Leng Feng stupidly watched as soon as the enchantment opened, a silver-white 'magic weapon' jumped into the air like lightning, and the whole process was straight and without the slightest bend.

But then there was a roar.

Wait, that's not right, whose magic weapon will make such a loud noise when flying?

Leng Feng just stupidly watched the silver-white figure burrow into the white clouds, and then through the white clouds, and finally with his cultivation in the golden body realm, he could only see a small gray dot disappearing into the sky.

He wanted to follow along, but looked at the dozen or so masters of the Ocean Group who followed around the strange flying item, but he dispelled his thoughts.

The Ocean Group and any act of espionage is truly ruthless. For example, this base, it is said that it is close to the on-the-spot killing within a kilometer, and the result is that there is no mercy.

According to the Ocean Group, this place is so remote and desolate, and it is approached without the permission of the Ocean Group, what is it not a spy?

Leng Feng had seen it with his own eyes, a master in the late stage of the transformation of the gods wanted to spy on intelligence, but as a result, three masters of supernatural powers appeared directly here in the Dayang Group, and they were killed on the spot without saying a word;

So at this time, although Leng Feng was very curious, he didn't dare to jump out. He believes that as long as he jumps out, he will never be able to leave alive.

The cold wind could only wait quietly, waiting for the thing to return.

And this wait is half a day, until dusk.

…………

said that Lin Yinghao had already let go of himself at this time. Unlike flying by one's own spiritual means, flying an airplane is a different experience.

The strong sense of pushing his back made him feel an unprecedented sense of satisfaction, and he used the aircraft he personally designed and participated in the manufacture of to soar into the blue sky, and that pride has surpassed the limits of what words can express.

He even opened the cockpit and let the wind blow. At this time, although Lin Yinghao is not very old, he is already a little master in the early stage of the Yuan Infant. The 800-kilometer wind and low temperatures at high altitude did not affect him much.

Lin Yinghao roared, the throttle was pushed to the maximum, and the plane roared and rushed up layer after layer of floating clouds.

The higher you go, the thinner the white clouds become, and there is gradually an ethereal feeling.

I don't know how long it took to rush, Lin Yinghao gradually began to feel that the plane was a little difficult, and he gradually felt that the aura around him had decreased sharply.

It's at the edge of the Reiki layer!

Lin Yinghao looked at the altimeter, which showed an altitude of 62.7 kilometers.

The Ocean Group has investigated the height of the Reiki layer in detail, and the approximate average height is 66 kilometers according to the sea level, but the Reiki layer is not a fixed one, just like the sea surface, there will be large ups and downs.

In general, the approximate undulation range is about 62 to 68 kilometers. If you encounter bad weather, such as strong winds, the fluctuations will be more intense.

After a while, the plane jumped to a height of 63.2 kilometers, and at this time, the surrounding aura was almost gone, and the heavy gravity began to drag the plane downward.

Lin Yinghao felt the heavy gravitational pull, and his face became solemn.

As a scientific researcher of Dayang Group, and also in the field of aircraft, Lin Yinghao has a full understanding of the gravitational force of the planet and so on. Even Lin Yinghao has begun to study gravity and astrophysics with Zhao Dahe and others, and has achieved considerable results.

So Lin Yinghao knows very well what to do now.

The aircraft returned to horizontal flight and began to adapt and run in at this altitude. Of course, Lin Yinghao also wanted to conduct a simple test of the aircraft in this state, especially to detect the limit of the aircraft, so as to prepare for the next sprint.

The planes began to strike various flight attitudes in the sky. Of course, at this time, Lin Yinghao can only be said to be 'able to fly an airplane' at most, and he is still far from the real elite.

The extreme test of the plane lasted for half an hour, Lin Yinghao took a deep breath, and the plane began to climb again. But this time, the climb angle is only 1.8°.

Leaving the aura layer, the heavy gravitational pull seems to bind everything to the ground. The plane's engine began to make a dry roar, and the plane climbed extremely hard, dragging a tasteful black tail behind it, which was incomplete burning fuel.

Propeller aircraft, at ten times the standard gravitational force, perform inadequately.

Fortunately, the air is dense and provides a relatively objective lift, and the plane is still struggling to climb.

And at the edge of the aura layer, more than a dozen escort masters of the Ocean Group could only follow the plane around. These people looked shocked at this time, and looked at the free-flying plane at high altitude with their mouths wide open.

That plane flew above the aura layer without the help of aura, spells, formations, etc.! Previously, if the Ocean Group wanted to explore the space above the aura layer, it could only use hydrogen balloons.

But the hydrogen balloon is not free, and must be connected to the ground with the help of a long rope.

The Ocean Group also tried to study airships, etc., but in the end it had to end in failure. The air in this world is too thick, the wind is strong, the thrust is strong, and there are cultivators flying all over the sky, and airships are too vulnerable to attack and robbed.

Three years ago, the Ocean Group sold the airship, but soon the airship in the sky was shot down by an inexplicable attack. In the end, commercial airships or hot air balloons withdrew from the stage.

But the current plane, it seems, is different. No, it's very different!

Airplanes that can fly against the wind!

The flight altitude of the aircraft is related to the design, engine technology, outside air density and oxygen content -- the current aircraft still uses internal combustion engine technology, which requires air (oxygen) input from the outside.

It's just that for the time being, air compression technology has not been realized, and there is no turbocharging or turbofan technology, but only self-aspirated technology.

However, thanks to the thick air of this world, the plane still flew to an altitude of 108 kilometers!

At an altitude of 108 kilometers, this is more than 20 kilometers higher than the limit of the previous hydrogen balloon exploration of the Ocean Group!

At this height, the aura is almost negligible, and a little aura has long been unable to reduce gravity. And because there is no aura in the outside world, the true element in the body seems to be slowly dissipating!

Lin Yinghao looked at the measuring instruments in the cabin and showed that the gravity here was about 10.4 times that of the ground. Such a gravitational pull made Lin Yinghao only feel as if his body was filled with lead, and he didn't want to move his fingers. Fortunately, as a little master in the infancy stage, he can still resist.

Hovering at this altitude for a while, Lin Yinghao finally had a chance to look sideways at the ground. Because of the design of the aircraft, it is not possible to observe it directly, only from the side. But all I saw was white.

"Where did I fly to?" Lin Yinghao scratched his head, and he couldn't see the master who was following the plane directly below. And at present, the plane is still a single seat, and no one has discussed it with Lin Yinghao himself.

"Next time I design a two-seater!" Kobayashi grabbed his hair that was blown by the wind, saw that a quarter of the fuel was left, and controlled the plane to continue climbing.

Because of the reduction in fuel, the plane actually climbed another kilometer, but it could not climb to an altitude of 110 kilometers anyway.

The engine was roaring so hard that it had begun to shake. Behind the plane was a long black tail, which was inadequately burned fuel.

"It's the limit. 109.2 km! Well, next time hit 110 km altitude. Lin Yinghao muttered to herself, and the plane began to land.

But that's when something went wrong.

When the plane climbs, you can still see the ground, and there are references. But when the plane landed, because there was a white expanse below, Lin Yinghao ...... Lost frame of reference!

Flying in the sky, the most feared thing is to lose the frame of reference, which can be completely disoriented. Think about it in an empty sky, you can't tell the difference between up and down, left and right.

Especially when flying an airplane, it's just that you can't tell the difference between left and right, if you can't tell the difference between up and down, hehe......

Too many plane accidents are caused by this.

Airplanes are not ships, airplanes fly casually in the sky. Sometimes, even with the ground as a reference, it is normal to tilt about ten degrees.

At this time, Lin Yinghao encountered this situation. In the vast sky, I don't know where I am.

Lin Yinghao hesitated, suddenly reduced the fuel, and the plane quickly entered a stall under the heavy gravity and began to fall. And the direction in which the plane fell turned out to be the left front.

Lin Yinghao instantly determined the direction in his heart, and he had to pull up the flaps and wait for adjustments. But the power of the plane is too weak, the gravitational pull of the planet is too great, and the plane ...... Start circling!

"Not good!" Lin Yinghao was shocked. This is the world's first real test flight of the aircraft, a variety of aircraft experience and piloting technology and other blank, Lin Yinghao can now rely on his own understanding of aircraft, familiarity with fluid mechanics and scientific knowledge.

He forced himself to calm down, and then made a decisive decision - follow the direction in which the plane was circling, accelerate!

The aircraft engine roared, and Lin Yinghao gradually pushed the power of the engine to the maximum. A spiral trail was left behind the plane.

The plane accelerated and fell, faster and faster, but with Lin Yinghao's calm handling and as the air resistance increased, the plane finally gained lift again.

I don't know how long it took to be busy, with the sound of the engine slowly and steadily, Lin Yinghao gasped in a cold sweat. The plane finally stabilized.

Looking at the altitude gauge of the aircraft, it turned out to be only 83 kilometers at an altitude. Just now, the plane actually fell a full 26 kilometers!

But after such a crazy driving experience, Lin Yinghao suddenly felt that he was in control of the plane.

There was a flickering light below, which was the instructions given by the master of the Transformation Stage who followed below.

There was not much fuel on the plane, so Lin Yinghao controlled the plane to turn around and fly slowly downward.

When the plane finally entered the aura layer, Lin Yinghao had the opportunity to wipe his back, and he was already in a cold sweat.

"What happened just now?" asked Zhu Min, who followed the master, lying next to the plane.

"It's okay, it's just that the plane flew high in the air, couldn't see the ground, and lost its direction. When you go back, think about putting an instrument inside the plane that can indicate the horizon.

By the way, where are we now?"

Zhu Min nodded and said, "Now above Yongchang County, it is above the head of the Xinglintang Group. ”

As he spoke, a black spot was already approaching in the sky around him. If you look closely, it's some transformation periods, as well as flying boats, etc.

A master beside Zhang Hao shouted: "Dayang Group is testing new technology, outsiders are forbidden to approach!"

The voice was loud, and the people around him who were about to approach really stopped. But there are also people who haven't stopped, such as Zhou Shuhai.

Well, when they saw Zhang Hao's father-in-law, everyone could only pout, but they still tried to stop it.

Zhou Shuhai stopped a kilometer away and flew in the direction of the Ocean Group with everyone. Looking at the weird flying machine in front of him, Zhou Shuhai couldn't help but ask, "What is this?"

"Airplane! a flying machine!" Zhu Min was a little excited, he had been studying for so many years, and he was suffocated.

"Oh......" Zhou Shuhai responded a little stunned, and then looked at the plane in a daze, looking at Lin Yinghao in the plane, and didn't know what to say for a while.

This strange thing in front of him obviously exceeded the old man's comprehension. From Zhou Shuhai's eyes, it could naturally be seen that the thing was completely useless to use formations, spells, etc., and flew completely relying on the power of machinery.

Just, how is this done?

The plane flew forward at a speed of 800 kilometers per hour, protected by more than a dozen Transformation Stages of the Ocean Group on both sides, while more and more Transformation Stages were coming around.

Everyone looked stupidly at the strange machine in front of them and was stunned.