Ling Yu came back to his senses at this time, looked at Yu Cheng, and said, "Please ask Father-in-law Yu to solve my doubts." ”

"Hehe, Ling Hou don't have to doubt, Your Majesty actually wants some people to see the strength of the Great Zhou Imperial Court now, so that they know that they can't fight against the Heavenly Soldiers, in addition, Your Majesty also asked the slave maid to tell Hou Ye that it was not for them to visit the Academy of Sciences, but just to watch the hot air balloon test flight on a limited venue, just like Hou Ye didn't let Na Yingyi watch the military exercise in the base military camp before." Yucheng said with a smile.

Ling Yu suddenly realized that there was nothing wrong with looking at the test flight, and it could also let some people know the strength of the current imperial court, but Ling Yu was still faintly worried in his heart, wouldn't this make those people jump off the wall in a hurry?

After thinking about it carefully, Ling Yu smiled dumbly, the Yang plot he had laid out before had now worked, and the Zhao family was already making the kind of mutilated musket that Ling Yu had given, presumably they would still hold it back no matter what it was.

Ling Yu didn't think much about it anymore, he needed to go back and make a little preparation before the emperor brought people to arrive.

Hurriedly out of the palace, Ling Yu soon arrived at the Academy of Sciences, Zhou Shaobin had already arrived, this is not surprising, after all, Zhou Shaobin usually does not go to court, and today Ling Yu went to court a little later than him.

"Baked cakes, your father will bring the courtiers over to watch the hot air balloon test flight later, we have to make some preparations." Ling Yu said to Zhou Shaobin.

"What? You said that my father wanted to bring his ministers to visit? Zhou Shaobin was a little unacceptable all of a sudden, he was the same as Ling Yu thought at the beginning, he was so strict and guarded before, and now he actually took the initiative to bring people to visit, what kind of demon wind is blowing.

"Don't think about it, Your Majesty's thinking will definitely not be a problem, but we just want some people to understand the strength of our Great Zhou, let's cover up the things that can't be seen near here, this big guy is not easy to move, otherwise it will be perfect to go to the school." Ling Yu looked around, fortunately, this is not the most important workshop of the Academy of Sciences, at that time, due to the relatively large size of this hot air balloon airship, a place was specially opened up to build, which was also convenient for Zhou Zhengxiong to bring people to observe.

The two of them, with their craftsmen, quickly took care of the things around them that could not be seen by others, and then waited here for the emperor to arrive.

They didn't wait long, and the emperor took his ministers and entered the base of the Academy of Sciences.

Of course, after Ling Yu and the others dealt with it in advance, some people naturally didn't see anything, and they went all the way to the dry dock as usual.

Zhao Zhengkang also looked at the base of the Academy of Sciences curiously, but he didn't see anything, but he just knew that there were a large number of troops training in the barracks of the Academy of Sciences base, and the guns crackled one after another, but they only heard it, and they didn't see it if they didn't go in.

This made Zhao Zhengkang and the others feel a lot heavier in their hearts, they had only heard that Ling Yu seemed to be doing something big again, and they had purchased a lot of shipbuilding materials, but now they entered the dry dock to know that this was shipbuilding, of course, this is the understanding of Zhao Zhengkang and others, they don't know what a hot air balloon is.

"See Your Majesty, I've seen all of you." Ling Yu saw Zhou Zhengxiong leading everyone in, so he stepped forward to salute.

"Well, Ling Aiqing, don't be polite, let's start." Zhou Zhengxiong waved his hand, and then rested and waited in the pergola that Ling Yu had built earlier, while the other ministers did not have such a good treatment, they all stood there waiting under the scorching sun.

Seeing the emperor's order, Ling Yu led the craftsmen and began the final assembly procedure of the hot air balloon airship.

Since the preparation was sufficient, the assembly was also completed quickly and smoothly, Ling Yu ordered the hull of the hot air balloon airship to be firmly fixed to the ground with several cables, and then ordered the ignition to start inflating the sphere.

Eight psionic hot gas stoves are set up on the entire hot air balloon airship, which is to ensure that there is a sufficient supply of hot gas, and the eight psionic hot gas stoves are blazing, and the sphere is also bulging at a speed visible to the naked eye, gradually revealing its oval body.

After a while, the balloon was already full of heat and had flown off the ground, but it was firmly pulled by the cable, just a little off the ground.

Seeing this, Ling Yu walked to the pergola and said to Zhou Zhengxiong: "Your Majesty, the hot air balloon has been inflated and can take off, please give your Majesty's order." ”

"Well, Ling Aiqing, then take off, I want to see how you fly with people." Zhou Zhengxiong said with a smile on his face, he had been watching Ling Yu fill up the hot air balloon and then fly off the ground, his eyes were full of surprise.

"Your Majesty." Ling Yu respectfully arched his hand towards Zhou Zhengxiong, then looked at the ministers on the side and smiled: "I don't know which adult has the courage to fly with Ben Hou?" ”

The ministers' faces changed drastically, and they were naturally a little afraid of unknown things, so at this time, no one stood up and said that they wanted to go together.

Zhou Zhengxiong watched Ling Yu teasing these courtiers with interest, and he also wanted to see if anyone had the courage to try.

"Marquis Ling, I don't know how this official is going with you?" Zhao Zhengkang stood up and said.

Ling Yu looked at Zhao Zhengkang in surprise, he didn't expect that he was the first to stand up, wasn't he afraid that he would throw him down in mid-air?

As if seeing through Ling Yu's thoughts, Zhao Zhengkang said with a smile: "Presumably Marquis Ling will guarantee the safety of this official." ”

"Hehe, Lord Zhao is serious, I dare to go up, it is naturally safe, Lord Zhao, please." Ling Yu smiled and made a gesture of please, while Yang Yuan on the side guided Zhao Zhengkang up from a ladder next to the hot air balloon airship.

"Hehe, since Lord Zhao dares to go up, then the old man should also go up and have a look." Song Qian also walked out with a smile on his face, the other party dared to go, why didn't he dare.

When Ling Yu saw Song Qian come out, he invited him to the hot air balloon airship with a smile on his face.

After waiting for a while, seeing that no one responded, Ling Yu turned around and stepped onto the heater airship.

The airship is actually very stable, because it is designed according to the ship, so it is also very spacious, and it will not shake at all when you walk up, of course, this is also the power of the psionic hot gas furnace.

The standard operator of the heater airship is 10 people, and there are various psionic technologies, so the operation does not require a lot of people, one captain, 4 people take care of two psionic hot gas stoves, the other 2 helmsmen, control the direction, and 2 are the personnel of the propulsion module.

In addition to the operators, there were also Wu Yong, Yang Yuan and other master craftsmen accompanying him this time, and some technicians followed to collect data, about forty or fifty people.

Ling Yu took Zhao Zhengkang and Song Qian to the bow of the boat, where Ling Yu specially arranged a viewing platform, and after leading everyone to sit down, Ling Yu took a pit and left to arrange take-off. Beauty Nest

The captain is a soldier of Ling Yu's guard company, in order to allow him to operate the hot air balloon airship, Ling Yu has personally trained him for a long time, of course, people in other positions are the same, but today they are all on the boat for the first time, Ling Yu is also a little hairy, worried that they will make mistakes.

"Report, propulsion power compartment is normal."

"Report, the Psionic Stove is normal."

"Report, the steering machine is normal."

Captain Cheng Zhiwen listened to the reports of the heads of various positions under him with a calm face, and after confirming that all parts were normal, he said to Ling Yu, who was watching from the side: "Report to Master Hou, everything is normal with the hot air balloon airship, please take off." ”

"Well, permission to take off, reel in the cable." Ling Yu said decisively.

"Yes." After Cheng Zhiwen saluted, he picked up the communication machine and instructed the ground crew on the ground to cut the cable.

After a while, all the cables were put away by the crew on board, and the hot air balloon airship lost its restraints and began to slowly rise into the air.

Zhao Zhengkang and Song Qian were sitting on the observation deck chatting, when they suddenly felt their bodies being lifted, and hurriedly grabbed the handrail nervously.

"Hehe, you don't have to be nervous, this is a normal phenomenon for a hot air balloon airship to take off, it will be fine in a while." Ling Yu walked over slowly and said with a smile.

"Hehe, Ling Hou, I just told Lord Zhao just now, what kind of situation is it to take off later, this flying sky is also the dream of many people, I didn't expect the old man to experience it in his lifetime." Song Qian listened to Ling Yu's comfort, then relaxed and said with a smile.

"Ling Hou is a great talent, such a thing, the old man can't even think of it, thanks to Ling Hou's blessing, now the old man can experience it without thinking about it." Zhao Zhengkang also stroked his beard and smiled, at this time, several people did not feel right at all, but chatted like friends.

"Report to Master Hou, it is currently 300 meters above the ground, whether to open the air barrier." Cheng Zhiwen stepped forward and reported.

"So fast?" Ling Yu didn't expect to talk a few words, the hot air balloon airship had already flown to 300 meters in the air, it was summer, the altitude was not high, and he couldn't feel cold, so Ling Yu ignored it.

"Well, let's turn it on." Ling Yu thought for a while and said, after all, the higher the wind, the greater the strength, although the two old men who followed the test flight were not very old, but they were not small, it would not be good to blow it bad, although Ling Yu wanted to blow Zhao Zhengkang very much, but he couldn't let him have anything to do at this time.

Cheng Zhiwen was ordered to make arrangements, and Zhao Zhengkang asked with interest: "Ling Hou, take the liberty of asking, what is this air barrier?" ”

"Hehe, Lord Zhao, this hot air balloon airship will fly higher and higher in a while, and the high air wind is fierce, and this air barrier is to block these winds from the side of the hot air balloon airship, and it will not block the sight of the passengers on board." Ling Yu simply explained that this air barrier was deduced by Xiao Ling through the brake runes of the psionic locomotive, and its function was very simple, that is, to block the wind in the sky.

Zhao Zhengkang nodded, expressing his understanding, he never knew that spiritual energy could still be used like this, and his heart became more and more heavy, with a demon like Ling Yu, did the Zhao family really have any hope of success?

If there are too many such hot air balloon airships, just send some to fly to Beiping Mansion, and then the gods will descend from the sky, I'm afraid it will be difficult to deal with.

Unlike him, Song Qian looked at the hot air balloon that was rising rapidly, and walked to the side of the boat to look at the ground where the distance had been widening rapidly.

"Ling Hou, how high can this airship fly?" Song Qian asked with a smile.

"Lord Shousuke, the design height of the hot air balloon airship is 10,000 meters, but we don't dare to fly so high in the first test, after all, we don't know what danger will occur, and it will stop about 1,000 meters." Ling Yu explained with a smile, in fact, it is impossible for an ordinary hot air balloon to fly so high, but who made Ling Yu have spiritual energy and runes.

"Report to Hou Ye, the hot air balloon airship has reached an altitude of 1,000 meters, and his subordinates have ordered the psionic hot gas stove to keep it hot and hover at this altitude, now please ask Hou Ye to indicate whether to turn on the propulsion system and test the speed." Cheng Zhiwen stepped forward to report.

"Well, let's start, speed up slowly, don't scare the two adults." Ling Yu said.

Cheng Zhiwen took the order again, Ling Yu turned his head and smiled at the two: "Two adults, we will test the flight speed of the hot air balloon airship in a while, and the two adults must be mentally prepared, there may be some vibration later." ”

"Hehe, it's okay, the old man's receptivity has been tempered by Ling Hou to get stronger and stronger." Song Qian said with a smile, sat on the chair, and grasped the armrests with both hands.

Zhao Zhengkang smiled and didn't speak, but also sat down and grabbed the armrest.

Suddenly, a sudden push of the back came, and Ling Yu knew that the hot air balloon airship began to accelerate, which was also the most important part of Ling Yu, this link determined whether the hot air balloon airship had actual combat value, even if it was not as good as Ling Yu's imaginary airship, he also hoped that the hot air balloon airship had some value.

Gradually, the speed exceeded 40 kilometers per hour, followed by a jolt, and then the speed decreased again, which stabilized the whole hot air balloon airship.

Ling Yu was a little disappointed in his heart, this is still a big gap with the airship he wants to fly more than 200 kilometers per hour, this is not a problem with the power system, the maximum speed of the power system he designed can reach 200 kilometers per hour, which is also related to the structure of the hot air balloon airship, after all, it is a big sphere on it, even if it is protected by spiritual energy, it is impossible to fly too fast.

In the end, the flight speed of the hot air balloon airship stabilized at 40 kilometers per hour, and Cheng Zhiwen walked up and said: "Master Hou, the hot air balloon airship has been tested, and the most stable speed should be 40 kilometers per hour, no matter how fast it is, it will not be safe." ”

"Well, I feel it, it's already good, you've worked hard." Ling Yu said.

"Ling Hou, this speed is already very good, the fastest horses will run at this speed, the hot air balloon airship is flying in the air, it will not be affected by the road conditions, presumably the traffic will be more convenient in the future, how do you think the old man seems to be a little disappointed." Song Qian asked puzzled.

"Shousuke-sama, to tell you the truth, my original design was intended to be 200 kilometers per hour, but at that time I knew that the hot air balloon airship could not reach it, and I didn't expect the gap to be so big, so I was a little disappointed." Ling Yu smiled bitterly.

"Hiss" Song Qian and Zhao Zhengkang gasped, at a speed of two hundred kilometers per hour, it would only take a few hours to fly from the capital to Beiping Mansion, Song Qian was very excited, since Ling Yu proposed it, then he knew that Ling Yu would definitely be able to build such an airship in the future.

Zhao Zhengkang's heart sank to the bottom, such a 40 km/h airship has already made him feel extremely threatened, if Ling Yu is allowed to make a 200 km/h airship, then how to play, the Zhao family will go to hit the wall, and he decided in his heart that no matter what the price is, he must also suggest that Zhao Ritian ask Mu Qingfang to get rid of Ling Yu, otherwise the Zhao family may not have a chance to win.