"Ding Xiu." Song Xijun seemed to think of something, and suddenly asked him, "Why doesn't the biometric identifier prompt the information of cannibal climbing?" ”

"It's probably not comprehensive enough." Ding Xiu remembered that when Chen Jiansen gave this device to himself, he said that it could recognize most of the mutated creatures, and the implication was that there were still some mutated creatures that could not be recognized.

"It may also only recognize animals and not plants." He added.

"If that's the case, then we'll have to be wary of strange plants next." Song Xijun reminded.

The cannibal climbing vines near the entrance of the cave were burned by Ding Xiu with gasoline, but there were many more in the depths of the cave. Before leaving, Ding Xiu inserted the sign left by Xu Shao in a conspicuous place outside, so that someone might mistakenly enter it later.

The road in the dense forest was very difficult to walk, and the two cars stopped and stopped, and it took a long time for the surrounding area to finally hear the chirping of insects and birds.

"That cave is like a black hole, I don't know how many lives have been devoured." Ding Xiu observed these situations on the road and suddenly felt a little emotional.

"Almost including us." Song Xijun's expression was a little complicated. She read the words left by Xu Shao on the sign, and felt sorry for what happened to them, but also glad that she and Ding Xiu could escape.

Just as the two were talking, Gu Beimo's voice suddenly came from the walkie-talkie.

"Ding Xiu, do you smell anything?"

Ding Xiu pressed the car window, and a pungent smell of burning rushed in, choking him and Song Xijun a lot.

"Tar?" Ding Xiu replied to the walkie-talkie.

Gu Beimo had already stopped the car in front of him, so he also stopped.

Following the direction where the smell came from, Ding Xiu saw that the plants there were obviously much rarer than in other places.

Gu Beimo walked over, picked up some black soil on the ground and sniffed, "There is coal in the soil, is there an open-pit coal mine here?" ”

The open-pit coal mine he refers to is a seam of coal that is deposited on the surface or in shallow depths due to geographical changes.

Ding Xiu didn't understand much, but seeing Gu Beimo's expression, this smell didn't seem to have much impact on the human body.

"That's right, it's coal." Gu Beimo confirmed again and again, and threw the black soil in his hand back to the ground. However, he frowned again, a little puzzled: "But where does the smell of tar come from?" ”

"Do you want to check it out?" Shen You asked.

If the smell can come through, it means that something is not too far away from them.

Ding Xiu weighed it for a moment, nodded and said, "If the danger has already arrived, we can't be ignorant of it. ”

The four of them returned to the car and drove in the direction where the smell came from, and there were fewer and fewer plants in front of them, and after a while, their vision suddenly opened up.

In front of them was a patch of mud filled with black viscous liquid, from which the previous stench of burnt came from.

The wheels had run over the ground, leaving deep marks, and the soil was noticeably much looser than before, and so black that it looked like it was oozing oil.

Ding Xiu and the others did not continue to drive towards the inside of the field, but parked the car on the edge of the black field, and when everyone got out of the car, they felt that the soil on the soles of their feet was a little sticky.

"Could this be the black, smelly water that the mutated estuary crocodile said?" Shen You suddenly remembered the information mentioned by the other party when he and the giant crocodile were communicating through pheromones.

"Eight or nine is not far from ten." Gu Beimo nodded, "This should be an open-pit coal mine, and there is also a shallow oil field associated with it. ”

"But the smell of tar fills the air." Ding Xiu was a little puzzled by his judgment.

"It's not surprising that tar is produced when coal is distilled, and you see, there must be tar mixed in these crude oils. It has a pungent odor and a black-brown viscous liquid, which is in line with its characteristics. Gu Beimo continued: "Almost all of the tar is obtained through industrial production, and the conditions it produces in the wild are relatively harsh, but it is not completely impossible. ”

"How do you produce it in the wild?" Ding Xiu was a little curious.

"I can't say that, maybe it will take a lot of coincidences." Gu Beimo thought for a while, "For example, open-pit coal mines, associated shallow oil fields, hmm...... And a nuclear explosion? ”

"There's some truth to what you're saying." Song Xijun's family has a chemical industry, so he knows a little about this thing.

"Can this tar be used as gasoline?" Shen You asked.

There is plenty of petrol in the car, but everyone has to walk a long way, and petrol is as important to the car as food is to people, and no one wants to have too much.

"It burns, but it can't be used as gasoline." Gu Beimo looked at the black oil that occasionally bubbled out of the field, and sniffed, "Let's go, don't worry if you figure out the situation." ”

The four of them were about to go back to the car, when suddenly a pair of antennae appeared from the black oil in the potholes, and the biometric device worn by Ding Xiu on his ears rang at the same time.

"Mutant swamp slug, species: Gastropoda, subclass Pneumona. F-class mutant creature, hermaphroditic, with corrosive mucus on its body ......"

"Hell, there are mutated creatures in this environment?!" Hearing that it was just an F-class mutant creature, Ding Xiu was not very panicked, but when his eyes caught a glimpse of the dense heads emerging from those potholes, a chill suddenly rose in his heart.

This has nothing to do with dense phobia, no matter how weak a creature is, as long as the number reaches a certain level, the ability will change qualitatively.

For example, Steppenwolf, such as mutant bullet ants.

"Retreat!" Looking at the countless mutated swamp slugs, Ding Xiu didn't have the slightest idea of fighting. He beckoned his companions to hurry up and get into the car, and stopped Gu Beimo, who was about to shoot.

"We can't shoot, in case the bullet goes off and ignites the black oil, we will definitely not be able to run out of the Fuqiu Basin."

Gu Beimo was stunned for a moment, and hurriedly put away the gun, secretly saying in his heart that it was dangerous.

This simmering area of tar and crude oil can easily turn into a prairie fire once ignited by the spark of a bullet. Moreover, the basin is densely forested, and when the wind rises, the wheels will never be able to outrun the flames.

Everyone hurriedly got into the car and prepared to leave here.

Those black mutated swamp slugs came out of the potholes, swayed their tentacles in the wind, and crawled densely towards Ding Xiu's car.

These soft-bodied creatures, nearly half a meter in length, crawl fast, and they leave sticky marks on the ground they crawl on.

Ding Xiu and the others started the car and fled in the direction they came.

"Wow, these bugs are disgusting, like slugs." Shen You saw the mutated swamp slugs behind the car from the rearview mirror, and his face was full of disgust: "Not only does it look ugly, but it also has no brains." ”

"What do you mean by being brainless?" Gu Beimo turned his head sideways and asked.

"I just can't communicate with them." Shen You explained: "Their thinking is very simple, and there is only one thought in their minds, which is to eat, or devour. ”

"Damn, don't they have any other thoughts than to eat?" It was the first time Gu Beimo had heard of such a pure "foodie" creature.

"Nope." Shen You shook his head, "There is only one picture of the pheromones they release, and that is to use the viscous liquid secreted in the body to corrode all living things, and then suck those viscous liquids back into the body. ”

"This ...... It's disgusting to think about. Gu Beimo's body already had goosebumps.

"Ding Xiu, these mutant swamp slugs are very dangerous, we have to get rid of them as soon as possible." He picked up the walkie-talkie and informed his companion in the other car of what Shen You had just told him.

"Damn it, they're in hot pursuit." Ding Xiu noticed that the soft-bodied creatures were still trailing behind the car, and they were crawling fast.

As the car drove into the woodland, it couldn't get any faster.

"They're still chasing!" Shen You was a little flustered, "Aren't these monsters afraid that they won't be able to go back after chasing away?" ”

"Seeing the black marks left by the mutant swamp slugs behind them, I guess they can follow that back into the black oil-filled swamp." Gu Beimo said, his expression was not as calm as when he got into the car just now, his brows were twisted together, thinking about countermeasures.

Mutant swamp slugs not only leave black marks where they pass by, but also make a "sizzling" sound when the slime on their bodies sticks to some plants.

Where the plant touches the slime, it quickly turns black and withers.

The creatures that can live in crude oil and tar are definitely not good, and Ding Xiu knew this very well even if he didn't see the withered plants behind him.

The car shuttled through the forest, and the back of the car merged into a sea of black.

Mutant swamp slugs are originally hidden in black oil pits, where they feed on crude oil and tar, as well as on creatures that come close. When Ding Xiu and the others came to the edge of the Zedi, they were waiting for their prey to approach, but these people did not do what they wanted, but turned around and left.

In order not to lose their prey, these mutated swamp slugs left the oil pit one after another and chased them out.

Almost ninety percent of the body of mutant swamp slugs is liquid, and these liquids are fundamental to their survival. Whether crawling or feeding, mutant swamp slugs need to use water from their upper bodies, and they use every time it rains to store water and lay eggs to reproduce.

The front was suddenly impassable, and Ding Xiu retreated in the direction he had come, but unknowingly lost his way in the woods.

A large pile of boulders sits in front of the car, cutting off the retreat, and the off-road pickup will definitely not be able to climb over those obstacles unless the car is abandoned.

Ding Xiu turned the head of the car, ready to find a way out from the direction of the flank, but the army of mutant swamp slugs had already surrounded him. There wasn't enough time to break through from the flanks, and before the car had gone far, the wheels had already run over them in front of them.

The sound of "puff puff" echoed under the car, and the mutant swamp slugs were crushed by the wheels, their bodies not split, but some black liquid was crushed from the mouthparts of their heads.

After the wheels passed, the mutant swamp slugs returned to their normal appearance, the only change was that it was a little smaller.

"Fuck, you can't even crush it?!" Gu Beimo exclaimed.

He caught a glimpse of several mutated swamp slugs silently climbing onto the body through the mirror, and his heart was even more cold, and his right hand had already touched the shotgun "Fate".