All kinds of weapons were fired in unison.

Bullets rained down on the giant rat swarm, and the rapidly approaching rat swarm was like a wave meeting a hard reef, and it was instantly crushed.

But a temporary setback did not mean that the hungry creatures would flinch, on the contrary, they charged at the soldiers on this side of the rock with greater speed and a more desperate attitude. The smell of blood from their companions and the pain of the bullets in their bodies irritated them to the extreme. If the mutant giant rat with strong vitality does not hit the vital point, it needs to be shot several times or even more than a dozen times before it completely loses its mobility.

As for killing, unless they hit the brainstem or heart of the brain, they will collapse on the swamp and struggle until the blood runs out.

"Fire with all your might, the machine gunner suppresses the rat swarm, the sniper shoots accurately! Find their leader, there must be a leader among them, find it, just kill the giant rat leader, these dog mongrels will disperse immediately!" "Little Eric had never encountered a mutated giant rat, but he knew that underground creatures often had leaders.

Killing bosses is the best way to force back the Underground.

Of course.

It's not easy.

Because of the harsh living environment of underground creatures, they are far more cunning than ground creatures in the case of survival of the fittest.

Lin Dong could clearly sense the existence of the leader of the rat group, and Lin Dong had guessed the truth about the mutation of these giant rats, but it was impossible for him to tell little Eric this kind of secret. He came here with the psychology of making a fortune in a muffled voice, how could he stuff his own money into other people's pockets!

The soldiers were shooting very nervously, but Lin Dong entered a leisurely theater mode.

A rare Hollywood shootout blockbuster!

You don't have to spend money on movie tickets!

"Grenades! hurry, they're coming!" many of the soldiers saw that the bullets were gradually losing their control. Quickly remove the grenade from yourself and pull the safety open. Then throw it hard at the tide of enemies.

"Hell, is this still a mouse?"

"I think these things are stronger than cows!"

"Shoot the fish that slipped through the net. It's fast, shoot it, shoot it!"

Several places were broken through by the rat swarm, making the soldiers uneasy, but fortunately, Philip and Griffin were there, and they easily killed the fish that slipped through the net, so that the entire front remained stable, and with the joint operation of everyone, the soldiers persevered until Josiah and the genetic soldiers came back. The Soldier and the Super Elite join forces. The firepower is super strong, the morale of the soldiers is greatly boosted, and the performance is getting better and better, and the mutant giant rat is still unable to break through the soldiers' gun flames despite paying heavy damage and dying.

Under the strong interception of modern firearms, the mutant rat group gradually had nearly one percent of the sacrifices, with countless corpses and blood all over the ground.

I don't know if the leader gave the signal, or if it was because of fear.

The rats retreated reluctantly.

They're just like when they came. Quickly retreated into the darkness, and in a few moments, disappeared without a trace. If it weren't for the mountains of giant rat carcasses on the swamp floor and the thick misty smell of blood, one would have wondered if such a giant mutant rat swarm had ever actually appeared.

"We've been in so many times before. But this is the first time I've encountered this mutant rat swarm!" Little Eric felt that everything was not going well this time, first the time when the mysterious door opened and closed. There was a big difference, and then there was an attack of the underground whipworm. Before descending into the abyss, he was almost forced to retreat by a group of jellyfish-like monsters. Now it's just the beginning of the exploration. I have encountered so many troubles, and I don't know what will wait for the next trip! Unfortunately, the shortest opening time of the mysterious door is also five days later, and there is no return, otherwise little Eric will build yì and retreat back to the base for the time being.

"What about the casualties?" Josiah asked, frowning.

"Fortunately, the rat colony did not break through the defensive line, and we have no casualties for the time being. However, in just a few minutes, we had used up a third of our ammo, and as we continued deeper, we wondered if the same large swarm of underground creatures were coming. Little Eric didn't expect that the bullet consumption would be so strict, but the situation was urgent, and if he didn't shoot desperately to intercept it, I was afraid that the whole team would let the rats gnaw at it.

"There's a cave not far ahead, and we've left some ammunition there, and we can't replenish it all, but let's make do with it!" Josiah motioned for the team to leave immediately.

The strong smell of blood will attract more and more powerful underground creatures.

Stay here again.

Lives can be in danger at any time.

The soldiers hurriedly dismantled the tent and transferred, and the leisurely Lin Dong ran over to the corpses of the mutant rats and looked at it for a while.

Professor Jeffrey followed him almost inch, motioning for his subordinates to take pictures, while staring at Lin Dong's face, as if trying to see something on his face. The female soldier in charge of protecting Lin Dong nervously took out her pistol and pointed at the half-dead mutant giant rats on the ground, fearing that they would turn over and hurt people again.

"What makes them mutate so much?" Fawkes asked.

"I don't know yet. Lin Dong shook his head and did not make up his mind: "I suspect that there is an almost constant source of pollution or radiation in the vicinity. These giant rats are not something that can become like this in one or two generations, they have mutated into this form for perhaps a thousand years, or even longer. ”

"A constant source of radiation allows the mutation to continue?" Big Ivan keenly captured this information, and Professor Jeffrey on the other side also flashed his eyes.

"Theoretically, yes, but the radiation source has to be strong enough and exist for a long time. Lin Dong smiled.

"Isn't there such a study on the Chinese side?" asked Big Ivan tentatively.

"I don't know, at least in my hands there is no such research. Personally, I don't have a high appreciation of genetic mutation, on the contrary, I think that the original genes of human beings are the best, and if they are mutated, they may gain power for a short time, but they also need to pay some other price in exchange, which is a very unworthy result. Lin Dong shook his head and said.

"The price?" Professor Jeffrey asked curiously, "What price did the genetic warriors pay in exchange, how do I not know?"

"It's hard to explain this for a while. If you look at it with our cultivation method. When a soldier with a genetic mutation cultivates, the effect will be slower than before the mutation. Lin Dong gave an example with reservations.

"Your oriental-style cultivation?" Professor Jeffrey smiled, "I don't think your legendary Immortal Cultivation Dafa is of any use. These are the fantasies of the ancient alchemists!Mr. Wood, despite your genetically respectable achievements. But please don't mislead us into fantasies, okay? Our Mayflower team is very sincere in cooperating with you!"

He thinks that the oriental-style cultivation is fake.

Fantasy general storage zài.

Even.

Professor Jeffrey thinks that Lin Dong deliberately misled himself by saying this, using ethereal things to cover up the truth about genes.

Lin Dong was displeased with his thoughts on the surface, but secretly praised in his heart, it would be too much for you to think like this, and this is the result I wanted! However, on the surface, Lin Dong's face sank: "Professor Jeffrey, please let us each reserve our own opinions!"

Little Eric saw that Lin Dong's face was wrong, and hurriedly stepped forward to apologize: "Mr. Wood." We have no ill will towards you, we just want you too much in genetics!"

"Professor Jeffrey, don't you think Mr. Wood is just a powerless nerd?" said Big Ivan.

"Isn't Mr. Wood's strength based on his genetic theory?" Professor Jeffrey didn't believe that Lin Dong's 'kung fu' was really practiced. In fact, not only him, but even Philip and Fox have the same suspicions. It is impossible for ordinary college students to be so powerful, Lin Dong must have been injected with the best genetic medicine, maybe it is a gold-level genetic medicine that has never appeared.

It's a little different from Professor Jeffrey.

Philip and Fox also felt that part of Lin Dong's strength was indeed practiced.

Oriental-style cultivation. For Jeffrey, the professor is ridiculous, an alchemist's fantasy, but for them, as super powerhouses, oriental-style cultivation is a real thing.

It is a kind of 'qi' that is more powerful than blood energy. A special energy that Westerners can't cultivate, and only the physique of Easterners can successfully cultivate.

Fox and Philip even suspected that because of cultivation, Lin Dong opened up the brain domain. opened the forbidden zone of God, so that he could obtain results in genetics far ahead of his time. At the same time, the body has been greatly strengthened. The double strengthening of brain power and body will be the ordinary college students of the past. Become the world-famous Mr. Wood today.

"Hey, you guy who doesn't even qualify as a novice apprentice, shut up immediately!" The griffon was furious when he heard that Professor Jeffrey was talking about the god he admired the most.

"I think you're jealous, too!" said Big Ivan, adding fuel to the fire.

"It's you who should shut up, I'm also an authority, but I'm not as good as Mr. Wood, you guys aren't the ones I should be talking about at all, right?" Professor Jeffrey smiled coldly, if it weren't for Lin Dong's 100% success rate in doing genetic realization, which was too much of a bunker to deny, he wouldn't be convinced. What are griffins and big Ivan? A martial artist who only knows brute force, a spy leader of the Hairy Bear Country, do you know what science is? It's ridiculous!

"It's okay to have a controversial view of things, and I'm not a dictator. Lin Dong smiled slightly: "However, the controversial matter, let's leave it to go out, now it's time for us to go, in the dark, I sense that there are many things approaching ......"

"Let's go!" little Eric immediately became nervous when he heard this.

In the past, he was a little dismissive of Lin Dong, thinking that no matter how much he could fight, he would be similar to himself.

But after a period of time, he found that he and the other party were not at the same level of existence at all.

Whenever danger arises, it is always the other party who is the first to warn, long before entering the abyss and having many 'rich experience' of self. And this genius scientist who has never entered the underground world is extremely accurate in his observation and judgment of things. Compared to him, he really looks like a novice apprentice, ah no, maybe he really doesn't even have the qualifications for a novice apprentice!

The group found the cave that Josiah had spoken of.

The cave is very small.

Not a cave, to be exact, but at most a dwelling for a group of underground creatures that had been carved out of a gap between the huge rocks, and then cleared by humans and given a makeshift resting place.

"Here!" Lin Dong frowned as he approached the cave.

"Is there something wrong with this cave?" Fawkes is best at reading.

"There's a strange smell, maybe there's been a powerful creature before. In other words, there have been strongly polluted creatures here before, and if we can find them, maybe we will be able to find the source of the radiation contamination even better!" Lin Dong observed the cave and asked Josiah next to him, "When you cleaned it up before, did you find any bones or the corpses of huge creatures?"

"No!" Josiah shook his head, "This cave is not big, has there ever been a huge creature?"

"It should have appeared, but most of the traces were destroyed, it's a pity!" Lin Dong watched the cave wall with a flashlight for a while, and finally shook his head.

Everyone looked at Josiah.

Everyone suspected that this guy was lying.

It must have been discovered before, and Josiah moved it back to the base, but it was too secretive, and he chose not to tell it.

Josiah's mouth was tightly closed, if he wanted to force him to say it, it would be impossible at all, and a person like Josiah would definitely have more interests than the rice country. However, he didn't say it, Lin Dong also had a way.

"Although there are no traces anymore, there is still a little bit of the smell left, maybe we can find a way to trace it and find the real source of the radiation contamination!" Lin Dong said, and Josiah, Eric, and Professor Jeffrey were very complicated. To be honest, they didn't want him to find such an important source of radiation contamination that could mutate creatures until they had completely taken Lin Dong under their command. But if you don't rely on this Mr. Wood, how can you find the source of pollution that you don't know where it is......?