This passage to the underground secret base is quite open, but Mu Chen does not plan to enter it by flying a fighter, after all, he does not know the environment inside, so it is more appropriate to use more flexible means.

Mu Chen and the others carried their flying backpacks and drilled through the "side door" made by the ground-drilling bomb, and a piercing alarm sounded in the passage.

"It seems that these rats know that we are in, and after a while, let go of their hands and feet, and I will kill these bastards who have eaten the hearts of bears and leopards!" Mu Chen said coldly.

The family has always been Mu Chen's counter-scale, when he was a child, he was able to work hard with others for his sister, and after so many years, this habit has been maintained and has never changed.

Yaoyao is his daughter, from the moment he saw the photo, Mu Chen directly classified Yaoyao into the ranks of "his own people", daring to threaten the safety of "his own people", then don't even think about dying!

The passage to the underground facilities is long and dark, but this is not a problem for the wolf girl, who has replaced the most advanced intelligent prosthetic limbs, and she already has the ability to deal with all the problems on the battlefield.

I saw that she took out a button-sized disc from her right arm, crushed it and threw it to her feet, and while the disc fell, a large amount of fine smoke and dust was released, which adsorbed on the four walls of the passage, and soon emitted a soft white light, illuminating the entire passage as if it were day.

This disc stores a large number of luminous particles inside, which have a strong adsorption capacity and can be adsorbed on the exterior of buildings or creatures for a long time, and the luminous particles can produce a continuous light of nearly 400 candelas (brightness units) when they come into contact with the air, which is already more than the brightness of LED displays, which will not stab the eyes and can completely illuminate the surrounding environment.

"There seems to be some mechanism in the passage, is there a way to get to the bottom quickly?" Mu Chen asked.

"Just hold me, this little thing won't bother me." The wolf girl said calmly.

Mu Chen put his arms around the wolf girl's neck, held her in his arms, and closed his own jetpack.

If you ask who Mu Chen's most trusted person is on the battlefield, this person must be a wolf girl, many times Mu Chen feels that the wolf girl is much more reliable than himself when fighting, at least more calm.

The wolf girl turned on the energy shield generators on the four intelligent prosthetic limbs, and a sturdy energy shield enveloped the bodies of the two, and the thickness of the shield reached a foot, which was almost able to withstand the attacks of two tomahawk-type particle beam cannons.

The two of them quickly flew towards the bottom of the passage, and the traps and weapon attacks along the way did not cause any damage to them at all, and the laser beams and bullets fired by these traps did not even consume much of the shield's energy, leaving some shock at most.

Soon the two of them came to the end of the passage, and at their feet was the underground secret base, but another alloy door stopped in front of them.

"Give me 30 seconds." The wolf girl turned her head and said to Mu Chen beside her.

"No problem!" Mu Chen immediately took out his weapon and stood on guard, in case he was affected by something while the wolf girl was working.

The wolf girl pressed her palm against the alloy door, and some liquid metal quickly flowed out of her palm, seeping through the gap, and the base members hiding behind the door suddenly heard a siren.

[Alert! Alert! Aisle 2

The entrance has been invaded, the alloy door is about to be destroyed, the alloy door is about to be destroyed! 】

It turned out that the liquid metal flowing out of the wolf girl's palm was actually countless miniature nanorobots, and after penetrating into the inside of the alloy door, the electronic components and wiring inside were quickly destroyed.

In just 30 seconds, this alloy door that can resist the attack of nuclear bombs was broken, and the nanobot even controlled the alloy door to open automatically, welcoming Mu Chen and the others in.

As soon as Mu Chen walked into this secret base, he smelled a strong smell of blood, and the surrounding environment was very tidy, but many buildings had bullet holes or traces caused by cold weapons.

The interior of the base is very large, with tens of thousands of square meters, and these spaces are divided into many areas of different sizes, where children of different ages train non-stop in different areas.

This kind of training is extremely cruel, and the children of eight or nine years old are armed with weapons about the same height as themselves, and the older ones use firearms to fight until they kill their opponents.

Mu Chen saw with his own eyes a little girl who exchanged injuries for her life, although she killed her opponent in the battle, she was shot in the head by the instructor next to the training ground because she was stabbed in the abdomen by her opponent.

Seeing this scene, Mu Chen understood that this was a training ground for dark forces to train killers, and most of these children were lost children abducted by human traffickers, and perhaps some children from the slums.

And this kind of training, regardless of casualties, is going on all the time, but in the few minutes that Mu Chen watched, at least dozens of children died on various training grounds.

The winner, even if he had a slightly more serious injury, would have been mercilessly executed by the instructor, and there was no humanity at all.

Mu Chen is about to go crazy with these miscellaneous things, if Yaoyao has been living in this environment, I am afraid that he will also be trained into a killing machine with no personal emotions in the future, which he will never tolerate.

What's more, many of the children here are innocent, but they have been indoctrinated with heretical ideas since they were children, and there may be the possibility of salvation, no matter what, Mu Chen decided to completely destroy this place, and must not leave this group of people to poison the creatures, otherwise I am afraid it will cause extremely dangerous consequences.

"Those who dare to resist with weapons in hand are all executed, and not a single trainer and staff in the base are left!" Mu Chen coldly pulled out the weapon in his hand and explained the battle plan to the wolf girl.

The wolf girl nodded, her arms instantly popped out of the sharp arm knife, and a small hole appeared at the front of her fingers, which was the muzzle of the laser weapon, and she did not hesitate to send out lasers to the surrounding base guards.

Mu Chen was not idle, holding two laser pistols in both hands, accurately naming the enemies approaching from a distance in turn, or a habitual action, each enemy would subconsciously make up for one more shot, lest he not die thoroughly.

The two of them were like two efficient meat grinders, and no number of enemies rushed up to them to cause trouble, and it didn't take long for the corpses of the enemies to be covered around.

Suddenly, the wolf girl's ears moved, she looked up and looked ahead, the pain immediately contracted, and reminded Mu Chen with the intercom: "At 1 o'clock, a large mechanical guard appeared to cover me!" ”

As he spoke, he knelt down on one knee, left

The hand rests on the knee to support the right arm, and the right arm opens from the wrist to reveal the barrel inside, a small particle beam cannon that needs to be briefly recharged before it can be used.

Mu Chen hurriedly came to the wolf girl's side, and the frequency of the two guns was increased a lot, providing the wolf girl with cover for charging time.

The cooperation between the two is extremely tacit, even if the wolf girl can't fight for a while, the swarming enemies still can't approach, and can only raise their guns to shoot back from a distance.

But the gun couldn't be raised, it was covered by Mu Chen's firepower, and a few sporadic shots could not pose a threat, and even the combat uniforms of the two were intact.

More than 10 seconds later, the wolf girl's side was charged, and a particle beam was launched, whistling and hitting the mechanical guard, followed by a violent explosion, setting off a gust of wind in the underground base, and when the wind dispersed, only a pile of scrap metal was left in the location of the mechanical guard, and the surrounding buildings were also blown apart, and the flying building materials smashed many enemies.

"Well done!" Mu Chen praised the wolf girl beside him, put away the laser gun in his right hand, and pulled out a war knife from his back.

The enemy is still approaching, and it is obviously unwise to use a ranged weapon at such a distance, and when fighting in close quarters, the firearm may not be as good as the fist.

The laser weapon in the left hand continued to shoot at the enemies in the distance, and the enemies who approached the two were beheaded by the swords in their right hands, and many of them died before they could even scream.

And the wolf girl has been guarding Mu Chen's side, assuming defensive functions, opening her energy shield to help Mu Chen block attacks that she can't dodge, and the laser weapons at her fingertips have not stopped, but the hit rate is not as terrifying as Mu Chen.

There are nearly 2,000 people in this underground base, most of whom are well-trained combat personnel, but unfortunately they are learning the skills of assassination and sneak attack, and they have no power to fight back in the face of two top combat elites who have fought on the battlefield.

The alloy war knife in Mu Chen's hand was cut off, this knife was far worse than the dragon tooth war knife, and there were often some gaps when cutting against the enemy, but it was only used for a while that Mu Chen casually inserted it into the eye socket of a black strong man, and snatched the enemy's katana and continued to fight.

At this time, Mu Chen especially hoped to repair the dragon tooth war knife as soon as possible, and he was used to it for so long, and suddenly changed to other knives, which felt a little awkward in terms of feel and weight.

It didn't take long for this katana snatched from the enemy's hand to be stuck in the heavenly spirit cover of a short woman by Mu Chen, and it was deeply stuck in the skull, and it might splash a lot of disgusting things when pulled out, so it was better to be there.

Mu Chen picked up his toes and hooked up a mountain knife from the ground, the weight was quite appropriate, but there was no blood groove on it, and it was easy to be stuck by the bones when he cut it on the enemy, but he couldn't find and bear it for a while, so he would use it.

"Your Excellency the Night Stalker, this Mu Chen is too powerful, you still let me deal with him, right?" The tall man in a suit asked with some excitement, he hadn't met such a tough opponent for a long time, and he had already itchy hands.

"Okay, you can try his skills...... the old man in the mask nodded.