In addition to this giant bird, the other flying monsters also swooped down, using all means to get into the star engine and kill the crowd.

However, most of them were wiped out by the anti-aircraft fire of the Wandering Earth Expeditionary Force in the process of approaching, leaving only one corpse to crash into the planetary engine under the action of inertia.

Even if a giant bird was lucky enough to get to the soldiers of the expeditionary force through the dense network of anti-aircraft fire, it would only be able to leave a few claw marks on the shell of the planetary engine, or destroy a few cannons.

It's just that their corpses did cause some trouble for the expeditionary force, and these huge flying monsters relied on their own weight to hit the planetary engine, not only successfully crashing into some of the fortifications, but also blocking the muzzles of the cannons, causing several huge cannons to be fired temporarily.

It could be said that they were the kamikaze of the pioneer civilizations, relying on suicide attacks to weaken the defenses of planetary engine fortresses.

It has to be said that the purpose of this suicide team has indeed been achieved, due to their unremitting interference, the ground fire of the planetary engine fortress briefly appeared a small gap, allowing the giant beast troops led by Ghidorah to close the distance at once.

These alien monsters' weapons are much more than just fangs and claws, and once they are within range, their biochemical weapons begin to display terrifying destructive power.

First, a dozen monsters that looked like giant toads began to bulge their bellies, and then a viscous acid cannonball was sprayed into the air.

This acid is similar to the highly corrosive acid spit out by the tailed standing rat, but the difference is that the acid emitted by this monster is more viscous, like a mouthful of thick phlegm, which crosses a parabola in the air before landing on the planetary engine.

"Lie down!"

An acid cannonball landed right next to Wang Lei, and it was like a water balloon that exploded, instantly spilling a large amount of acid onto the shell of the planetary engine.

The area touched by the acid immediately corroded to the point that it was sizzling, emitting a thick white smoke and an extremely unpleasant smell.

All the metal was melted into a puddle of muddy pus in an instant, and the planetary engine's outer shell was deeply corroded into it, leaving a gap that was still bleeding pus.

The corroded floor came all the way to Wang Lei's feet, if they hadn't evacuated in time just now, it is estimated that even he would have corroded into such a disgusting pus.

The long-range attack capabilities of these monsters should not be underestimated, and sure enough, those flying monsters carried out this kind of suicide attack to cover them.

The second group of monsters that carry out long-range attacks is a group of fourth-level monsters codenamed "Shrike Thorn".

The monster was covered in razor-sharp spines, and when it got close to a certain distance under the cover of acid shells from behind, it began to fire these spines like machine guns from its mace-like tail.

Each spine was embedded deep into the outer shell of the planetary engine like an armor-piercing bullet, leaving a large number of holes in the engine in an instant, as if it were filled with toothpicks.

It's just that each of these "toothpicks" is at least five or six meters long and more than one meter thick, and once hit, it will be the end of the broken bones, even if it is protected by a steel suit, it cannot withstand such a terrible impact.

The division of labor between the two long-range monsters is fairly clear, with the acid toad being responsible for corroding away the solid planetary engine shell, and the shrike strafing the corroded parts of the shell, allowing the spines to penetrate as deep into the planetary engine as possible, causing more casualties and equipment damage.

The commander of the expeditionary force, Zhang Zhezhong, immediately reacted: "Priority shoot the enemy's long-range troops!" Don't waste too much firepower on those small creatures! ”

The Planetary Engine Fortress immediately concentrated its firepower to kill these long-range monsters, after all, in terms of firepower, the Wandering Earth has never been left behind.

Hundreds of cannons bombarded the acid toads and shrike in turn, and they were suppressed by more firepower than they could no longer shoot.

However, at the same time, a large number of small symbiotes poured up like a tide, taking advantage of the Wandering Earth Expeditionary Force to concentrate their firepower on the long-range troops, and landed on the main island of Hawaii in one go, and split into three torrents to rush towards the planetary engines, the Kilauea Crater and the Mauna Loa Crater.

"They're trying to get into the crater!" Wang Lei, who saw this scene from a high place, hurriedly reported to Zhang Zhezhong, "According to Qiao Lu, once they are allowed to pour into the crater in large numbers, then the environment of this planet will be finished!" ”

"Do you rely on this to force us to disperse our firepower?"

Zhang Zhezhong immediately realized the intentions of the pioneer civilization, but they really had to stop it.

"Allocate part of the long-range fire to support the defensive forces of the two craters, and never let the other side pass through the volcanic defense line!"

The Wandering Earth Expeditionary Force has also sent mobile units to protect the two craters on the main island of Hawaii, but without the fire support of the planetary engine fortress, it is still unknown whether they can hold these two craters.

After redistributing firepower, the ranged monsters of the pioneer civilization regained a little respite, using acid and spines to bombard the planetary engines from distant islands.

Although their attacks were still only a small amount of damage compared to the huge planetary engines, since the opponents also had long-range attack methods, the soldiers of the Wandering Earth Expeditionary Force had to be more careful to deal with them, after all, they were not as stable as the planetary engines.

At this time, Ghidorah, another level 6 monster, had also landed on the main island of Hawaii, only to see its three heads like a hydra raised high, and in one breath it spewed out three rays of thermal energy like thunder across the base of the planetary engine, instantly tearing out three rifts tens of meters wide on it.

The tidal wave of symbiote monsters rushed through the gap into the planetary engine, engaging the expeditionary soldiers who were responsible for defending it inside.

More deep-sea behemoths followed Quito** on the main island of Hawaii, and like the small symbiotes, they were divided into three batches of direct planetary engines, as well as two craters on the island of Hawaii.

The war had entered a white-hot stage, and at this time, the storm red party piloted by Qiao's law firm was belatedly approached by several carrier helicopters, and gradually approached the sky over this fierce battlefield.