When the Kun fighter took off, it was natural to test its flight ability, and in order to avoid unnecessary panic, Bei Tang Yu flew the Kun fighter above the clouds, and then began to conduct flight tests.

Although it is very troublesome to manufacture a Kun fighter in the backward process of the feudal empire, and even some processes require the help of masters with fire attributes and even water attributes among the martial arts masters, the quality of the manufacturing is still very perfect.

Beitang Yu conducted a series of tests at high altitude, and this Kun fighter can be said to have been completed, but if you want to continue to manufacture, then the problem of craftsmanship is not something that Bei Tang Yu is worried about, and it will be good to throw it to Emperor Xue at that time.

When Bei Tang Yu stopped the Kun fighter smoothly, looking at the group of stunned craftsmen, Bei Tang Yu wanted to laugh.

"Okay, you just stay here and think about how to build this Kun fighter, I won't follow you in the future. Beitang Yu said to the many craftsmen.

And after Beitang Yu left, the head of the craftsman was still at a loss, and he didn't even understand how this Kun fighter flew.

"My lord, just now Lord Beitang said that we should build this Kun fighter by ourselves in the future, what do you think we should do?" said a craftsman with a bitter face.

The craftsmanship of the Kun fighter is too complicated, so complicated that it is not something that a craftsman can build, if it is not for Bei Tang Yu personally leading, plus Bei Tang Yu personally doing it, they would not be able to build it at all.

And now that Beitang Yu let it go, they didn't know what to do immediately.

"Hey, you guys look at this Kun fighter first, and maintain it according to Lord Beitang's words, these things are not something we can decide. The craftsman shook his head and said, his heart was also worried.

However, he knew that as a martial arts master, how could Beitang Yu waste all his time here? Therefore, the construction of the Kun fighter in the future was really something they could play, but the head of the craftsman still took capable craftsmen to sort out the construction process of the Kun fighter.

Beitang Yu returned to his residence, and the next day he began to find Tang Lao Dao, took his three disciples, and ran to find the Great Emperor and other offerings.

The Kun fighter is definitely a leapfrog weapon for the Great Xue Empire, and with this Kun fighter, it represents that the Great Xue Empire has air supremacy.

The importance of air supremacy for an empire, as long as people with a little common sense can know its importance, so Beitang Yu knows that as long as Emperor Xue knows about the Kun fighter, then it will definitely be able to attract his attention.

Emperor Daxue is usually a busy person, and Beitang Yu invited him over, he also looked at Bei Tangyu's face, of course, Beitang Yu was busy during this time, and Emperor Daxue also heard of it.

Emperor Daxue naturally didn't know what it was because Beitang Yu was busy making it, but from the spies' description, he knew that the thing made by Beitang Yu was a big thing.

"Beitang Offering, this is the iron bird you made?" Emperor Daxue looked at the Kun style fighter and said.

"That's the Kun fighter, it's supplied with fuel refined from petroleum, well, you don't know what I'm talking about, just go up and take a look. Beitang Yu finally said to everyone.

The Kun fighter was opened, and the interior was very spacious, with several worshippers plus 3 disciples of Emperor Daxue and Beitang Yu, as well as a few important ministers, so that Beitang Yu finally had to limit the number of people.

"Alright, everyone's seated. Beitang Yu faced everyone, and then operated the Kun fighter to take off.

The ministers on the periphery of the airport and the palace maids and eunuchs who followed the guards and servants who protected the emperor all showed stunned expressions after seeing the Kun fighter take off.

The Kun fighter took off, and it really scared the Great Xue Emperor and everyone sitting inside.

"Can it fly?"

Tang Lao Dao was shocked, Bei Tang Yu told him about the plane or something before, but Tang Lao Dao only thought that Bei Tang Yu was casually talking and playing, who knew that Bei Tang Yu really built this Kun fighter.

"Otherwise, what do you think I've been doing all this time?" said Beitang Yu with a smile.

And the take-off of the Kun-style fighter surprised the worshippers, but the Great Xue Emperor was excited, because Beitang Yu's description can know that the Kun-style fighter can dominate the air, and such an armament can completely lead a large number of troops to the enemy's rear to ambush, and even directly raid the opponent's imperial capital.

However, in order to do this, first of all, there must be a large number of Kun fighters, such an airfield is obviously not enough, and at the same time there is a supply of fuel, without fuel, even if there are more Kun fighters built, it is useless.

At this moment, both Emperor Xue and the worshippers know that the seemingly black oil, which was originally useless, can now become a strategic material.

"The following matters will be handed over to you, the Emperor, this is my gift to the Emperor. Beitang Yu said to the Emperor.

After flying in the air for a period of time and testing the performance of the Kun fighter for everyone, Bei Tang Yu parked the Kun fighter on the airfield.

"Beitang worship, this has to trouble you, after all, no one knows how to make this thing, I think those craftsmen must not have learned, and this Kun fighter, it should be difficult to learn how to use it, right?"

Looking at the dense operation buttons on the Kun fighter, the Great Emperor felt very complicated, not to mention those offerings, the attacks on those offerings have not yet seen how Beitang Yu operated just now.

Just flying in the sky, everyone was looking at the scenery in the sky, and they really didn't notice that Beitang Yu was like a Kun fighter that could be operated, and seeing so many complicated buttons in the cockpit, the worshippers all had a feeling of uncertainty.

"Old Tang, I'll teach you first, and then you're handing it over to someone else. Beitang Yu said.

Bei Tang Yu didn't want to waste his time on this, and after teaching one after another, wouldn't he be tired? Seeing that Tang Lao Dao looked like he wanted to learn, Bei Tang Yu simply taught him.

"Okay, hurry up and teach me how to use this Kun fighter. Tang Laodao was a little happy and wanted to learn how to operate the Kun fighter.

"Before I teach you, I think the others should go down, or you won't be able to afford if something goes wrong. Beitang Yu smiled.

And thinking that Tang Laodao didn't know how to operate at all, the emperor and others got off the Kun fighter one after another, they didn't dare to take the novice's plane, if something happened in the air, who would they go to?