear that I will not let the blood in my body be ashamed!"

After shouting, Qingyan felt refreshed and looked back and smiled, "It's your turn."

Zhao Ling'er was not shy either and shouted in a coquettish voice: "I! Zhao Ling'er! I will cherish my family like my brother, try my best to find my father and mother, and also! Don't let my grandmother marry me out, I want to live happily in the royal palace for the rest of my life!"

"Me! Shangguan Feiyan! I hope my father is healthy and healthy, and I hope that the person I like will notice me. I want to cook for him for the rest of my life!"
Chapter completed!