Although this planet is suitable for human habitation, its air quality is far inferior to those that have been transformed or are naturally suitable for ordinary people to live in. The atmosphere on the surface of the planet is slightly thinner, which will cause a certain burden on the human respiratory system and is not suitable for Live, but a short stay is fine.

Although Zhong Liuying had not undergone systematic training by the army, after all, he was an Alpha with stronger physical fitness than ordinary people, so he did not feel much discomfort when he was on the ground, but when he followed the two female Alphas into the cave, A sense of burden was clearly felt.

The cave is filled with a stench from biological secretions, mixed with air thinner than the ground, making people feel like they are on the verge of suffocation.

And I don't know if it was because of the "neurotoxin" that Qu Yao had mentioned before. Ten minutes after entering the cave, Zhong Liuying felt black in front of him, as if there were signs of poisoning.

Just when he wanted to report the situation to the captain, Cen Zhao took out two masks from his bag and threw one to him.

"Put it on, there's something wrong with the air here."

Zhong Liuying hurriedly took it, put it on before she really suffocated, and then felt that the whole person was rescued. Not only did the nauseating stench disappear, but even the symptoms of dizziness were relieved a lot.

Cen Zhao also put on a mask, and then looked at Qu Yao: "Can you solve it yourself?"

She only brought two copies of all the equipment, so she could not take care of Qu Yao, the "third party", so she could only rely on herself.

Qu Yao dared to come here by himself, of course he was prepared, he gave her a no-worry gesture, and took out a mask, which at first glance looked very similar to those worn by Cen Zhao.

The three continued to descend, taking every step carefully.

Although the passages in the cave are sloping, not all places are suitable for pedestrians. However, Cen Zhao's miniature mecha is not afraid of this difficulty. Even if the route is marked with the portable intelligence, there is no guarantee that you can return to the ground safely in the end.

But what reassured the three of them was that Alpha's pheromone had a very obvious effect on the repelling of bugs. They had never encountered a bug since they went down the hole, which made them think that there were no bugs in front of them, but when they converged the pheromone , the swarms of insects rushing up in front of the passage made Zhong Liuying scream and almost fell down the passage, but it was Cen Zhao who gave him a hand to get him back on his feet.

If the previous performance is still in the category of ordinary people, Zhong Liuying's performance is really a bit extreme, attracting the attention of the two sisters, and his face is red when he looks directly.

Cen Zhao glanced at the end of the passage where no insects could be seen, and asked Zhong Liuying curiously, "Are you afraid of insects?"

Zhong Liuying's first reaction was denial, but halfway through shaking her head, she answered honestly, "Yes." Then she explained in a low voice, "My friends made a prank with bugs when I was a child, and they put a layer on my birthday cake. Although the insects are edible, one bite still caused a psychological shadow on me, and since then I felt uncomfortable when I saw the insects, but it was not fear, but a physiological response."

As soon as Qu Yao heard this, a picture appeared in his mind, but after all, he was a person who grew up with all kinds of strange materials. The corners of his mouth twitched, and he glared at her, holding back the "what taste" she hadn't asked yet.

Cen Zhao raised his hand and patted Zhong Liuying's shoulder: "This trip has worked hard for you. If you can, get rid of this habit of yours here, or your future work may be affected."

When Zhong Liuying heard this, she was stunned for a moment, and then she didn't know what to think. She nodded solemnly with a heroic expression, looked at the front of the passage, and took a deep breath.

It was probably a coincidence that after the three stopped for a while, they moved forward. Just after a turn, the road ahead became more rugged, and the color of the rock wall also changed significantly. The color was darker, close to black. It seems that the position where they stood just now is exactly at a dividing point, and there are two completely different worlds before and after.

Because of this change, the three stopped again.

Qu Yao found a more suitable position, squatted down, checked the geological conditions here, even took off his mask to breathe the air, grabbed a little soil on the ground and put it on the tip of his nose to smell it carefully.

After sneezing, Qu Yao put on his mask again, pointed to the unknown area in front of him, and said, "The soil here is similar to the soil of the mound outside, but the content of unknown substances is less, that is to say, here is more soil. Going forward, it should be the active area of ​​the flower bugs, if the flower bugs have a high status in their hierarchical society, moving forward here may be the core activity range of these bugs."

After listening to her words, Cen Zhao cautiously observed the surrounding situation, and after confirming that their pheromone dispersal effect was still effective, he raised his hand to signal everyone to move forward, while distracting attention to Zhong Liuying's state.

Psychological problems can’t be easily solved with just one or two sentences. On the surface, Zhong Liu should be not afraid of the sky and earth, and he has great potential abilities, but he is still “vulnerable” when faced with psychological weaknesses. After the fire broke his mind, where was she going to find the next assistant with space ability?

Fortunately, Zhong Liu should adapt well, and I don't know if she hasn't seen a lot of bugs all the time. At least her feet don't slip any more, she steps steadily on every step, and the release of pheromones is also very stable. She doesn't need to worry about it for the time being. .

The three of them walked three or four hundred meters in a straight line. They felt that the surrounding temperature was getting higher and higher, and the concentration of unknown gases and toxins in the air was gradually increasing. Even the masks produced by the base could not be completely To ensure that his breathing is safe, Cen Zhao decisively stopped.

"Going forward, we need higher-end equipment. Of course, hard resistance can also withstand a period of time. The problem is that we don't know what else is ahead."

The data returned by the detector she released showed that this place really seemed to be just a simple worm nest. There was no other special feature except that it was very large. The larger area was beyond the detection range, and because of the worm's It cannot detect farther, otherwise the detector will suffer losses.

The equipment on her body is all personal high-quality equipment of individual soldiers, and there are very few backups. Unless necessary, it is better to protect it well.

Cen Zhao thought that after she finished speaking, Qu Yao would answer, but Zhong Liuying, who was afraid of insects, was the one who didn't want to speak.

He said: "In that case, let's collect the pheromone and see the bugs."

Cen Zhao raised his eyebrows and looked at him: "Aren't you afraid?"

Zhong Liuying shook very obviously and smiled dryly: "I'm afraid, but it's fine if you are mentally prepared, and I will try my best to control the range of pheromones so that they don't get close."

Qu Yao gave him a thumbs up: "Yes, the guy has a future, and he is indeed the one who follows the pomegranate."

So the three took advantage of this time to slowly converge the pheromones while chatting.

"Where are those two people now?" Qu Yao was very curious about this. "They seem to be professional treasure hunters. If they have professional equipment and pheromones to open the way, they might have reached the core of the nest by now. ?"

"Maybe." Cen Zhao didn't care much about the stranger's situation, after all, her purpose in coming here was not to open up wasteland.

And because of Uncle Yan's relationship, she guessed that this place had already been opened, but it was not made public for some purpose, and all she had to do was to find out the purpose of Uncle Yan letting her come here.

At present, for her, the value point may be those bugs. After all, the characteristics of these bugs are very consistent with her major. Compared with treasure hunting, digging deeply into the development value of bugs is more developmental.

But in this case, the problem arises again.

Since Uncle Yan knows that bugs have research value for her, they are equally valuable to other mecha engineers and mechanical designers. No matter how confident she is, she knows that with her current strength, she is not among the top group of interstellar people. name, why did this opportunity fall on her?

Thinking of this, Cen Zhao suddenly remembered that he was missing a piece of the puzzle, so he didn't investigate further, buried all his doubts in his heart, and only focused on the present.

At this moment, Cen Zhao's ears suddenly caught a faint sound.

"etc!"

The other two looked at her at the same time.

"Did you hear the sound of water?"

Qu Yao listened attentively, while Zhong Liuying raised his hand to make a trumpet shape beside his ear.

Two seconds later, both of them said they heard it too.

Cen Zhao suddenly felt an ominous feeling, it seemed that some danger was approaching, the whole person was stimulated by this feeling, and a voice in his ear kept warning her - "Get out of here! Step back!"

Cen Zhao made a decisive decision: "There is a problem ahead! Release pheromones as much as possible, and then let's go back! Act fast!"

Zhong Liuying reacted the fastest, turned around and went in the same direction as when they were coming and going, using both hands and feet to retreat quickly.

Qu Yao hesitated for two seconds, then glanced at the unexplored front regrettably, and then turned to keep up.

That is, in these two seconds, she was five or six positions behind Cen Zhao.

The surrounding terrain is complex, with many holes, and with just such a small distance, she almost lost the two people in front of her, and it took her a few hard jumps to catch up again.

Five minutes later, Cen Zhao's hunch receded a little, and he no longer felt that dangerous, but new problems followed one after another.

They got lost.

At the speed of their retreat, five minutes was enough time for them to get to a slightly outer position. At least the air quality should have picked up, but it didn't.

Obviously the direction is correct, and occasionally you can see the road signs along the way, but all three know that this is not the exit direction.

Cen Zhao's expression was a little dignified, he raised his hand and touched the rock wall: "The road here is changing."

Qu Yao's expression was equally solemn: "But I am sure that what we are stepping on is non-biological material, it is not alive, so it should be external force that caused the change."

Zhong Liuying raised her hand to cover the back of her neck, her voice trembling a little: "I seem to know what's going on."

Cen Zhao and Qu Yao at the same time: "What's going on?"