Steel steam and flame

"Ah..." A sigh came out of Zero's mouth, without any power at all, but it strangely caused the creatures on the cave wall at the entrance and exit of the underground world to react.

Out of instinct, their only remaining perception was on Zero, and they were always paying attention to his every move, as if they knew Zero better than Zero himself.

Instinctively retreating downwards, the sigh itself did not carry any signal, but they felt the danger rising sharply from Zero's body. Violence and chaos were completely at a disadvantage at this moment, and the instincts of the creatures suppressed both. So in the fragmented sounds, the underground world creatures in groups were like waves, but they did not surge upwards, but accelerated to fall towards the bottom of the cave.

The speed was very fast, and in just a short time, the escape behavior spread among the creatures of the entire underground world. Some underground creatures fell directly because of the crowd and could not hold the cave wall, leaving only multiple screams of fear.

Zero watched quietly, and when there were no more underground creatures on the cave wall within his sight, he sighed for the second time.

There was no thought of pursuing further. Zero had not felt hungry yet, and now was not the time to take in food and energy. So in silence, the bioelectric induction field spread towards the entrance and exit of the underground world, and a dozen shining spots suddenly appeared on the cave wall, and there was a faint connection between them.

The next moment, the spot exploded, and the gravel turned into bright molten material, splashing a large area. The rock structure around the entrance and exit was destroyed by the explosion of the spot, and a crack appeared around the cave entrance, making it like a colander. The broken rocks rolled towards the underground world cave, completely blocking the entrance and exit.

The underground creatures will also dig out the gravel blocking the entrance and emerge from the ground again. But this takes time. When they see the light on the ground again and come into contact with the cold rain, it will no longer be Zero standing around and looking at them, but a whole circle of solid firepower network defense lines, and high-yield bombs aimed at the bottom of the cave.

The smoke and dust are slowly floating up, becoming a striking signal, and will soon attract the attention of the patrol team on the front line. Zero was not worried that they would not find it, so he took a step and continued to move towards the battlefront base in his memory.

He needed to get some latest intelligence from there, a new set of clothes, and necessary weapons. Of course, if possible, he also needed to be informed of the abnormal changes on the battlefront. This scorched earth stained with blood and buried with a large number of shells and bones is undergoing strange changes.

It is not clear what is strange yet, but Zero can sense it.

"Generally speaking, this feeling is called intuition." Zero has a solid theoretical foundation and immediately found an explanation, "This change should have lasted for a while. I didn't notice it not long ago, but since I devoured a large number of contaminated dragons and second-class creatures and grew to the fifth stage, the sense of smell of the beast seems to be more acute."

"Is it because I have Mr. Cassia's blood in my body, or because my father Tovelest added a lot of other things to my body, and until now, I have not analyzed it clearly?"

Zero did not find the reason. He chose to put aside his thoughts on similar issues at the right time and instead enjoy the joy of becoming a fifth-stage operator.

What broke this happy mood was the strange change captured by the strong intuition. Indistinctly, Zero realized that the scorched earth under his feet was no longer dead. It seemed to have life at some point, slowly accumulating strength and waiting for its full recovery.

At first, he thought it was just an abnormality in a small area. But after walking across the battle line area of ​​hundreds of kilometers, the strange feeling always existed and did not disappear; afterwards, he attributed the abnormality to pollution. But when he tried to use the bioelectric induction force field to clear the pollution in an area and felt it again, the result was not satisfactory to him.

He had thought about the possibility of microorganisms or bacteria. For example, a powerful second-class bacteria mutated in time and environment and eventually became what it is now. But compared with the corrosiveness of pollution, Zero did not think that any bacteria or microorganisms could survive until now.

Moreover, even if it mutated, he should have felt the strong vitality of this creature, instead of relying on intuition to smell the faint smell like now.

"The root network of the ancient historical world tree from deep underground?" Zero had another guess. Because in his thinking, apart from pollution, only the root network can span a huge range.

While moving forward briskly, Zero continued to deepen his thinking and fill in his own guesses: "The root network has many functions, but one thing cannot be denied, that is, one of its basic functions is to absorb nutrients. Based on this function, too many lives have died on the front line of the giant country. Although many corpses have been recycled and transported away, the corpses of the second-class creatures like blood wolves, as well as the incomplete corpses in the battle, the corpses that have become fragments, etc., are all buried in this land."

"It should not be a wrong cognitive judgment to say that the land on the front line contains shells and metal fragments, and is also rich in nutrients?"

"The nutrient-rich land, combined with the world tree root network that already has life consciousness, will finally breed some strange life forms during the special period of the arrival of the six red stars?"

"Or is it that the strange changes on the front line are just the beginning? As the red star approaches, the changes will become more obvious and affect the entire post-phase continent, and even the three-phase continent?"

Zero stopped walking on the top of a scorched earth slope, his face was confused, but also mixed with joy. He opened his arms, as if hugging something.

"Could this be the sacrifice that my father Tovilest mentioned, the sacrificial ceremony facing the arrival of the six red stars? The movement of the battle line is a precursor, because the land is rich in nutrients."

"What can I do in it?"

Zero squatted down, grabbed a handful of scorched earth and smelled it, and all kinds of extremely subtle smells were captured. The scorched earth was then spread out, and the sight of a blood wolf from the battle line projected from a distance disturbed him. But not wanting to be disturbed, Zero released some breath slightly, scared away the blood wolf with a body length of more than ten meters in the distance, and then sat down on the spot.

"Shouldn't I go back?" He was still talking to himself. "In the database, the size of the blood wolves on the battlefront has remained stable. It is indeed much larger than ordinary wolves, but the data shows that the blood wolves that have reached the fourth stage are only seven or eight meters long, far less than the giant wolf species in various extreme areas. And it has been like this for hundreds of years."

"But in just one or two years, or just a few months, the state that has been maintained for hundreds of years has changed."

"Is it because this is the battlefront?"