As a Mecha, I Can Evolve Unlimitedly

There is the sound of airflow, which means there must be an entrance and exit to the surface!

Sato Yu, who was already feeling a little desperate, suddenly felt like he had grasped a glimmer of hope!

It's just that the sound of air flow is very weak, which can only be caused by three situations.

First, the entrance and exit connecting the D4 area to the outside world may be very small, so the airflow sound is extremely weak.

Second, the spatial scale of area D4 is beyond imagination. The entrance and exit are located deep in the area, so the sound of airflow is very weak.

Third, the first and second situations occur at the same time, but the probability is very small, otherwise Sato Yu would basically not be able to sense the airflow.

But no matter what, Sato Yu and Douzi must first go to the depths of this unknown area before they can witness the so-called exit to the surface with their own eyes!

"...Let's go, Douzi, we still have a chance to survive!" After Sato took a deep breath, he reluctantly turned his back, completely leaving the dark red lifting platform behind!

It wasn't until this moment that Sato Yue realized how special the D4 area he and Douzi were in.

The white searchlight did not hit any metal facilities as Sato Yue expected. On the contrary, the light that spread in a cone was like a light shining into the infinite universe. It was destined to only dissipate in the vast darkness and be mercilessly swallowed!

"Why is it so wide?" For a moment, Sato Yu had the illusion that he had returned to the Black Point underground industrial base.

Unwilling to be reconciled, Sato Yuu drove the power armor around again, and finally managed to figure out the basic structure of the D4 area.

The vertical height of this space is at least more than two hundred meters, and there are no man-made objects where the light shines. They are all brown rocks that he and Douzi don't recognize.

"How could there be such a large natural cavity at the bottom of Wuju Mountain?" Sato Yu couldn't believe that such a large place was not dug manually.

But this was not what Sato Yu wanted to think about now, so he quickly put the question out of his mind and led Douzi cautiously towards the depths of the D4 area.

The mood of the two people now can be said to be both anxious and cautious. They wanted to speed up and run in the direction of the airflow, but when they thought that there might be dangers here, they had to slow down and observe the surrounding environment. While moving forward.

Drip, drip, drip...

As the two powered armors went deeper and deeper, their heavy steps formed a rhythmic cooperation with the regular scanning sound of the energy radar, becoming a mediator to stabilize their emotions.

"The rock structure here is really strange..." The more Sato Yuu observed the surrounding environment, the more he felt as if he was in a natural miracle.

The brown rocks here are all angular and look no different from the various geometric shapes created by humans. Moreover, the place Sato Yu and Douzi are currently stepping on looks like a roofless arched man-made passage. Its structure is the same as the previous two. The difference seen in areas A3 and B2 is not big.

However, it is this characteristic that is very similar to human architecture that makes Sato Yu feel so scared!

"One hundred and fifty meters." Sato Yuo silently recorded the distance traveled by the two since they set off from the point of fall. Since the space in the D4 area is much larger than other areas, there are two disadvantages: no map and low visibility. Factors, Sato Yuo had to be prepared to run back to the point of fall at any time.

Douzi, who was sitting in another powered armor, was not idle either. She was alerting everyone with her big sky-blue eyes while constantly using the visual information collected by the two armors to draw a holographic map.

As of now, the two of them have a 70% complete holographic map in their hands - of course, it is limited to the D4 area that they have explored so far.

"Douzi, do you feel that the sound of the airflow is getting louder?"

When they reached a distance of about two hundred meters, the sound of airflow in Sato Yuo's ears had almost reached the level of a normal breeze, and the air resistance calculation module of the power armor also started operating!

Upon hearing Sato Yu's question, Douzi immediately gave a thumbs up in agreement.

"To be able to generate this level of wind power, the size of the cave entrance must be quite large!" Sato Yu was finally sure that the entrance to the surface could definitely accommodate two power armors!

[Unknown energy activity detected]

Before Sato Yuo and Douzi even had time to celebrate a little in their hearts, the cold and mechanical system prompts made their nerves tense again!

Just when Sato Yuu focused his attention on the energy radar, he suddenly discovered that the red light spot symbolizing the enemy had overlapped with the green light spots of the two people!

"Where..." Uneasiness rose from the bottom of Sato's ambition like a tidal wave. He controlled the power armor and tightened the heavy armor-piercing rifle in his hand. He quickly shook the light source on his body, trying to find out what was hidden in the darkness. risk.

But even though the two powered armors searched their respective areas back to back, they couldn't find any moving creatures!

"Impossible, it's obviously already close to us!" Looking at the flashing red dots in the energy radar, Sato Yuo's heartbeat became faster and faster.

Whether it was the flat area or the space above their heads, the two of them had searched everything, and nothing was missed!

But the real sense of crisis was like part of the air, almost making Sato Yuo breathless.

After hesitating for a second, Sato Yu made a bold decision.

"Douzi, run toward the airflow!"

The logic behind his thinking is simple - if this dangerous thing is nearby but hidden out of sight, then the best way to avoid being attacked is to keep moving!

Following Sato Yu's order, the two powered armors immediately started running in the direction of the airflow!

"Sure enough!" Just as Sato Yue expected, the red dot on the energy radar stayed in place for a second, and then bit behind them at a speed comparable to the two!

The strange thing is that Sato Yu still can't see anything from the rear view module of the panoramic display!

"Damn it, is he an invisible guy!" Although Sato Yu had never encountered a monster that could disappear directly from the sight of humans or cameras, he could not think of any other reasonable explanation!

The next second, Sato Yue realized that his idea was wrong.

Based on the current moving speed of the two power armors, the airflow they create while running has been completely captured by the air resistance calculation module!

In other words, even if the thing chasing behind the two people can hide its figure, it cannot escape the induction of the air resistance calculation module!

But the fact was like a bucket of ice water poured on Sato Yuo's face, because there were only three detectable targets on his screen - himself, Bean, and the airflow the two were chasing!

An inexplicable fear crawled into Sato Yu's ears.

They are racing against a danger that does not exist!