The complaints in his heart were complaining, and Wang Xiaotian decided that he still had to ask Ye Zhanjian why he thought that this exploration was too smooth.

For this question, Ye Jianjian answered it like this.

Before the Beast Tide, the wilderness was filled with monsters, deadly radiation, and the whispers of the devil. Due to these factors, human beings are unable to explore the wilderness.

According to several eighth-level grandmasters, even they had never penetrated two hundred kilometers deep into the Great Wilderness.

As a guide this time, Mo Li is only active within a range of 100 kilometers deep into the Great Wilderness.

After the beast tide is over, the biggest threat, the mutant monster, has disappeared, and the deadly radiation can be avoided in advance, only the devil's whispering is difficult to deal with.

But for the Force Masters and Force Grandmasters, the devil's whispers did not affect them much.

So, here's the problem.

The beast tide occurs every hundred years or so, why didn't the previous people think that after the beast tide ended, they would explore the great wilderness?

Is it because you're busy recovering from a disaster?

This argument is too far-fetched. Exploration does not need to be carried out with the strength of the whole country, just some manpower. Now, isn't it different to form a team to explore the Great Wilderness while recovering from the disaster?

Why didn't you do this before?

Or maybe they've done it before, but for various reasons they didn't get anything. But even if that's the case, it has to be recorded.

Such an important action, no matter what happens, should be recorded. Even if it is just a record of how the exploration team members died and how the exploration operation failed, it can be left for future generations to refer to.

Even if the exploration team is sent out, no one can come back, and there will be no gain, and it is said that there should be a record of failed operations. But now, why is there not even such a record?

If this is the case, it can only prove one thing, there has been no exploration of the Great Wilderness organized after the beast tide before.

At least, there is no such formal exploration as this one.

If so, it's even more bizarre. Because, Hu Minghui and Zhang Zijing, the two Force Grandmasters, have also experienced the beast tide last time, why didn't they put forward a suggestion to explore last time, but they put it forward this time?

Why did the two of them quarrel in the middle of the night and even hurt each other?

Also, why did Cheng Yunshi stay in a daze in front of that tree, so that she was attacked by Mo Li? Why did Mo Li do this?

Ye Jianjian's answer made Wang Xiaotian's head suddenly as big as a fight, and his sleepiness was all dispelled by the questions in his head.

He and Ye Jianjian looked at each other for a long time with wide eyes. During this time, he spent some Force power and asked Taling to help him look up a lot of information. I really found the information of the underground world.

Wang Xiaotian sorted out his thoughts and said: "I remember reading some books before, which said that the underground world is prone to ecosystem collapse due to the relatively small number of species, the relatively single environment, and the extremely poor fault tolerance of the ecosystem. ”

Ye Jianjian was stunned, obviously he couldn't understand what Wang Xiaotian said.

Wang Xiaotian had no choice but to patiently explain: "Look, we saw on the way here, that kind of fleshy worm feeds on mushrooms. ”

Ye Zhanjian nodded.

"And those monsters, obviously, can't eat mushrooms directly. But they can eat worms. Their excrement can also be used as nutrients for mushrooms. Mushrooms, worms, and monsters form an ecological chain. ”

"Of course, this is just a simplified ecological structure, and the reality is much more complex than that. For example, a large number of bacteria, microorganisms, insects, etc., are not taken into account. ”

"When there are more mushrooms, worms multiply quickly and increase in number due to the abundance of food. Monsters also multiply quickly because they have plenty of food. The monster's large amount of excrement brings nutrients to the mushrooms, stimulating the growth of the mushrooms. ”

"This creates a cycle in which the three organisms grow simultaneously. When this growth is within the limits of the resources of the Underworld, it is benign. But once the tipping point is exceeded, the entire ecology collapses. ”

"Mushrooms, for example, depend not only on the excrement of monsters, but also on the fertility of the land and the supply of water. And the survival of monsters is also highly dependent on water. The number of monsters is high, and the amount of water consumed is also high, and the mushrooms will not get enough water. Mushrooms will slow down their growth. ”

"When mushrooms slow down growth, worms starve, slowing down growth and reproduction. In this way, the monsters that already exist will not get enough food. The mature individuals among them will either kill each other or try to get out. ”

"I think there's a good chance they'll choose to go out. When they go out, they will be disturbed by the whispers of the devil until they lose their minds and become the kind of monsters that wander in the wilderness. ”

"When a large number of monsters leave, the mushrooms will be able to get enough water and grow rapidly. Worms will also multiply faster due to the increase in food. When the young animals left behind mature, they will also reproduce in large numbers because of the abundance of food. In this way, we enter the cycle just now. ”

Ye Zhanjian looked at Wang Xiaotian dumbfounded. It took him a long time before he reacted and asked, "What do you think?"

Wang Xiaotian shook his head and said, "No." I also saw it from a book from the Old Era. However, the book is about lemmings living in the Arctic. The book says that when the number of lemmings reaches a very high number, they will leave their young, and millions of them will gather together and commit suicide by jumping into the sea en masse. ”

"I think this pattern of lemmings has some similarities with the monsters and strange birds of this underground world, so I made a bold assumption. ”

Ye Zhanjian thought for a while and said, "Your assumption is quite reasonable. If this is the case, then the goal of our exploration this time is to figure out how this underground world came about. ”

The next day, Ye Jianjian asked Wang Xiaotian to tell everyone what he had said last night.

The people were astonished. But after calming down and thinking about it carefully for a long time, I couldn't find any evidence to refute it. So, they deliberated and decided to see how big the underworld really was.

The group continued to walk for more than 30 kilometers and encountered a river more than 10 meters wide.

The appearance of rivers also provides a corroboration for Wang Xiaotian's conjecture.

Crossing the river, they continued in one direction.

After walking like this for more than ten hours, they came across another river. Calculating the distance, they had already walked more than three hundred kilometers, but they still had not found the boundary of the underworld.

The crowd decided to take a break before leaving.

In this way, they walked for a while and rested once, until they rested four times, calculating that the distance had exceeded a thousand kilometers, and still did not find where the border of the underworld was.

However, at this time, they found an island surrounded by a river, and on the island there was a huge, cylindrical, pitch-black metal cylinder!

The metal cylinder is like a cigar, thick in the middle and thin at the end, with a diameter of more than ten meters in the middle and only seven or eight meters at both ends.

One end of the metal cylinder is inserted into the island, and the other end is slightly cocked, and only the exposed part is more than fifty meters long. About ten meters from the top of the metal cylinder, there is a one-man high hole!

The crowd looked at the metal cylinders for a long time across the river, but found no signs of biological activity.

Then the crowd began to deliberate, what to do next?

Wang Xiaotian said: "I think this big guy should be the culprit of the beast tide." ”

Ye Zhanjian nodded, "I think so." What's next?

Sergeant Lu said with some hesitation: "I think there is danger inside." ”

Tuoba Qing said disdainfully: "Why are you not dangerous? Not long ago, we were outside, and we were almost driven crazy by the devil's whispering, isn't it dangerous? Why did you come here for fear of danger?"

Ding Sicong also nodded and said, "I think we should go and see." Isn't the purpose of our coming here to explore the core area of the Great Wilderness? This place is so strange, I think this should be the core of the Great Wilderness. If we don't go over and see, then what is the purpose of our trip?"

Dugu Ying said: "Since most people want to go and see it, then I obey the opinions of the majority." ”

Sergeant Lu was still a little worried: "You want to go and see, that's right. To be honest, I want to check it out too. But don't you think we're too weak?"

Ye Zhanjian nodded and said, "Our strength is not strong enough. But the question is, we have been separated from the two grandmasters for a long time, where can we find them?"

He looked at the crowd and concluded, "Now, we can only rely on ourselves." ”

Sergeant Lu was a little embarrassed. He is a little timid, but the courage and pride of a soldier are still there. Hearing Ye Jianjian say this, he nodded happily: "Okay." Since everyone has decided, I will sacrifice my life to accompany the gentleman. ”

Seeing that everyone had no opinions, Ye Zhanjian said, "In order to facilitate action and take care of each other, let's divide into groups first." I'm in a group with Xiaotian. Colonel Ding and Sergeant Lu are comrades-in-arms, and they have cooperated before, and you are in a team of two. Tuoba Qing and Dugu Ying, you are in a group of two. How?"

It should be said that Ye Jianjian's grouping is very fair. He is the strongest, and with Wang Xiaotian, who is the weakest, others can't say anything. So, after exchanging glances, the others agreed to his plan.

The six of them packed their bags, then crossed the river in groups and felt for the hole in the big black cylinder.

Ye Zhanjian took Wang Xiaotian over first, and the others hid behind to observe, while guarding the surroundings.

Ye Zhanjian reached the bottom of the cave first. He asked Wang Xiaotian to stay below first, jumped up by himself, jumped to the entrance of the cave, hung in the air, and carefully observed the cave.

The inside of the cave was pitch black. However, Ye Zhanjian didn't feel any danger. He stepped and stood at the entrance of the cave, then gestured to Wang Xiaotian and motioned for him to jump up.

Wang Xiaotian jumped directly to the entrance of the cave, took out the wind lantern and lit it, and handed it to Ye Zhanjian. Ye Zhanjian held a wind lamp to illuminate the surroundings.

The cave is not large, the wall of the cave is composed of an arm-thick tube, about two meters high and only one meter wide, which can accommodate one person to pass through.

Ye Zhanjian walked in front of him with a wind lantern, and Wang Xiaotian followed him one and a half meters. The reason why they didn't follow too closely was to prevent that in case of an emergency, both sides would have enough room to move and dodge.

Immediately after, Tuoba Qing and Dugu Ying came up, and then Sergeant Lu. Ding Sicong finally pressed the formation. Before jumping into the hole, he deliberately looked behind him carefully to make sure that there was nothing abnormal, then jumped onto the hole, and then leaned against the wall of the cave, vigilantly observing the outside again, until Sergeant Lu patted him and signaled him to go.

A group of six people, front and back, formed a team more than ten meters long, under the leadership of Ye Zhanjian, walked inside.

The path in the cave is very tortuous, and there are many forks in the road, and it is impossible to accurately judge the specific direction at all.

As Wang Xiaotian walked, he looked at the pipes that made up the cave wall.

Some of the pipes have many strange symbols carved on them, but they are not runes, nor are they the characters of the Eastern Chu Kingdom or the Western Luo Kingdom.

There are also some pipes, which are obviously much newer than others, and I feel that they should have been replaced later.

The group walked for more than ten minutes, and finally walked out of the pipe through a door and entered a passage!

The passage is much wider than the pipes, and there are strips of light on the walls, which illuminate the passage as if it were daytime.

Ye Zhanjian stopped. Everyone stopped, and then looked at him strangely.

Ye Zhanjian frowned and thought for a moment, and said, "Here, it's too weird. It's really out of place with the outside scene. What do you think?"