"Old man, are you still busy, have you eaten?"

"Tell me, you kid, what's the matter?" Wu Siyuan looked up at Li Shanhe and said.

"Those biometric alarms can sense invisible mutants, right?"

"Nonsense, its principle is to sense the energy in the body of the organism, and the mutant can also make the energy in the body invisible, why do you suddenly ask this?"

"It's okay, just ask, you're busy, I'll go first." After speaking, Li Shanhe turned around and left.

"Stand there!" Wu Siyuan roared, "Say, is there any situation?" Wu Siyuan jumped from behind the test bench to Li Shanhe like a monkey, staring at him with a pair of bloodshot eyes.

"Just now Chang'an City called, saying that there was a fourth-level mutant there, and its ability is invisible, I'm not worried that it will come to us, so I'll come and ask you about it." Li Shanhe said with a smile.

"Level four?" Wu Siyuan frowned.

"Yes."

"That's a bit of a problem!"

"Didn't you just say it's okay?"

"That's because you didn't tell sù that it's a fourth-level mutant, and the mutant often has some special abilities after reaching the fourth level, if its ability is invisible, maybe it has the ability to evade detection, and then it will be troublesome!"

"What then?!" Li Shanhe hurriedly asked after hearing this.

"Don't worry, it doesn't necessarily come to us, I'll think of other ways first."

"Okay, I won't bother you." Li Shanhe left gently, so as not to disturb Wu Siyuan, who was in a state of thought.

In Chang'an City, groups of soldiers cautiously searched the streets. On the road were the corpses of a soldier or a survivor. Some of them lost their heads. Some were directly trampled into flesh, which was the trace left by the invasion of the fourth-level mutant.

Its whereabouts are extremely secretive, its body is integrated with its surroundings, if it is not in a state of movement, even if it passes by its side, its existence cannot be found, and its size is relatively large, and the vibration when moving is relatively small, so it is extremely difficult to detect. As soon as this fourth-level mutant entered Chang'an City, it caused huge losses to Chang'an City.

After a gallop, Feng Tang had already arrived in Chang'an City and joined the search operation of the front-line combat troops.

"Where the hell do you think this monster is?"

"Shhhh

There was a faint sound, and on the roof of the street where the soldiers were searching, a large triangular head seemed to merge with the surrounding air, and suddenly opened its mouth, and then a long tongue the thickness of an adult's arm stabbed out. After stabbing from the top of the building and piercing the helmet of a warrior. Shot directly through his head, and the warrior fell to the ground without even having time to snort.

"On it!"

Seeing the soldier who had his tongue withdrawn, he hurriedly shot at the roof of the building, and at the same time reported the situation to the headquarters, and immediately a large number of troops were increased in this direction, and the helicopter gunships also approached quickly, but their far-infrared display showed no other large heat source except for the tanks moving west.

When nearby warriors and tanks arrived, they lost track of the monster again.

"Strange!"

With a click, a piece of cement fell from the roof.

"It's still up there!"

"Developer powder!"

Boom, boom, cannon fire, burst in mid-air, and then a large number of special phosphors spilled from the air, as if it was snowing, quickly falling towards the ground.

Sou!

When this special material was about to fall, a huge figure suddenly appeared, and then quickly moved in the northwest direction, almost instantly escaping from the coverage of the developer powder, and in the process of escaping, killed hundreds of soldiers and knocked over several armored vehicles.

"The target is moving, in the northwest direction, all units pay attention, all units pay attention!"

"Northwest direction!" Feng Tang, who heard the news, also moved in the northwest direction at the first time, and he didn't have to go far before he felt the vibration from the ground below him, obviously there was a big guy rushing in this direction.

He chose a suitable direction to wait, and felt the vibration under his feet getting stronger and stronger, but there was no trace of anything on the empty and wide street.

The nearby warriors were also on standby, and they had more advanced instruments in their hands, and the vibrations from the ground detected the specific location of the terrible mutant, but this detection method only worked when it moved, and the searching warriors were as if they were blind when it was still.

I can't even see the target clearly, how can I snipe?

Rumble! Rumble! The tank diagonally opposite Feng Tang suddenly opened fire, and the shells exploded in mid-air, and the same developing powder as just now quickly scattered, but it was violently blown away by a strong wind to other places, and then a strong momentum came to it.

It's coming, it's fierce!

Ice!

Feng Tang instantly summoned a wall of ice and completely sealed the entire road.

Click, the hard ice appeared like a spider web crack at the moment it was formed, and then a bang was heard, and the entire ice wall was directly smashed by a huge force, and Feng Tang, who was very close, felt a strong force rushing to his face flash.

It's the fourth-level mutant!

"We've found it, here!" The developer powder that was blown to the ground revealed a large footprint, unique to reptiles such as lizards.

"It's not a chameleon, is it?"

Rumble! With a bang, a large hole suddenly appeared in the wall of a building.

"It's storming into that building!"

The gunship in the sky launched missiles according to the target position provided by the fighters on the ground, the purpose was the building that had just broken through the wall, and several missiles rushed into it with the firelight, causing a violent explosion, and then in the fire and smoke, a huge figure suddenly appeared, it was a lizard with an elongation of more than ten meters, covered with strange fine scales, and the body seemed to be surrounded by a strange mist, which made people unable to see clearly, the triangular head, A row of erect bone spurs runs from the top of the head to the caudal vertebrae. A pair of huge eyes gurgled and swirled, and it disappeared in less than a few seconds.

Da da da, boom, just in these ten seconds, on the ground, the nearby combat troops, all the guns and armed artillery fire were all gathered together, and they bombarded it in one go, but the result did not have any attack effect, and the mutant disappeared.

"Damn, it's gone again!"

When the soldiers on the ground were worried about how to find the traces of the fifth-level mutant, suddenly a soldier noticed that the instrument in his hand had a particularly strong signal response, as if something was coming in this direction.

"Be careful!"

As soon as he shouted, he saw more than a dozen comrades-in-arms in front of him fly up at once, and several of them even broke their bodies into two knots in mid-air, and their flesh and blood flew sideways.

"It happened, what, he was stunned!"

Roar, a fishy smell entered the nasal cavity, and then there was permanent darkness.

At this time, Feng Tang was also very anxious, he had no strength but couldn't show it, watching the heroic soldiers constantly die in front of his eyes, this feeling was annoying but helpless.

Everywhere the monster passed, corpses were strewn and rivers of blood flowed, but they were barely hindered.

In the command center of Chang'an City, Zhao Nanbei's two thick eyebrows were almost twisted into one, the fourth-level mutant in the city gave him a headache, and he sacrificed a large number of soldiers but he didn't even figure out its traces, but the ability of this mutant was too weird, and those experts in the research institute gathered together to think about countermeasures according to the information transmitted back from the front line.

"Xiao Li, you go and try." Zhao Nanbei, who was pacing back and forth, suddenly stopped and looked at a young soldier with dark skin and a sturdy figure standing aside.

"But, Commander, if I go, you're here."

"I can't care so much, the soldiers on the front line are fighting bloodily, you go too, I don't have to worry about it here!"

"But"

"Not so much, but, this is an order, go now!"

"Yes!" Xiao Li saluted and left quickly, leaving Zhao Nanbei and the chief of staff and a secretary in the command center.

"Commander, don't be too anxious, even if Xiao Li is afraid, it won't make much difference, even if he can find that mutant with his ability, but we don't have the ability to kill it!"

"Well, I know this, let him go, just to reduce the sacrifice of soldiers on the front line as much as possible, but unfortunately, he is not here at this time!"

In the city of Chang'an, in the panic of the streets.

"Ten o'clock direction, northwest of Maoming Building!"

Boom! Artillery fire was fired, and the sky was full of developing powder.

With the addition of the special perceptual awakeners, the originally panicked and disorganized battle gradually had a clue, of course, this is only to reduce the casualties of the fighters as much as possible, even the perception range of the third-level awakened person of the perception class who rushed from the command center of Chang'an City is limited, and once the fourth-level mutant moves, it is like a gallop, a leap is a hundred meters, and it is far away in an instant, leaving his perception range.

"Oh no, let it run again!" Xiao Li was annoyed when he found that the mutant had escaped his range of perception again, and then heard screams in the distance, and he didn't know how many more soldiers had died for it.

After a battle, the mutant was not injured, but the soldiers of the entire Chang'an City sacrificed more than a thousand people, and a large number of survivors died, the number has not yet been counted. (To be continued......)