So far, Wu Liang can basically determine several details of this "evil spirit" incident:

First, judging from the current discoveries, this strange tree should be a genuine plant, and there is no evidence that can prove that there is an evil spirit called "Yunyang" hidden in it.

Second, the consciousness of Yang Wanli and the soldier was indeed suppressed and controlled.

They really couldn't recognize Wu Liang and the others, but their bodies were not completely unconscious, these two people had definitely not been to this underground secret passage before, but they were able to find this strange tree accurately, and when the strange tree was harmed, they would receive some kind of imperceptible signal, and wake up from their slumber to drive away foreign enemies desperately.

This is the result of the consciousness that exists within them......

Judging from this, all the changes and actions of the two of them are inextricably linked to this strange tree, even if it is said that the initiator who is now affecting the consciousness of Yang Wanli and that soldier should be this strange tree.

Wu Liang and others did not look for the wrong place;

Third, through the human corpses that have been fused with the rhizomes of the strange tree, as well as the actions of Yang Wanli and the soldier, it can be speculated that the final result of their final death here is to become the "fertilizer" of the strange tree.

This question is well worth scrutinizing......

This seems to be a way to continue life, and even in later generations, there are still many plants that need to hunt live animals for nutrients.

For example: Venus flytrap, pitcher plant, Rafflesia...... And so on and so forth.

After studying these plants, botanists are very sure that they are a kind of plant, which is fundamentally different from animals.

However, it is undeniable that in order to get the nutrients they need, as plants, they can do many "predatory actions" that only animals can do, such as: Venus flytraps can quickly close when insects enter their "shell" leaves, trap them in them and gradually digest them; Another example: Nepenthes can quickly close the lid of the cage when the insect enters its "cage......

These are the "special survival skills" that distinguish them from other plants.

Or rather, it's a survival instinct at all.

Although the special plants discovered in later generations were only aimed at insects, and no similar plants were found to be able to prey on humans, this is still creepy.

Even many film and television works have created many terrible man-eating plants based on this.

However, scientists speculate that the astronomical age of the earth may be as high as 4.55 billion years, and countless animals and plants have been born, grown, evolved, and extinct on the earth...... Who can say that plants with such "special survival skills" have never become masters of the earth?

It's just natural selection.

Some species have long since become extinct like dinosaurs.

Some species have survived through continuous evolution and passed on certain "special survival skills" to survive in this world in a way that suits them better......

And through a series of things that happened to Yang Wanli and this soldier.

Especially when the word "zombie" came to his mind just now, Wu Liang suddenly thought of a species that still exists in the 21st century - "zombie fungus"!

This "zombie fungus" has created an even more creepy phenomenon – zombie ants!

Scientists have shown that when the fungus enters the ant's body, it changes or controls the ant's behavior by releasing chemicals.

The fungus-controlled "zombie ants" no longer have their own behavior and life, and the last stage of their life is also the most painful and terrifying, in the last few hours of life, the "zombie ants" will crawl to the bottom of the leaves where they are, and bite the central vein of the leaf with their jaws? Thus fixing yourself to the leaves? At the same time, parasitic fungi are also locked onto the leaves.

When a zombie ant dies, the fungus takes root and sprouts in the ant's body? Finally burrowing out of its head? And they began to grow spores and continue to infect other ants that passed by......

What is the same situation as Yang Wanli and the soldier? This fungal spores usually do not affect the ant's behavior immediately after entering the ant's body.

Rather, it needs to go through a period of gestation? to be able to release alkaloid chemicals that can control ant consciousness.

And unlike Yang Wanli and the soldier.

The ultimate purpose of the fungus that creates "zombie ants" is to reproduce and spread? And the strange tree that controls Yang Wanli and the soldier should be to obtain the "fertilizer" needed for growth.

So the strange tree needs to summon the "infected" humans back to its side and sleep among its own rhizomes, while the fungus does not......

By comparing the two? Wu Liang had his own guess.

He didn't blame the appearance of Yang Wanli and the soldier on fungal interference? The strange tree obviously does not belong to the category of fungi, and if it is really a fungal spore infection, the two men will definitely be hopeless.

Because the spores are the seeds of the fungus.

After all, the spores will continue to develop and grow into fungi in the bodies of Yang Wanli and the soldier, and whether they will emerge from their heads or chests depends on the fungi's preference.

Wu Liang doesn't have the ability to intervene in this thing? There is no power to prevent this from happening.

And based on his observation of the human corpse next to the strange tree, there shouldn't be a similar desperate situation? The strange tree just looks like it needs people to die honestly in their own rhizomes......

……

Is this a good phenomenon for Wu Liang? It's also a bad thing.

The good thing is that it shouldn't be the spores of the fungus that controlled Yang Wanli and the soldier? In other words, there should be no growing and developing seeds in the body? They may still be able to survive.

And the bad thing? Wu Liang still didn't know anything about the way the strange tree controlled Yang Wanli and the soldier, maybe it was some unknown alkaloid, or some other strange thing that could only be explained by "evil qi".

The spores may still be traceable.

Unknown alkaloids, or things that can only be explained by "evil qi", are really nowhere to be found, and the infection is indiscriminate.

After all, there are not only "zombie fungi" in nature, but also "zombie viruses", "zombie plants", and "zombie parasites...... and so on strange and terrifying species.

These terrifying species each spread in different ways, and target different species, but the end result is much the same, they control the host, change the host, and eventually kill the host in order to achieve their own ends.

Even with the understanding of this terrifying species, people's perceptions and assumptions about many things have changed.

Just a few years before Wu Liang crossed, many zombie films were no longer popular, and the spread of the virus was set as the only way to create a zombie apocalypse, and spore infections, parasitic infections, and so on had appeared one after another......

Wu Liang has reason to be suspicious.

At this moment, they were so close to this strange tree, if the strange tree could really release such an indescribable, invisible, and intangible thing, the four of them should have been infected.

After all, Yang Wanli and the soldier were obviously just passing by, and they unknowingly became "zombies".

And judging from the process of these two people becoming "zombies", maybe just a few hours later, or even in a shorter period of time, they will slowly become the same "zombies" as Yang Wanli and the soldier, and eventually become the "fertilizer" of the strange tree.

"Bang!" "Bang!"

Dian Wei once again forced Yang Wanli and the soldier to retreat.

Yu Ji came over with an old wrinkled face, and asked with a frightened face, "Childe, what should we do now?" You can't just spend it, can you? ”

"Of course not."

Wu Liang nodded, still spinning his brain rapidly.

He was trying to recall the events of this "evil spirit" incident, connecting all the details together, and combining them with the speculation he had just reached......

Now, Wu Liang began to believe that this strange tree was "Yunyang" again.

According to Yu Ji, under every "Yunyang" that has been discovered, hundreds of human corpses have gathered, which may be the "special survival skills" of "Yunyang".

Putting aside the theory of "evil spirits", it is very likely that "Yunyang" is just a plant left over from ancient times.

After all, Germany has found a fossil evidence that is more than 48 million years away from Wu Liang, and traces of "zombie ants" appear in that fossil evidence.

In other words, this "fungus vs. zombie" story may have been playing out on Earth for nearly 50 million years.

And when Wu Liang crossed, it was still being staged.

Then "Yunyang" may also be a special plant left over from that time, or even earlier, which can be regarded as an ancient plant.

It's just that it has been completely extinct in later generations, and even if archaeologists in later generations find it, it is not easy to restore what "Yunyang" did based on those human remains, and they will only think that it is a corpse pit left by human wars......

Leave these speculations aside for now.

Wu Liang continued to connect all the details together and think carefully......

"Ding!"

A flash of inspiration flashed in my mind.

Wu Liang thought of the most critical point, that is, "Yunyang" itself!

Whether it was Yang Wanli and the soldier who lost consciousness, or came here to sleep, and then became a "zombie", these are all inseparable from "Yunyang".

Everything is connected to "Yunyang" in a straight line!

Case.

"There it is!"

Wu Liang slapped his head, this may be the only way.

"What's there?"

Yu Ji hurriedly asked puzzled and anxious.

Bai Jingjing and Dian Wei also looked over, waiting for Wu Liang to make his words clear, in this case, Dian Wei could still use both of his heart and easily block Yang Wanli and the soldier.

"I'm reminded of an old saying."

Wu Liang said, "If you can't solve the problem, then solve the person who raised the problem!" ”

“？！”

Everyone was stunned after hearing this, not knowing whether they didn't understand or couldn't understand what Wu Liang meant.

Bai Jingjing, who was used to being bullied by Wu Liang, couldn't help but ask: "What kind of old saying is this, it's obviously a rogue theory you made up yourself, right?" ”

When you think about it, this is really a fallacy.

And it's a crooked theory that is very in line with Wu Liang's character......

Yu Ji thought the same in his heart.

He has lived for such an age, not only is he well-read, but he is also far more knowledgeable than ordinary people.

The old sayings that he knows that can be passed down are undoubtedly positive chicken soup remarks that teach people to be upright and argue with reason, how could anyone say such a thing, if such a shameless paradox is placed when a hundred schools of thought are contending, the people who teach it will definitely be despised by the people of the world, and those who say such things may be able to leave a reputation for eternity.

But......

Although it is shameless, it seems to be a solution to the problem when you think about it?

It's just that I don't know what Wu Liang means by suddenly saying such a sentence at this moment?

"It doesn't matter if it's an old saying, the important thing is that this may be the only feasible way for us at the moment."

As Wu Liang spoke, he took the torch in Yu Ji's hand, and then walked straight to the bottom of the strange tree, "Since we can't solve the 'evil qi' of this strange tree, why don't we simply burn this strange tree to the ground, and when this strange tree turns into ashes, will the 'evil qi' still exist without attachment?" ”

This is to try to explain his ideas in a way that the people of this age can understand.

In Wu Liang's own thoughts, it is: Since Yang Wanli and the soldier are obviously controlled by "Yunyang", if "Yunyang" is directly burned, the person who raised or created the problem will be equivalent to non-existence, Yang Wanli and the soldier will naturally not be controlled anymore, and the four of them will naturally be exempt from the control of "Yunyang", and all problems will be solved.

"Wait, Childe wants to burn 'Yunyang'?!"

As soon as he heard this, Yu Ji's eyes almost popped out, he had lived for such an age, he had never seen someone as rigid as Wu Liang, if he encountered an evil thing, he would not hide or speak, and he would have a fever if he didn't agree with him?

However, this seems to be a common method of dealing with evil things among the people, but it is not as bold as Wu Liang.

"What, there's a problem?"

Wu Liang glanced back at him.

"No, no problem, it's burned well, and the old man will help you!"

After knowing that "Yunyang" did not intend to let him go, Yu Ji had already begun to break the jar and break it, "The old man also has a pot of fire oil used to dye the torch, which can make the son's fire burn more vigorously, and the old man will see if this 'Yunyang' is more ruthless tonight, or we are more evil!" ”

A moment later.

A few of the torches he had carried with him were already leaning against the trunks of the strange trees and burning.

After the pot of fire oil carried by Yu Ji was poured down, the fire immediately rose a few points, illuminating the underground secret passage that had been illuminated by Hou Zhu's ghostly light like daylight even brighter.

Dian Wei was still fighting with Yang Wanli and the soldier, making it impossible for them to get close to Wu Liang and the others.

Gradually.

The flames of the torch finally burned through the bark of the strange tree, igniting it.

Some sap slowly overflowed from the bark, boiling foam under the scorching fire, and then quickly steamed dry, followed by a very strange sound: "yun-yang-yun-yang-yun-yang--"

"Listen, it's done! It's for us! ”

Yu Ji immediately cheered in surprise and danced like a child.