The rockets emitted by the recoilless cannon mounted under the fuselage of the drone were launched one after another, dragging a long tail flame and falling on the concrete fortifications outside, and the diffused air waves overturned the nearby vegetation and the thick dead branches and leaves on the surrounding soil layer, and the dense explosion of high-temperature fireballs ignited these flammable materials, and the high temperature and rapid fire quickly burned them and carbonized them and even burned them into ashes. They all fell into the nearby layer of fallen leaves that were blown away by the air waves, causing more ignition points.

Soon, the thick smell of gunpowder smoke mixed with the choking smoke of combustion, spread throughout the mountains and forests.

A wildfire is spreading as the fighting spreads.

However, the surface of the concrete buildings that were not hidden in the soil were only left by the continuous bombardment of the rockets, and it seemed that the bombing had caused a lot of damage, but the secret research room was still strong and solid.

After all, this secret laboratory was built completely according to the standards of permanent reinforced concrete fortifications, and most of the building structures were hidden in the hollowed-out space of the mountain, and the lethal and destructive effects of rockets

But Sibylla's means are not limited to these.

The artillery positions have been erected, the clusters of recoilless guns are scattered, and the next thing is to carry out a fire cover strike.

This information flowed and relayed in the chain of command of the drone cluster, and in the mechanical city thousands of miles away, Sibylla divided several threads to deal with this side of the affairs issued a command message to the front-line troops, and the drone with a mouthful of recoilless guns on the front line was scattered as soon as the order arrived, and it was reduced to zero and evacuated from the artillery strike range of the front line in an instant.

Several self-propelled guns have been erected on the artillery position outside the limit of the distant field of vision, the appearance of these self-propelled guns looks very different from the self-propelled guns in the conventional sense because it is designed as a fully automated structure, and does not require manual operation, so it does not take into account the protection problem at all, except for the computer hidden under the layers of armor protection, the body has almost no armor protection, and the completely open vehicle design is selected, and the interior space of the huge front is all used to strengthen the performance and horsepower of the engine. In order to make these self-propelled guns more versatile, Sibylla also gave six of these self-propelled guns to fix the ground at the time of design, and the balance arms that produce huge recoil when the shells are fired have been magically modified, so that they can be transformed into machine feet that can cross mountains and mountains instead of tracks and wheels to cross special terrain after deployment.

This series of design concepts, which do not consider aesthetics and comfort, but only focus on enhancing performance, finally turns these self-propelled guns into deformed monsters that are incomprehensible to ordinary people, a tracked truck with a huge nose but no driver's seat, loaded with a huge cannon that can be called a behemoth on the body without any protection, like a huge and hideous barrel like a wild beast, and the six balance arms full of power have been deformed and unfolded into a fixed pattern, firmly rooted in the earth.

The calculation is complete, the final fine-tuning and calibration of the gun is over, and the countdown is countdown, three, two, one fire!

The deafening shelling was as continuous as a summer thunderstorm, taking into account and calculating various factors such as wind direction, recoil, distance, ballistic speed, humidity, combat environment and airflow state, and finally obtained that the perfect trajectory of the shells crossed a beautiful arc in the air, and advanced perfectly according to the trajectory calibrated by Sibyla, and the large-caliber shells weighing more than 100 kilograms were wrapped in a sharp sound of breaking the sky, and finally hit the exposed concrete structure with precision. The violent explosion caused by the impact sent the surrounding rubble and dust flying.

The continuous bombardment, coupled with the calibration accuracy of Sibylla's powerful computing power as a super artificial intelligence, soon, with the armor-piercing effect caused by several shells hitting the same landing point, completely destroyed the outer concrete structure, and a shell finally fell into the research room along the blasted passage and exploded, and the surface soil layer trembled slightly under the impact of the internal explosion.

Perhaps it was the relationship between the shells falling into the arsenal, and the explosion of the shells caused a chain reaction on the gunpowder in the arsenal, which caused an even more violent implosion

After an even more dull sound, the soil layer where the shell exploded suddenly bulged to form a large bulge of earth, and then the large soil bag immediately produced a large area of collapse, revealing a large area of internal passage that was originally hidden under the mountain soil layer, and now caused a large-scale collapse due to the gap created by the implosion.

This secret laboratory, half-hidden in the belly of the mountain, has been opened with shells by Sibylla's drone swarm.

The shelling is over, and the tactical squad is assembled!

Thousands of miles away, an invisible chain of command was transmitted to each drone, and multiple automatic artillery pieces stopped shelling in unison, and at this time, the land traveling machines lurking in the mountains and forests finally entered the field.

The lower part is an armored car shaped like a miniature version of the tank, the body proportions of the armored car are not only much smaller than the normal tank, but even the normal-sized car is a few laps larger than the small armored car, not so much a miniature version of the tank, but a model toy is more appropriate.

A stout mechanical skeleton occupies the position of the main gun of the small armored car, and the internal winding lines and mechanical structures interact with each other, towering up to connect the armament part of the upper half of the landing machine, a cannon or two machine guns, a fixture for erecting and stabilizing the machine gun or cannon, and a rectangular optical detection device shaped like some kind of surveillance camera.

In indoor combat, due to space limitations, the air supremacy and maneuverability of unmanned aircraft as an advantage will be weakened, and the conventional land machine is similar in size to ordinary people, and in this case it is better at land combat than drones.

The tactical team invaded the research laboratory and captured Jekyll, the leader of the Tiehua Regiment, alive.

With a command, the engines roared, the steel tracks rolled forward, and the land machine passed through a thin wall of fire, climbed over the previously potholed ground by rockets and armor-piercing shells, and slowly but surely drove into the secret research room.

The cacophony of sirens was incessant, and every passage turned red as blood under the flickering of the alarm lights.

Jekyll walked briskly through the flickering passage of the siren lights, weaving through the intricate labyrinth of passages, using the home advantage of his familiar terrain and the layers of alloy protective doors in the inner passage to cleverly avoid and divide the batch of land-based machines that had invaded the secret research room.

If it is a dangerous situation for the research laboratory to be attacked by drones after the resurrection of the reading strip, then the first attack on the arsenal undoubtedly made the already dangerous situation even worse, and without weapons, Jekyll would not be able to fight these war machines, and even worse, after the invasion of the drone swarm, they first occupied the major entrances and exits, and also controlled the elevator system, which almost sealed Jekyll's course of action.

There has to be a way out of this predicament! Once captured by the drone swarm and Dr. Hyde, they won't give me a chance to kill myself and read the note to resurrect

Jekyll's mind raced, and he walked through the cookie-patterned corridor, and when he was about to come to the corner, the roar of the engine from the other end made him suddenly stop his steps, and the excellent reflexes he had trained through death again and again made him immediately make the best choice for the current situation and pressed his body against the wall, and then almost at the same time a land machine slowly drove out of the corner.

The moment it appeared, Jekyll held his breath, his body tensed unconsciously, his back pressed against the cold alloy wall, and he didn't dare to make a sound.

Don't look at the other party's only one land machine, but Jekyll didn't dare to act rashly.

Unless it's the kind of superman who can tear steel with his hands, it is impossible for a normal person to beat a land-based machine without weapons. These land-based machines equipped with self-aiming systems can quickly complete the aiming of the target and the fine-tuning of the muzzle within a few tenths of a second without any disturbance, so as to achieve high-precision shooting of headshots from which gun to shoot.

And all machines are under the unified dispatch of Sibila

As soon as a land-based machine discovers his tracks, then countless drones will immediately swarm you

So Jekyll could only remain quiet and cautious, praying that it would leave here as soon as possible.

However, the land-traveling machine apparently had its own agenda, and when it came to a sudden stop in the middle of the intersection, Jekyll felt his heart beat almost come to a standstill.

The long box-like surveillance camera deflected to the left, and with the crisp friction sound between the machines, it looked into the left passage, and after the direct observation of the optical lens, as well as the observations of several different pointing detection devices, the land machine finally came to the conclusion that it had not found the target until the end of the passage, and then the land machine with the camera back to the center slowly drove forward again.

Damn, I didn't think that the robot was also an interstellar player.

Seeing it gradually moving away, Jekyll also breathed a sigh of relief, and even secretly joked about this land-traveling machine in his heart.

But at this moment, the land traveling machine that was originally moving suddenly stopped the advancing track, and the box-shaped surveillance camera on its head turned one hundred and eighty degrees, and looked at Jekyll who was sticking to the wall, and emitted an electronic synthesized sound that seemed to have a slight mockery, but without the slightest emotional fluctuation.

Vital signs are detected and targets are found.

Damn it! Tricked by a machine!

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