"Pap, papa, papa, pap", with the appearance of Yan Yeyang's assault team, layers of lights on the cave wall on the opposite side lit up, and this huge underground space was suddenly illuminated.

It felt like a landing mothership, Yan Yeyang's team drilled into the dense holes on this side, and then with a "buzz", a large number of artillery pieces stretched out from those holes.

Looking at this dense forest-like cannon barrel, the invisible Galaxy team was also terrified, under the cover of this density of artillery fire, what kind of damage should this first wave of bugs suffer?

Just like the rising tide, Yan Yeyang's team had not long escaped into the position, and there was a "buzzing" sound from the wall on the other side, and this sound was close to the hollow.

The sound of "poof, poof" continued, and the wall of the cave on that side seemed to be shattered, and a large number of spherical things broke through the hole and sprayed into the air.

The size of these "stone balls" is far larger than that of ordinary aliens, and their outer areas are covered with layered armor, and the "stone balls" continue to roll in mid-air, and in the blink of an eye, they shoot into the center of the hollow.

"Fire!"

With an order, the stone wall on this side of the expeditionary force was "on fire" at the same time, and the dense firepower met the "stone ball", and then the "flowers" bloomed in the air.

However, the result of the bombing was a great surprise to humans, under such violent firepower, those "stone balls" were actually unharmed, except for the explosion of its shell, the "stone balls" did not suffer any injuries.

Blocked by the artillery fire, the "stone balls" lost their momentum and fell to the ground, and then they were seen to stretch out, revealing the six limbs of the insects from under the thick armor, and these "stone balls" began to rush towards the human side under the artillery fire.

"What is this? Why can't you beat it? ”

Seeing these spheres getting closer and closer, Yan Yeyang was shocked. There is still an alien with such outstanding defensive ability, how can this battle be fought?

"With crystal cannons, all crystal cannons are dedicated to attacking this alien, which is the 'rock', the top defense in the alien."

Zhang Binhui's voice sounded in mid-air, and the soldiers of the expeditionary force suddenly realized, so the few crystal cannons on the cave wall shifted their direction, and they all aimed at the "rock" alien.

With a "hiss", different results immediately came out.

A beam of blue light blasted into a rolling "rock" alien, and I saw it tremble, and the direction it was moving immediately became disordered.

Accompanied by a pillar of blood, a puff of stone flowers splashed under the body of the "rock" alien, and when it rolled to the front, it saw a deep hole left in the ground.

Gurgling blood flowed down the holes that ran through its body, and the "rock" alien spread out its body, lying on the ground and dying on the ground, it could no longer move forward for half a minute.

This must be the main force of the aliens, and more "rock" aliens erupted from the stone walls on the opposite side.

With a "poof", a beam of blue light shot at an alien in mid-air, and along its rolling body, the crystal cannon was like peeling an orange, cutting a circle along the alien.

After the "hiss" sound, the huge alien body of the "rock" split into two pieces in mid-air, and the two semicircles were connected with blood and white flesh, and wisps of pasty liquid were thrown out along the inertia.

I heard a "clang", and the alien that had been cut in half slammed into the mountain on this side, and after the "bang" sound, a large piece of rock collapsed, and several cannons on it fell into the hole.

Just as the "rock" alien is the vanguard of hail, the insect tide that follows is the torrent of strands.

In the sound of "poof, poof", hundreds of insect **** formed by knife insects shot into the air, and they poured towards the other side of the cave wall like a pillar of smoke.

"Fire, no matter the target, regardless of the ammunition, give me a shot to the death!"

Crystal cannons, artillery, mechas, and all the weapons that humans can use roared, and you don't have to worry about the destruction of the cave by cannonballs at all, the number of aliens is too large, and these firepower are basically poured on them.

As if dissolving, the dense firepower collided with the insect tide, so that the two torrents that collided with each other collapsed, and the alien corpses and fragments of the cannonballs scattered in all directions, and the air of the cavern was immediately completely covered by the surging steam wave.

"Load", Yan Keshuang roared, and the track behind the gun mount immediately heard a "sonorous" sound.

The loss of the mecha made Yan Keshuang very unhappy, he drove away the gunner, sat on the gun mount himself, and with the feeling of the trigger being empty, the thousand rounds of shells were instantly poured out by him.

The expeditionary force was very efficient in setting up a supply system here, and the second box of shells was quickly installed on the cannon, and Yan Keshuang's cannon roared again.

Under the dense fire net, the losses of the aliens in the early stage were extremely heavy, but they had long been accustomed to this style of play, and when more bugs escaped from the ground, the firepower of the expeditionary force had to be dispersed.

"Poof", a alien opened its six legs and climbed directly on top of the hole like a bottle cap, and Yan Yeyang's vision was suddenly blocked.

"Die!"

Yan Yeyang roared, pressed the hot barrel against the mouthparts of the alien's abdomen, and then fired directly.

"Kow, Kow", a series of cannonballs broke through the jaws of the alien and then burrowed into its body.

The xenomorph trembled and was pushed into the air like a swing, sparks flashing in its belly, and then it swirled and fell into the bottom of the cavern.

More bugs swooped down on the cave wall on this side, either blasted back by artillery fire or struggling to burrow into the rock.

Most of the bugs were blown to pieces, but there were also human artillery pieces that were pulled out by them, and the expeditionary force's defenses were in jeopardy.

"Retreat, thirty meters!"

A command came from the PA system, and all the cannons activated themselves, retreating thirty meters into the depths of the hole.

The space left behind was immediately filled with aliens, and they burrowed into the cavern.

It was at this time that the unexpected happened.

Dense nets of light flashed from the walls of the cave, intersecting and connecting to form a large network that covered the entire interior of the stone wall.

When a large number of aliens drilled in, the light net began to shrink.

The dense "crackling" sound kept coming, it was the scream of chopping bones and flesh, and a "snap" sound was heard, and the whole piece of rock on this side of the expeditionary force's defense line, covering an area of millions of square meters, was completely cut by the light net.