"Attention all troops, zombies have rockets, be careful to take precautions!"

Chen Yuan's behavior of wrapping the rocket with an ice-based ability did not prevent the explosion of the rocket as expected, but it made the explosion of the rocket much less powerful, and therefore did not cause casualties or the collapse of the passage.

As soon as the explosion passed, Chen Yuan, who couldn't help but breathe a sigh of relief, immediately used a walkie-talkie to notify all the troops who were fighting. Since there is such a thing among the zombies, there will definitely not be only 5 of them!

In addition, after more than 10 days of running-in, all units are now equipped with walkie-talkies of the self-help forces at least at the commander level, so as to facilitate unified communication.

However, Chen Yuan's reminder seems to be a little late.

As soon as his words fell, reports of other troops being attacked by zombie rockets had already come one after another.

"Report, this is Tunnel 3, we were attacked by zombie rockets, and more than a dozen people were injured. Due to the complete collapse of the passage, it is currently impossible to continue attacking the zombies behind! ”

"Report, this is Tunnel 5, we ......"

Obviously, it was not only Chen Yuan who was attacked by zombie rockets at the same time, and the No. 1 tunnel where they were located.

Some of the holes collapsed completely, and many people were injured, while others were fine.

Chen Yuan felt that he couldn't wait any longer, so he immediately ordered: "Start a counterattack immediately, don't let the zombies pick up the bazooka and continue to attack!" ”

"Roger! Start the counteroffensive! ”

Thus, the human counterattack began.

Suddenly, the attacking zombies only felt that the firepower of the human troops in front of them suddenly became denser, and the overwhelming bullets flew towards them. It was like splashing water.

Although the zombies have solid armor on their bodies, they may be fine if they take a few bullets.

It is precisely because of this that although the firepower that is not weak in the face of humans before, it can still advance little by little.

But now, in the face of more intense fire, their armor was shattered almost instantly.

At the same time, he can take more than a dozen guns on his body, where is there a way to live!

Even the mutants among the zombies are feeling a little struggling.

Their defensive shields are being hit by hundreds of bullets every moment, and you can't stand such a dense steel plate!

In such a situation, there are no zombies that can pick up those dropped bazookas. As soon as a zombie approaches the location of the bazooka, it will immediately be hit by the most intensive fire.

In an instant, it was beaten into a pile of rotten meat.

The zombie front also began to slowly compress backwards.

And, soon, the zombies also saw a terrifying weapon in the narrow passage - the flamethrower.

In some tunnels, zombies have mutant zombies pressing the array, so it's better.

For example, here in Tunnel 1, because there is a fire mutant zombie.

As soon as the flames erupted from the flamethrower, they were controlled by the fire mutant zombies and fought back.

And the fire-based abilities on the human side also immediately exerted their strength.

So for a while, the battle became a contest between the human fire ability and the zombie fire mutant.

There are also two other tunnels, because of the existence of water mutants and ice mutants, they can barely resist.

But now, there are only 16 zombie mutants in total. There are only a few zombie tunnels that can be divided into mutant zombie suppression arrays.

The zombies in the other tunnels weren't so lucky.

Flamethrower attacks are very deadly in small passages.

In the face of the fierce flames rolling in, a large number of zombies with nowhere to escape were ignited in an instant. Thousands, thousands were burned to death.

The Corpse King was shocked.

And at this time, the fire mutant zombies on the side of Tunnel 1 don't seem to be having a good time.

Because on the human side, there is Jiang Wenli and another fire-based ability.

Just one Jiang Wenli, the strength of the ability is almost the same as the fire mutant on the zombie side.

Coupled with another human fire-type ability, the fire-type mutant zombies are of course gradually becoming unable to resist.

The raging fire also began to gradually advance towards the zombies.

How could the corpse king not be in a hurry.

This side of tunnel 1 is the most promising position for them to successfully break through at the moment. If this place is also attacked by human flames, there really will be nowhere for them to break through.

At this time, it finally realized that it seemed that it was not so easy to attack underground. This human castle is also different from the other human strongholds he has encountered before, it is really impregnable! It's a little regretful that it's attacking the Iron Keep.

At the same time, the Corpse King is also beginning to consider whether to give up the attack. Because at this time, there are really not many zombie legions under its command!

Soon, however, things took a turn for the better.

Because Chen Yuan, they ignored a problem at this time! And it's a very serious problem.

That's oxygen!

The burning of the flame will consume a large amount of oxygen in the tunnel.

Although there are special ventilation ducts here.

However, with so many fires burning at once, the ventilation pipes exchange air with the outside world, which is completely unable to meet the burning of the flames here.

So soon, someone on the human side noticed that the fire on the zombies on the opposite side was gradually extinguishing itself.

And inside the tunnel, it also began to become thick and full of pungent smell.

It's the same in Tunnel 1, the flames of the fire mutant zombies on both sides of the middle are slowly extinguishing, and some warriors' minds are starting to become a little groggy, and their firepower is beginning to weaken.

Chen Yuan was shocked, instantly understood the problem, and hurriedly shouted: "Stop using the flamethrower, the carbon dioxide concentration is too high!" ”

The Corpse King was overjoyed, because even if there was no oxygen at all, their zombies would not be affected.

So under the control of the Corpse King, the zombie army stepped up the offensive.

Chen Yuan shouted again: "Brother Xiao, use the wind ability and draw air from the outside!" ”

Because of the decrease in oxygen, many fighters have developed a state of hypoxia.

But fortunately, there is Xiao Tengcan, a wind powerhouse, otherwise they won't be able to find a blower for a while, so they can only retreat.

So with the help of Xiao Tengcan's ability, the lack of oxygen of the soldiers here quickly recovered, and the defense line finally stabilized again.

But other places that don't have wind abilities aren't good.

In the face of the surging attack of the zombies, the human defenders affected by the lack of oxygen can only retreat. It's slightly better to retreat until there's plenty of oxygen.

But in the process of a hasty retreat, casualties were inevitable.

However, because of this, the zombie army missed a good opportunity to retreat.

Therefore, because the accident caused by the flamethrower is a blessing or a curse, it is actually impossible to generalize at present.

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(End of chapter)