"Dada......"

Wang Wuyun operated the heavy machine gun in front of him, and fired fiercely at the man-eating insects in the valley below the firing port.

The place where he and Xue Qianyan were stationed under the cave was the No. 164 bunker in the No. 7 fortress cave.

Bunker 164 is located at the highest position of the underground fortification group of Fortress 7, below and directly opposite the bunker, directly facing the huge underground cavern, a wide underground rock gap extends out of the cave, directly to the bottom of Bunker 164, forming a gap, which is the main attack route of those zerg in the underground cavern.

Guarding here like nails along with Bunker 164 is the dozens of bunker fortifications on the rock walls and hillsides on both sides, which are connected by secret tunnels, and if those zergs break through the underground fortifications, they will be able to rush from the ground to the ground, which also means the fall of Fort Seven.

Compared to the ground, the underground cave is the main direction of attack of the Zerg.

Because those zergs know that many heavy weapons and strike forces used on the ground, such as human planes and armored vehicles, cannot be moved to the caves.

Even if he didn't use night vision equipment, Wang Wuyun's naked eyes could still see those disgusting man-eating insects thousands of kilometers away, and the bullets flying from the muzzle of the heavy machine gun in front of him were more accurate and sharp than the bullets fired from any of the surrounding pillboxes.

If you look at it from the air, the entire Man-eating Insect Army directly opposite the No. 164 Bunker, compared with the surrounding bunkers, was directly dented by Wang Wuyun, and it was difficult to take a step beyond the Thunder Pool.

The heavy machine gun uses No. 3 bullets, the standard of No. 3 bullets is close to 12.7 mm caliber machine gun bullets, at a distance of one thousand meters, the bullet that shoots out can often penetrate the bodies of two man-eating insects, tearing the bodies of the man-eating insects to pieces, which is very powerful.

Now is not the time for Xue Qianyan to fight, Xue Qianyan was watching Wang Wuyun manipulate the heavy machine gun in front of him without distraction, sweat fell from Wang Wuyan's forehead drop by drop, the bullet shell of the heavy machine gun was like a flowing bright yellow waterfall, flying down from Wang Wuyan's side, Wang Wuyan's whole body trembled with the tongue of fire spit out by the heavy machine gun, but his hand holding the gun was as firm as an iron tong.

I have to admit that men who devote themselves to the battle have a special charm.

In just ten minutes, the barrel of the heavy machine gun had turned red, and a layer of bullet casings had accumulated on the ground under Wang Wuyun's feet.

With Xue Qianyan watching Wang Wuyun on the side, there were also two sub-shooters in Bunker 164.

The two assistant shooters are both young people in their twenties, about the same age as Wang Wuyun on the surface, one is surnamed Yu, called Yu Guitian, and the other is surnamed Ma, called Ma Yang, they worship Wang Wuyun very much, and the two of them even have to pass Wang Wuyun's signature.

While Wang Wuyun was in charge of the main heavy machine gun in the bunker, Yu Guitian and Ma Yang were next to him to undertake auxiliary tasks.

Through the perforation of the bunker, watching the tongue of fire spit out from the machine gun of the No. 164 bunker to dent the formation of the man-eating insects in the cave, the two sub-shooters looked at Wang Wuyun with awe-inspiring eyes, the spear god is the spear god, it's too good......

Feeling that the red barrel had affected the trajectory and accuracy of the bullet, Wang Wuyun immediately stopped shooting.

"Replace the barrel...... Snap the chain ......"

Hearing Wang Wuyun's order, Yu Guitian, who had already held the tools, immediately rushed over, quickly removed the reddened barrel of the heavy machine gun, put it in the water next to it to cool, and replaced the heavy machine gun with a new barrel, while Ma Yang rushed to the automatic ammunition supply box next to the heavy machine gun, opened the box, and connected the new bullet chain.

In less than thirty seconds, the heavy machine gun controlled by Wang Wuyun spat out tongues of fire again.

Today's man-eating insects are like crazy, they don't care about casualties at all, they don't retreat, they just rush forward desperately.

And behind those man-eating insects, the huge figure of the knife beetle began to appear, and the man-eating insects rushing in front of it were like thundering for the knife beetle.

One by one, the mines buried outside the bunker were detonated, and the man-eating insects came out of the dark corners and crevices deep in the cavern, approaching the defensive line of the bunker from all directions.

Wang Wuyun's formation of dented man-eating insects did not last long, because the man-eating insects that came from both sides quickly made up for the depression.

And the thick shell of the knife beetle is almost like a thick layer of steel plates, and the bullets of ordinary heavy machine guns cannot penetrate it at all.

Countless bullets rained down, blood rushed forward, and the entire cavern was littered with the severed limbs of man-eating insects, and the sound of gunfire mingled with the screams and hiss of man-eating insects, piercing the eardrums......

A large area of man-eating insects, from a place thousands of kilometers away from the bunkers, in just half an hour, has been blocked by countless firepower, close to the bunker within 50 meters, and the man-eating insect behind the knife beetle is even closer to within 100 meters, the huge body of the knife beetle, to everyone in the bunker brought huge pressure, there are constantly bullets on the body of the knife beetle, sparks flying.

The barrel of the heavy machine gun controlled by Wang Wuyun had been replaced three times, and the bullet casings thrown from his feet could no longer reach the instep, but even so, it still couldn't stop those man-eating insects from rushing to the bunker.

Outside the bunker, there is a one-meter-thick protective layer of reinforced water concrete, as well as steel plates, and man-eating insects can't get through.

"Flame gun ......," Wang Wuyun shouted.

Almost as soon as Wang Wuyun shouted out, the flame shootouts of countless bunkers opened one after another, and streams of flames erupted out, directly turning the area of fifty meters outside the bunker into a sea of fire.

Yu Guitian and Ma Yang controlled the two flame guns inside the bunker and sprayed violently at the outside of the bunker.

Flames of nearly 500 degrees Celsius erupted, over the dry ground, and sprayed on the bodies of the man-eating insects that rushed towards them, turning the man-eating insects that rushed in front of the fortress into flaming fireballs.

The man-eating insects that rushed here hissed and rolled in the sea of fire, but there were still man-eating insects rushing towards the bunker.

Two flame guns fanned across everything in front of the fortress, and the boiling heat poured directly from the holes, carrying a suffocating current of heat and the scorched smell of the man-eating insects.

The man-eating insects that had been on fire all the time rushed directly in front of Wang Wuyun's perforation, wanting to bite the barrel inside the perforation.

Wang Wuyun just gently pulled the trigger, and the body of the man-eating insect was torn apart by the bullet and rolled down.

"Air energy bombs are being prepared...... Air energy bomb preparation...... Please be prepared for shocks...... Please be prepared for shocks...... The countdown to the drop of the air bomb begins......"

On the radio of the bunker, a voice instantly sounded.

"Thirty ...... Twenty-nine...... Twenty-Eight......"

Hearing the sound and starting to count down, Wang Wuyun, Yu Guitian, and Ma Yang in the No. 164 bunker, without thinking about it, pulled a handle in front of their own shot, and a movable steel plate nearly half a foot thick slid over from the side, and with a click, the perforation was closed.

"Twenty ...... Nineteen...... Eighteen ......"

In the bunker, Xue Qianyan, Wang Wuyan, and Yu returned to the field, and Ma Yang put on an oxygen breathing mask in the bunker at the same time.

The man-eating insects had already rushed through the flames to the outskirts of the bunker, and with their claws they struck the perforated protective steel plates as loud as a sound......

"Three...... Two...... One ......"

There was a thunderclap in the cave, and then the whole ground began to tremble, like an earthquake, and Wang Wuyun and the others hid in the strong bunkers and fortifications, and they all felt like they were sitting on a bumpy ship, and the dust and sand above the strong bunkers were falling in a flutter.

In the huge cave outside the bunker, it seems that a tornado blows all of a sudden, and it seems that a train rumbles over on the ground outside the bunker, countless man-eating insects are howling, and the air inside the fortress, through the gap in the perforated isolation window, is rapidly pulling out, making a sharp hissing sound similar to a steam pressure cooker, and in just a few seconds, the temperature in the entire bunker begins to rise, just like being in a sauna, it begins to become hot......

The air energy bomb on the mud Lu star is similar to the cloudburst bomb on the earth, it does not use explosives, but a high-energy air deflagration agent mixed with metallic hydrogen, which is more terrifying than the cloudburst bomb on the earth, which is the most terrifying weapon except for nuclear weapons......