The winding caves are full of soil. On the soil are layered with layers of liquids of different colors, and a strange smell emits, which is very unpleasant.

"Open the air purification system." The engineer frowned, pressed his fingers on his clothes twice, and his frown was stretched out.

"It's really good, it can also purify the air." Ye Nan said as if he was impressed with envy.

"Garden bun." The engineer did not give Ye Nan any face and bluntly attacked him. "Only you lower civilizations can worship the air purification system so much."

"Yes, lower civilizations like you have developed at the expense of destroying the environment in which they live. Industrial pollution has reached an outrageous level. I really don't understand that you can live so happily in a world full of poisonous gas."

"If it were me, I would leave the planet. Oh, by the way, you can't escape the planet. However, I still recommend that you buy air purification technology and don't always think about buying weapon technology. It's not good to develop abnormally."

The engineer reminded, but his eyes were malicious.

Whether it is silver dollars or military achievements, they are limited. If you invest limited funds in improving the environment, the weapon data will be reduced and your strength will be reduced by one point.

If there is nothing in peace, but when the Zerg has launched a general attack, civilizations with insufficient force will only have a dead end.

Don’t think that lower civilizations can be safe and worry-free. Once the war spreads to the entire Milky Way, lower civilizations will be destroyed first. In fact, in just a few days, two lower civilizations have been destroyed.

In front of the overwhelming Zerg army, apart from the higher civilization, there is still a fight. Other lower civilizations can only end up escaping by looking at the wind. No, there is no chance of escaping by looking at the wind. The bugs will eat civilization and the planet together.

"Well. I'll do it when I go back." Ye Nan nodded, looking at his opinion seriously. In fact, in his heart, he didn't take the engineer's advice seriously at all. He always had the left ear to the right ear to the right ear.

"Actually..." The engineer hesitated, and wanted to say it, but couldn't say it. He found that he had done something stupid just now.

Although he was not very good at Ye Nan's senses and wanted to kill him immediately, he was born with pity for other people in the Human Federation. In order to take revenge on someone, he seemed a bit too much to pull a civilization up.

However, the words have been expressed, and it is still difficult to change them.

"Forget it, if they are attacked by bugs, they will die. Whether they have such a little weapon or not." The engineer made up his mind not to say these words.

"What actually?" Ye Nan asked in confusion.

"Nothing." The engineer turned around, concealing the hesitation on his face, and said, "Let's go, dare to go as soon as possible and collect the source of evolution."

After saying that, the engineer trotted up. Seeing this, Ye Nan followed.

As the cave deepened, the odor in the air also decreased, and the liquid left by the insects was almost impossible on the ground. Instead, it was green ferns.

"The direction of chasing is not wrong. The liquid and odor of the insects disappeared, which only means that these ferns have effects similar to air purification systems." Ye Nan murmured in his heart, and the familiar ferns surged into his heart, making him feel a strange feeling.

He still remembered that on the unnamed planet, the huge fern thought to be alive, withered after the consciousness of the Zerg Lord Harris was eliminated. Now the fern appears again, making him feel strange, as if this living body had hatred for him, it was a feeling, a strange feeling.

"Could this fern have more than life, but also consciousness?" This terrible guess emerged from Ye Nan's heart.

"These ferns are here, so the Zerg commander should be there too." The engineer looked at the ferns on the ground, and their faces hidden under the transparent shield became heavy. With his hands with thick white space gloves, he grabbed a fern and reminded, "Be careful yourself and don't be eaten by this thing."

"Eat it? Could it be that this plant has life?" Although he had known the answer for a long time, Ye Nan pretended not to understand anything in order to obtain information.

"Of course it has life." The engineer said in a deep voice: "No one knows its name for this thing, but everyone knows that it is one of the food sources of Zerg. Like Zerg's fungal blankets, it provides energy for insects. The difference is that the fungal blankets provide food for newborn insects, and this thing provides energy for adult insects."

"It can secrete a liquid that can erode all ores, metals and other substances, and basically no substance can resist its erosion."

"Once it is eroded by its liquid, it will become a nutrient for the liquid, and this liquid contains a lot of energy. If the insect eats it, it can move for at least half a month."

"In legend, as long as it is given enough time, it can absorb the entire planet."

"So how should we destroy him?" Ye Nan asked.

Although he had long admired the dangers of this fern, he still underestimated ferns. These ferns are not only the logistics of the Zerg, but also the killer weapon of the Zerg. Think about it, the Zerg occupied a planet, and humans were about to take back the planet at any time. Even if they could not be taken back, they could still use weapons of mass destruction such as Q bullets to clean the battlefield.

But once the ferns take root and sprout and do not kill them in the future, the entire planet will be turned into nutrients and disappear from the universe.

Ye Nan suddenly heard the Zerg and humans engaged in a tug-of-war. Now it seems that they should be preparing for ferns to devour the planet.

The development of human civilization requires all kinds of ores, and if Zerg wants to develop, they need energy. Their dispute is essentially a battle for the planet. The Zerg unknowingly implants the seeds of ferns into the planet and digests the planet. However, the human federation does not know that it only knows that it only competes with insects for the surface on the surface. No matter how you look at it, you will feel a little sad.

"Find its roots and kill it." The engineer looked somber. "The roots of ferns are usually deep in the underground lava, but your civilization has no other way to kill it except the planet destruction cannon."

After pausing, the engineer said, "When I gather the source of evolution, I will help you eliminate ferns."

"Can you tell me what method to kill it?" Ye Nan asked with a shy face. He decided to use the Zerg to kill the engineer. Naturally, he couldn't wait for the engineer to help him eliminate ferns and eliminate the harm of ferns, so he had to ask for a method and do it himself.

"It's very simple, virus." The engineer pressed the protective suit a few times, then reached out and grabbed it, and grabbed a bottle of transparent potion. "Just throw this on the fern, it can corrode it and make it wither. However, it must still be at the core of the fern to kill it, otherwise it will only alert the snake and let it die for survival."

The body of a fern is not big or small. It takes a certain amount of time to use viruses to erode its body. At this time, it can completely cut off its tail and survive, abandoning part of its body in exchange for survival.

"This thing." Ye Nan grabbed the bottle with a shy face, put it away, and carefully placed it.

Seeing Ye Nan's actions, the engineer immediately sneered, "Do you want to kill ferns by yourself? Dream."

"I just want to leave it to the Human Federation for research." Ye Nan casually found an excuse to perfunctorily treat the engineer.

The engineer laughed as if he heard a big joke, "Study? With the pitiful weak virus technology of your human federation, you also want to study the viruses of our Prometheus people? Ridiculous?"

"Even if you can't study it, you can still collect it. It's always a good thing, right?" Ye Nan didn't care about the engineer's ridicule. He is not a human federation. The space-time empire has always had outstanding success in the field of viruses. Not to mention anything else, the virus developed based on the T virus as the prototype has been born. I don't know how many generations of this data, even the emperor of the space-time empire, is not clear about this data.

"You want to say you took advantage, right?" The engineer's face turned green all of a sudden. He felt like a jumping clown, saying something he thought was very proud of, but in fact others were too lazy to even pay attention to.

"It's true." Ye Nan said proudly: "This thing is sold on the Internet, and it will probably be sold at a high price."

"It's actually very low value," the engineer said. "It's actually just a virus specifically targeting ferns and has no research value at all."

In order to crack down on Ye Nan, the engineers even belittled their own viruses.

"It doesn't matter, it's just for nothing anyway, don't be for nothing." Ye Nan shrugged and said with a relaxed look on his face.

"You..." The engineer was so angry that he couldn't feel at ease when he was so angry that he became more and more angry as he thought about it. An unknown anger burned in his heart.

"Give me my virus back."

The engineer reached out and tried to catch the virus and bring it back. However, Ye Nan, who was prepared for a long time, shrank his hand, avoided the engineer's hand, and said, "Can they all be stingy?"

For him, the virus was a surprise. Whether it was used to corrode ferns, erase it from the planet or bring it back for Dr. Asceford to study and enrich the T virus system, it might also create a brand new virus.
Chapter completed!