6 hours later, Mountain City.

Chen Jian closely watches the emptied elevated bridge below, his gun pointed at the entrance to the underground city.

Above him, two newly arrived transport aircraft emit a low hum, alongside them is an aircraft equipped with a nuclear bomb, ready at any moment to use the bomb for a comprehensive electromagnetic bombing.

This is the only cover for the transport aircraft, and it can be said, the only cover for Chen Jian and others waiting for support below.

Exhaling slightly, Chen Jian begins to speak:

"Keep a close eye on the situation at the entrance of the underground passage."

"In 5 minutes, the transport aircraft will commence landing operations."

"This is the enemy's best window to launch an attack. If they have basic military command capabilities, they will definitely not miss this opportunity."

"Make full use of the terrain to seal them outside the defense zone."

"Otherwise, once the enemy gets close, dealing with them will be quite difficult."

"Everyone, stay alert."

"Check equipment!"

"Equipment check complete."

Ji Xing's voice comes through the radio.

"Drone surveillance ongoing, everything is normal for now."

"Understood."

Chen Jian responds briefly, and immediately the others report the situation of their positions.

"This is Liu Hao, heavy machine gun position ready."

"Zhang Chao here, I'm ready."

"This is Guo Xu, I'm in position."

"Captain, I'm ready."

A series of responses come through, and Chen Jian replies in turn, then looks at the map marked on his smart visor showing the locations of friendly forces.

Now, the 6-man squad has been dispersed by him to six different positions.

With reasonable allocation of firepower, it's possible to control the entire runway with just six people.

But the risk of doing this is also very high.

The six positions cannot cover each other. If one position is breached, the entire defense line could collapse like an avalanche.

But Chen Jian has no other choice.

He must take some risk to achieve greater results.

At this moment, the transport aircraft in the air has already begun descending in circles, Chen Jian glances at his watch, just three minutes left until the scheduled landing time.

If those Mountain City People want to launch an attack, this is their final chance.

He vigilantly scans all suspicious shelters within his firing range, and just then, gunfire suddenly erupts!

"Bang bang bang bang bang----"

Chen Jian's heart leaps sharply.

He looks at his smart visor, and the green dot representing Li Shi has already turned into a triangle indicating "crossfire."

"The enemy is here!"

Li Shi's voice comes through the radio, and Chen Jian immediately orders:

"Deploy the drone to assist Li Shi's position!"

"Understood!"

As soon as the words are spoken, Ji Xing promptly maneuvers two Turtle Drones for reconnaissance and combat toward Li Shi's direction.

Moments later, the 8.6mm machine guns carried by the drones open fire, and through the drone's perspective, Chen Jian clearly sees the enemy flowing out from the underground passage.

It's still those Mountain City People wearing flexible armor and full-face helmets.

But this time, they seem ready for "sacrifice!"

Bravely facing the heavy machine gun fire from Li Shi, two Mountain City People quickly move forward to deploy heavy bulletproof shields, one of them takes a hit from a 12.7mm bullet on the shoulder, instantly tearing off the entire arm.

Yet even so, he persists in lunging to the side of the exit, fully raising the shield.

In an instant, with the aid of the electric drive mechanism, the shield rises abruptly.

The entire passage is almost sealed off, while the 12.7mm bullets hitting the shield only produce a series of sparks!

The confrontation begins at this moment.

"Breaching round!"

Chen Jian shouts the order.

Li Shi immediately releases the trigger of the heavy machine gun.

He then grabs the recoilless rifle beside him, takes a brief aim.

At a distance of less than 300 meters, direct hit!

"Boom!"

A massive explosion occurs, under strong impact, the shield made of composite materials is pierced instantly!

Shrapnel sweeps across an entire area behind the shield, through the drone's perspective, Chen Jian clearly sees some Mountain City People being thrown by the shockwave, and the high-speed shrapnel directly embed into their armor.

Although it doesn't penetrate, the strength of this overpressure is undoubtedly something the flesh can't withstand.

"Second round!"

Chen Jian continues to order, and simultaneously as he speaks, on Li Shi's side, the second breaching round is already fired.

"Boom!"

Another loud explosion, the shield that had just been erected is directly flipped over onto the ground.

The Mountain City People, now without cover, swiftly retreat, but Li Shi has already switched back to the heavy machine gun.

12.7mm incendiary rounds snake through like long serpents, two Mountain City People are hit, bullets instantly burst into blood on their backs.

Casualties caused!

Chen Jian's eyes light up.

But immediately, he can't help but feel puzzled.

What kind of joke is this?

The tactics of these Mountain City People are way too crude, aren't they?

They clearly have plenty of unmanned machinery, why are they using flesh and blood to charge through heavy fire?

Where are those consumables?

And just as the thought flashes, on the other side, Liu Hao has already opened fire.

The gunfire from the heavy machine gun tears through the Mountain City's dusk like ripping cloth, under the cover of gunfire, from time to time, huge explosions are heard from afar.

Unmanned combat units.

Indeed, they have arrived!

The drones from the Mountain City's underground flew out like swarms, heading straight for Liu Hao's location.

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