This is a mutated species like a cuttlefish, but it is different from the cuttlefish, the viscous black juice in the skin bag is poisonous, and Yin Dong scratched one, and in the waters polluted by the black juice, countless fish and shrimp suddenly turned up, densely floating, and Qiu Ying has a dense phobia.

Qiu Ying looked at the surface of the water, she couldn't see Yin Dong's figure, there were only surging waves on the water, and the rapidly spreading black, until the water surface as far as she could see was blackened, as black as ink, and she couldn't help shouting: "Dongzi, you come up first, this black juice is poisonous!"

Yin Dong did not respond, and the black waves in the mountain stream became thicker and darker. At this time, he had cleaned up the strange fish in the mountain stream and dived towards the entrance of the underground dark river.

That kind of strange fish swim out of the underground dark river, Yin Dong arrived at the entrance of the underground dark river, you can see that there are more huge strange fish, because the entrance of the dark river is too small, it is blocked on the other side, and therefore, the stagnant water that flows into the mountain stream cannot flow smoothly into the underground dark river, and the water level of the mountain stream will rise so quickly.

If Yin Dong spreads the entrance of the dark river, there will only be more strange fish running out of the dark river.

Yin Dong saw that his scalp was a little numb, and he didn't immediately start expanding the entrance of the dark river, but directly bombarded the strange fish blocking the other side. This kind of strange fish is huge, but it has no attack power, Yin Dong chops melons and vegetables, slaughtered nearly a hundred strange fish, the thick black sticky black juice is extremely fishy, even if he uses the breathing technique, it is difficult to stop that kind of smell.

Yin Dong couldn't help complaining: "It stinks! Shell god, can you identify what kind of strange fish this is?"

There was a wave of schadenfreude from the mysterious shell - this is an ancient xenomorph, called stinky fish, also called the earth yin insect, which grows in the depths of the earth's heart in the yin and evil place, the black juice is poisonous, the toxicity is not strong, it is smelly, it can't be cleaned, it can only be slowly volatilized, and the smell can't be emitted within a month or two.

"You're fooling me, aren't you?, and this kind of worm?" Yin Dong expressed disbelief, seriously suspecting that Mystic Bei was fooling himself. However, when he heard that the insect was not very poisonous, he was relieved to continue to slaughter the earthshade insects that swam from the dark river.

After slaughtering all the earth yin insects that could be found, Yin Dong asked again: "Is this black juice considered a kind of energy, can it be refined?"

The mysterious shell came with another thought--what about IQ? It has been said that the earth yin insect grows in the depths of the earth's heart to the yin and evil places, and this kind of insect must be full of yin and evil filth in its body, unless it is to cultivate the yin and evil exercises, otherwise, refining the earth yin worm is equivalent to absorbing impurities and filth.

After being taught a lesson, Yin Dong was not a little dissatisfied, and silently expanded the entrance of the underground dark river nearly doubled, and then surfaced, and just appeared on the surface of the water, he heard Qiu Ying's shout again.

"Eh, I'm here, what's wrong?"

Yin Dong said, rushed out of the water, tapped his toes on a dead fish on the surface of the water, landed on the pine branches stretching out outside the entrance of the cave, smiled at Qiu Ying, who leaned out of the entrance of the cave, and said: "The underwater has been cleaned up, and the entrance of the dark river has also doubled." This water is poisonous, so don't let people touch it. ”

Captain Cheng and a Yuwan warrior brought a batch of freshly made fences over. Seeing Yin Dong, Captain Cheng hurriedly asked, "Instructor Yin, do you think this kind of fence can be used?"

The fence is very rough made, but it is very solid, it is all made of a tree trunk that one person hugs, and then tied with a rope made of mountain rattan, if it were not for a strong man like the bay crocodile, Captain Cheng and they really couldn't transport the fence over.

"Good. Yin Dong nodded and said, directly brought the fence underwater, inserted it in the rocks at the entrance of the dark river, and arranged it in a disorderly manner, forming a fence trap, which does not hinder the flow of water, but can intercept the fish swimming in the dark river and trap the fish in the fence trap.

At the same time, he sharpened the upper end of the fence, and if a fish swam over the top of the fence trap, the abdomen would definitely be cut.

Of course, this kind of fence trap intercepts large fish, and fish smaller than two meters are not within the interception range. Even if they swim out, they can't fall into the nets that cover the mountain streams.

After Yin Dong laid a fence trap at the entrance of the dark river, he used a fence to drive the two sides of the mountain stream around this section of the underground karst cave into the stone wall horizontally, and the fences on both sides were staggered to cover this section of the mountain stream to prevent the strange fish in the water from rushing out of the water and hurting people.

Subsequently, Yin Dong asked some mountain rattan nets to come over and fix them on the rocks on both sides of the mountain stream. If the strange fish in the water breaks through the fence to intercept it, it will also hit the mountain rattan net.

After all this, Yin Dong confessed again: "Arrange people to guard this section of the mountain stream, and don't let people touch the water in the mountain stream." The water is poisonous, not very toxic, and when it is stained with water, it will be stained with the stench of evil and filth, and it will take a month or two to dissipate. ”

"Huh, it will take a month or two to dissipate?" Qiu Ying cried out in a lost voice.

Seeing Qiu Ying's strange expression, Yin Dong subconsciously raised his arm, smelled the smell on his body, his face was a little dark, and he said helplessly: "I also heard that maybe if you are washed by the rain, the smell will disperse faster." ”

"It's really not poisonous?" Qiu Ying was a little unconvinced, it stinks like this, it really won't be okay? Maybe Yin Dong was afraid that she would worry, so he deliberately said this lightly, right?

"When did I lie to you?" Yin Dong asked rhetorically.

Qiu Ying's eyes flashed, she still didn't believe it, but she didn't refute it, and opened the topic: "Will the wooden fence be soaked in the water?

"Don't use it yet, this kind of earth shade worm is not very strong. A wooden fence is enough to intercept. At most, prepare some spare, and every day I go into the water to check and replace the bad ones. ”

Not to mention that the iron has not been smelted yet, even if it is, Yin Dong is reluctant to waste iron on making iron fences. Good steel has to be used on the edge of the knife, and steel is in short supply now.

The survivors of Donglai City have lived in underground karst caves for a while, and they have not explored the surrounding situation very much, but they have also found an iron mine, and it is also a rich mine, and there are many black stones containing iron on the surface of the mountain.

However, the mining of iron ore relies entirely on manual labor, which is inherently inefficient, and it is a local method of iron smelting, and there is not much iron that can be smelted every day, and it is necessary to give priority to the production of production tools and weapons, and it is really impossible to refine iron fences.

Qiu Ying thought about it, so she arranged for someone to patrol this section of the mountain stream, and then, she asked: "Let's go back to the fleet to see Xiaobao, throw him on the boat alone, not even Dajin, I'm not at ease." ”

"I'll go back alone. "Transferring the young men of the fleet to the underground cave, Qiu Ying will definitely stay in the cave with her management team, Yin Dong doesn't want her to brave the storm to run back and forth.

"I'm going!" Qiu Ying screamed, with a little coquettishness, and when she spoke, she felt embarrassed again, and quickly said a very righteous and bright reason: "The meat of a batch of mutant beasts stored in the fleet has begun to deteriorate, I'll go over and check it." ”