The drone roared into the air along a relatively flat makeshift runway.

The whirling air currents send sand and rocks flying on the ground.

The slender fuselage rises deftly into the sky, showing good mobility.

The Rainbow-3 UAV is codenamed CH-3 UAV.

It is independently developed by the Aerospace Aerodynamics Technology Research Institute of the 11th Research Institute of the Aerospace Science and Technology Group Corporation and the current Aerospace Rainbow Company.

It is an unmanned aerial vehicle that is operated by a radio-controlled device or its own programmed control device.

As a medium-range UAV system, its main equipment components include: UAV body, ground telemetry remote control station and ground support equipment.

In addition, the Rainbow-3 UAV uses a piston engine and can reach an astonishing range of 2,400 kilometers.

The cruising time can be up to 12 hours without refueling.

The aircraft is equipped with high-precision ultra-wide-angle photography and video devices, and can be used as a precision reconnaissance aircraft.

Using its own aerodynamic stability and track planning, the Rainbow-3 UAV has been able to achieve low-altitude flight autonomously.

Generally speaking, in undulating mountainous areas, the Rainbow-3 UAV generally has a ground altitude of 100 meters, and the lowest altitude is 30 meters above the ground.

In addition to its military use, it is also prospecting through aeromagnetic sensors.

In total, Rainbow-3 has completed more than 50,000 kilometers of survey line production flights for the geological department.

It is worth mentioning that in the past, general aviation aircraft or small transport aircraft were mostly used in aerial geophysical prospecting, and manned pilots were easy to fatigue and cause danger when flying in low-altitude conditions for a long time, and the accuracy of the route was also affected by human factors, and it must be carried out during the day.

The rainbow UAV can just make up for this shortcoming, with high safety, high level of automation, and can be dispatched day and night, so that the UAV aerial geophysical prospecting can be normalized, which greatly improves the efficiency of production operations.

Its practicality and reliability have long been proven in practice.

The foreign trade price of this drone is as high as millions of US dollars.

There weren't a few in Ichinnong's hands either.

After Chen Xuan asked him to take three flights, even if he signed the contract, the guy still had a painful expression on his face.

Now it seems that it is indeed a bit famous.

And this Rainbow-3 UAV is mounted with live ammunition.

Equipped with precision-guided bombs and two air-to-surface missiles.

The integrated investigation and combat UAV, as the name suggests, is a UAV that integrates the two roles of reconnaissance and strike.

Even check with hit, even hit with check, the main thing is a practical!

After the Rainbow-3 lifted off, the footage was transmitted to the turntable below.

It's still relatively close, so there's no delay.

And the radio environment of the Naroa continent can be described as "clean".

There is no electromagnetic interference.

All of this makes unmanned transmission more stable.

However, due to the lack of support from local base stations and Beidou, it is now unable to complete long-range operations.

Otherwise, theoretically, this Rainbow-3 could almost fly from Magdam City to the Black Leaf Outpost.

Of course, this is the limit of a one-way trip.

If you consider the round-trip journey, you have to refuel at least once on the way.

Chen Xuan controlled Rainbow-3 to fly towards the fog-shrouded canyon while staring at the screen, cautiously observing any abnormal movements that might occur.

After all, it's a being marked as "Extremely Dangerous".

I'm afraid that even the previous [Lava Lake], [Willow Forest], [Mire], and [Silver Lake] The four major elemental lands combined are not as dangerous as this canyon.

The distance of five kilometers is nothing, and after only a minute, Rainbow-3 is close to its destination.

It cruises at an altitude of about 100 meters above the ground.

This height is not too safe, and Chen Xuan is also ready for the drone to be damaged.

Either way, as long as there was movement below, he would be able to see some clues.

A safe distance of five kilometers should be sufficient.

Chen Xuan's main focus is a steady.

Only send drones to investigate first, and never rush into danger yourself.

Maintaining awe is also a basic operation, which can prevent dangerous situations that may arise for Chen Xuan.

Even if Chen boasted that he had the ability to plug in, he still didn't get carried away.

The power of the timing comes from the rules, and he already knows that there are rules that can stand against his time.

There is no absolute, only relative.

If he forgets his awe, it is easy for him to suddenly overturn in the midst of expansion.

In this regard, Chen Xuan deeply agreed.

Attention is focused on the footage of the drone's feedback.

The ultra-high-definition wide-angle camera allows most of the details to be seen at a glance.

The fog that churns above the canyon is quite active, not like it was naturally formed.

However, to his surprise, even though the drone was scouting above the canyon, there was no unusual movement below.

It stands to reason that if you get too close to an extremely dangerous place, you will be attacked.

But the case of drones proves that there is something else going on in this matter.

Thinking of this, Chen Xuan couldn't help but squint his eyes.

He didn't rush to control the drone to attack the canyon below.

Instead, it was even more daring to reduce the flight altitude.

It even flies with the fog and uses the sweeping air currents to slowly blow it away.

The canyon is also 100 meters deep and two or three kilometers wide.

It's basically like a mini-basin.

The thick fog gradually drifted away after the drone boldly lowered the altitude to the sky.

At the same time, it also sent back footage closer to the surface of the canyon.

In the trance-like mist, Chen Xuan vaguely saw the upper part of a huge stone tower that was in tatters.

The style of that stone tower is very rough, a bit like the Leaning Tower of Pisa in the Blue Star.

But it's not slanted, and it occupies a very impressive area.

In terms of size alone, at least the Eiffel Tower is multiplied by ten times the level.

It's just that the appearance looks more retro by the standards of Blue Star, with a clear European and medieval style.

The main body of the stone tower is more or less intact, except for many gaps.

The surface is slightly mottled, without any bells and whistles.

No matter how you look at it, the stone tower is filled with an eerie feeling.

In particular, it is home to mysterious ancient ruins and misty mountains full of puzzles.

The top of the stone tower in the canyon has obvious traces of fracture and damage.

It turns out that this is not the full version of it.

It is definitely a strange thing that a stone tower suddenly appeared in such a place.

Just as Chen Xuan was planning to control the Rainbow-3 drone to continue to reduce altitude.

The image transmitted by the drone suddenly swayed.

This means that its flight is disturbed, and there is some kind of strong air flow around it.

In the next moment, the canyon floor, which was faintly visible in the picture, suddenly burst open.

A large cluster of purple-brown tentacles gathered together burst out.

Like a cluster of vines that suddenly appeared.

Each tentacle is more than three meters in diameter.

There are also twisted and trembling "fluffs" on the top.

They are said to be fluff, but their thickness is also comparable to that of an arm, which is a miniature tentacle.

One of the large tentacles suddenly wrapped up in the drone.

Those fluffy little tentacles are wrapped and clinging, like barbs on the tongue of a tiger, and if they are glued, don't want to get rid of them easily.

The tentacles dragged the Rainbow-3 machine to slam into the ground.

Chen Xuan, who watched this scene, was dumbfounded.

But he didn't hesitate to be surprised, and before the drone was destroyed, he activated the weapon command.

Guided bombs and air-to-surface missiles carried on it were fired indiscriminately.

The picture disappears completely.

And about a second later, a swollen fireball exploded into the canyon five kilometers away.

The scorching fireball swept away the mist, and the ring-shaped air flow swollen, making the canyon in the distance instantly clear.

The waving tentacles were long enough to even loom out of the canyon.

It's so eye-catching in the light of the fire.

Chen Xuan's brows furrowed, and his expression became a little ugly.

"What the hell is that?"

He pondered in his mind.

The expedition members who stayed behind him also witnessed this scene.

The tentacles waving in the sky were scary enough.

The most outrageous thing is that the tentacles alone are hundreds of meters long.

How huge the monster must be.

In such a comparison, even the body of the Willow King rooted in the ground before was not as good as this unknown monster!

And in the final image transmitted back before the Rainbow-3 drone was destroyed.

Chen Xuan vaguely saw the bottom of the stone tower, and there seemed to be an entrance with rippling blue water ripples.

Speaking of which, it's a bit like a void passage.

It's just that the specifications are much smaller.

This also gave rise to some speculation in his mind.

The explosion died down, and the fog that had been blown out closed in the middle.

After only a few minutes, it was back to being shrouded in thick fog.

Chen Xuan frowned, considering whether to test it again.

Let's see if the time-stop works on that monster.

Thinking of this, he first asked the expedition members to continue to retreat.

He himself activated the [Empty Spirit] wings and flew into the air, quietly approaching the terrifying canyon at a height of thousands of meters above the ground.

As expected, as long as the altitude is not lowered, it should not be attacked.

This is the experience that Chen Xuan exchanged for a Rainbow 3.

Worth millions of dollars.

After determining the reliability of this, Chen Xuan took out two 155mm high-explosive grenades from the storage compartment.

Dismantle the impact fuse and throw it vertically into the canyon.

It is worth mentioning that when he gets close to the canyon, the [Same-Domain Flash] becomes ineffective.

This means that there is some kind of spatial interference of no lower order in the vicinity.

Staring at the two 155mm high-explosive grenades falling into the canyon.

Watching them swing away the mist and finally disappear into the thick fog, Chen Xuan showed a thoughtful expression.

A few seconds later, the explosion came.

Two orange fireballs rose in the white mist.

The fog was dispersed again.

Taking advantage of this opportunity, he finally saw the clues at the bottom of the stone tower.

The blue water ripples at the entrance, which were about ten meters in diameter, should have been some kind of portal.

There are quite a few craters in the ground near the huge one with a diameter of several hundred meters.

The potholes looked dark and had a bottomless feeling.

At the same time, the tentacle monster, which had been repeatedly disturbed by the explosions, reappeared, and more than a dozen huge tentacles poked out of the crater near the explosion point, flapping wildly.

It can be seen that the body of this monster is hidden deep underground.

The tentacles flapped and scrambled for a moment, and then hurriedly retracted to the ground when the flames were gone.

Chen Xuan saw this and instantly counted.

First of all, the possibility that these tentacles can attack the sky can be ruled out.

At least a kilometer is beyond its reach!

Thinking of this, Chen Xuan felt a lot more relieved.

But to be on the safe side, it's better to be tempting.

Thinking of this, he took out the CG4 recoilless cannon and fired a white-scaled bullet at one of the potholes.

Then he took out a [gasoline napalm incendiary bomb] and threw it into it one after another.

Flames burned, black smoke replacing mist.

However, the pit was obviously not shallow, and Chen Xuan, who was in the air, could only see the black smoke wafting up, as well as the faintly flickering orange fire!

But a dozen seconds passed.

Chen Xuan saw the earth below tremble violently.

The monster was clearly enraged by this behavior.

In the next second, a large ball of fiery tentacles emerged from the crater greeted by the incendiary bomb.

They don't seem to be afraid of fire.

Even though napalm burned like maggots on tarsal bones, it didn't change much.

All the tentacles suddenly probed into the sky, reaching directly more than a hundred meters above the canyon before stopping.

This means that the length of these tentacles protruding from the ground is two or three hundred meters.

And an even more striking scene appeared.

The top of the tentacle in the center actually quickly produced a fruit.

And the fruit burst out quickly.

Inside is a big eyeball.

It stared at the sky and soon spotted Chen Xuan, who had launched the [Second Order Stealth].

The vicious glint in his eyes made Chen shudder.

This is not the end, locked Chen Xuan's position, but when the monster found that the tentacles could not attack him.

The tips of the tentacles grinned, revealing a hollow tube one meter in diameter.

Then the front ends of those tubes were visibly glowing with a pale green.

Just a second later, green beams of light shot up into the sky, heading straight for Chen Xuan.

Without any hesitation, long before the beam was brewed, Chen Xuan had a strong sense of crisis and activated the [Time Stop] plug-in ability.

The ripples of the time series ripple instantaneously.

These beams are fast and have beam-energy weapons-like properties.

But the time stop works faster.

The beams had barely shot out and everything was silent.

Chen Xuan didn't dare to stay in place at all, and decisively flapped his wings and flew away from that area.

His current time stop can work continuously for more than twenty seconds.

But for that monster, apparently an exception.

Just as he had feared.

Ripples appeared in the space around the monster's tentacles.

It only took more than ten seconds before and after, and it broke away from [Time Stop] in advance.

Great Terror! Unbeatable!

Those beams of light hit Chen Xuan's original location in an instant.

Then it flew into the sky farther away.

Only trails like green lines were left.

Beam energy weapons can't be dodged by reflexes.

Those tentacles quickly locked onto Chen Xuan's new position, and a new beam of light brewed.

And Chen did not hesitate to launch [Time Stop] again

……

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(End of chapter)