With Ling Feng's order, fifteen combat detachments composed of fifteen seventh-generation mechas, each carrying seventy sets of individual cloud burst bombs, scattered in the huge karst cave.

At this time, Ling Feng led dozens of robots to stay in the core area of the cave, quietly waiting for the search results of each detachment.

After waiting for less than an hour, there was a sudden rumbling vibration in the entire cave.

Although Ling Feng was sitting in the cockpit of the mecha and couldn't hear the sound outside, he could clearly feel the constant vibration under his feet.

At this time, he clearly understood that it must be those robot detachments scattered in the cave, and at this moment they were using individual cloud burst bombs to bomb and clean up various hidden and narrow places in the cave.

Within the first few minutes, the vibration in the cave was still not particularly obvious, and as time slowly passed, there were violent vibrations around the cave.

It seems that all the mecha combat detachments are starting to use individual cloud burst shells.

Under such circumstances, in half an hour at most, thousands of sets of individual cloud burst bombs will be fired by these robots, and at that time, those mutants and monsters hiding in the hole, they should be forced out.

Sure enough, it didn't take long for several mecha detachments to search in the depths of the cave, and they found traces of the enemy one after another.

"Sir, we found several monsters covered in pitch black in a crack deep in the cave. These monsters have fled to other places under our attack! ”

Hearing this, Ling Feng's spirit was shocked, and he hurriedly said, "Track them down at all costs and kill them as much as possible!" ”

"Yes, sir! We've just used exploding armor-piercing rounds to attack them, but the places where they're hiding are too narrow and crooked for the mechs to enter, and the armor-piercing rounds haven't hit their targets. Several ninth-generation robots operating mechs responded at the same time.

Ling Feng's heart sank. "I see." Where are they fleeing now? What is the quantity? ”

The robot quickly responded, "There should be more than five of them, and they seem to be fleeing in the direction of the cave entrance!" ”

"Cave entrance!"

Ling Feng's face sank slightly, and he hurriedly drove the mecha towards the outside of the cave.

Because, where he is now. It is the only way to get to the entrance of the cave. He didn't want to encounter those fleeing monsters here. You know, the mecha he piloted was just on the top of the mountain. All weapons and ammunition have been used to bomb alien flying objects.

Once he encounters those fleeing monsters, it is estimated that the mecha will not be able to effectively stop them, and he does not believe that with only the two combat knives of the mecha, he can kill all those monsters that can shoot dark rays.

Now, he has to rush to the outside of the cave entrance immediately, where he will deploy weapon fire, and as long as there are monsters in the cave, he will definitely order all the robots to concentrate their fire to kill them.

Thinking of this, Ling Feng quickly drove the mecha out of the cave.

In the process of exiting the cave, he quickly gave orders to the other mecha combat detachments, instructing them to pay close attention to their surroundings, and if they found any monsters coming out of the cave, they must be intercepted and killed in time!

A moment later, Ling Feng returned to the ground, and at this time, there were still more than 20,000 eighth-generation robots guarding the outside of the cave entrance.

At that moment, Ling Feng ordered those robots, all of which were prepared with all kinds of heavy machine guns, bazookas, and other weapons and ammunition, to aim at the entrance of the cave, as long as there were suspicious creatures that came out of the cave, they would definitely be beaten into a hornet's nest at the first time.

Standing outside the cave and waiting for half an hour, Ling Feng didn't see a monster coming out of the cave, which made him feel a lot more relaxed.

However, the movement in the cave was quite noisy, and there were all kinds of explosions of fierce fire everywhere, although standing at the foot of the mountain, Ling Feng and they could all feel that the ground under their feet was constantly shaking one after another.

Then, in just half an hour, Ling Feng's mind sounded several system reward prompts: "Congratulations to the chief for successfully eliminating a dark warrior, so the system will give you a special flop reward, do you want to accept the reward?" ”

"Congratulations to the chief for successfully killing five Dark Warriors, so the system will give you five ......"

As the reward prompt continued to sound in his mind, Ling Feng was not only excited, but also secretly counted the number of dark warriors that had been eliminated, so far, those robots and mechas, in the cave, a total of forty-two dark warriors had been eliminated.

Obviously, the battle plan I just made was very effective.

First, use a large number of individual cloud burst shells to force out all the monsters hiding in the shadows, and then let the mechs use burst armor-piercing shells to lock them and attack them.

In this way, forty-two of the fifty monsters hiding in the cave have been killed, and it seems that this counterattack plan is quite successful.

Thinking of this, Ling Feng couldn't help but laugh.

However, according to the report of the robots in the cave just now, Ling Feng sent in the robots and mechas, and there were also varying degrees of losses.

Up to now, there are a total of twenty-three eighth-generation robots, which have been destroyed by the dark rays emitted by those monsters, and there are two seventh-generation mechas, which have been seriously damaged, however, the mecha is relatively large in size, and the defense is also relatively thick, so as long as they exit the cave, Ling Feng can still spend 10,000 honor achievement points to repair and restore them.

Anyway, Tarzan said that all mecha and robots, as long as there is no fatal damage, can generally be restored through repair, of course, different degrees of damage, the cost of repair is not the same.

The mecha is generally 10,000, and as for the robot, he has not repaired it yet, and it is not clear how much it will cost to repair the robot.

Through the descriptions of those robots just now, Ling Feng finally knew why those monsters were so powerful.

It turned out that the fifty monsters that didn't come out of the cave should be mature dark warriors, like the kind of mature dark warriors, all of them are more than three meters tall, and their appearance characteristics are almost the same as those pitch-black monsters they saw before.

However, these mature dark warriors are very fast, and the twelve slender fingers on their four arms, within each finger, can shoot out dark rays in an instant.

Mature dark warriors, the dark rays they emit are quite powerful, much more terrifying than the rays emitted by those immature dark warriors.

The fifty dark warriors hiding in the cave were killed by fifteen mecha combat detachments, and forty-two were killed, and at present, there are still eight mature dark warriors left, and they are missing.

Now, those mechs and robot combat detachments are searching for their traces in the cave. However, so far, these robots and mechas, except for the dozens of dark warriors encountered in the cave, like the snow-white dark insect emperor, have not been discovered at all.

The Dark Worm Emperor didn't actually hide in the cave, which gave Ling Feng a bit of a headache.

If the Dark Worm Emperor didn't stay in this lair cave, then where did it go?

Thinking of this, Ling Feng couldn't help but touch his forehead, feeling a little depressed.

However, at this moment, the robots who were searching for the remaining eight dark warriors in the cave reported in their minds: "Report sir, we have found traces of the remaining eight dark warriors, they have climbed into the top of the cave at this moment, and they will soon disappear, so now we suspect that there is an exit hidden at the top of the cave, and these eight dark warriors should want to escape through the exit at the top!" ”

Hearing this, Ling Feng's face changed, and he hurriedly ordered: "You teleport the specific location of their escape to all the robots, leaving a mecha combat team to guard the cave, and the other robots and mecha detachments all exit the cave!" (To be continued......)