The confusion in Su Yichen's eyes gradually faded, and he looked up at the fern tree in front of him again, and then carefully looked at the other trees in the forest.
Among these trees, there are magnolias, willows, maples, poplars, birches and even palms that he is familiar with.
However, compared with the outside world, these trees all appear to be particularly tall and lush.
Of course, in addition to these, there are many plants similar to the fern tree in front of you.
Although some of them look different, the obvious characteristics of ferns can still be seen from the shapes of leaves and roots.
His eyes gradually moved from the forest to the grassland, and then looked into the distance.
Although Su Yichen didn't know how big this place was, at least he couldn't see any edge in his vision.
If this place was really created by man, then who had the incredible ability to build such a vast place underground?
In this world, there is the sky and the sun, which is almost the same as the outside world.
Where do they come from?
What is the use of this place?
Countless answers formed a puzzle, with countless clues but almost no clue.
Neither Su Yichen nor Wan Changchun could reasonably explain these questions.
At this time, the delusions that had flashed through Su Yichen's mind and that he had previously considered unrealistic suddenly popped up again.
"Are you talking about prehistoric humans or aliens?"
Wan Changchun couldn't help but frowned after hearing Su Yichen's hesitant idea.
"Teacher Wan, I know it's unscientific to say this, but judging from the current situation."
Wan Changchun is a very rigorous scholar.
Seeing him frowning deeply, Su Yichen thought that he was concerned about his "nonsense" Somewhat unhappy, he quickly tried to explain.
Who would have thought that Wan Changchun raised his hand and interrupted Su Yichen: "No, although we who engage in scientific research need to use science as evidence, it is not impossible to make bold assumptions under certain circumstances.
In fact, Xiao Su, your guess is also the same What I have thought about is that everything we have encountered since we discovered that strange building in the outside world is almost impossible to explain it with current scientific theories.
So, we must break out of the original circle and start from another perspective.
A perspective, or even a bolder guess, to look at the problem.”
"Teacher Wan, do you think that guess is more likely?"
Wan Changchun thought for a while and then shook his head: "It's hard to say, I can only say that it is possible.
Of course, maybe the final answer will be different from our guess, but at least these two guesses can temporarily explain these problems. " Su Yichen nodded slightly, agreeing with Wan Changchun's point of view.
If this hypothesis is used to deduce, then there are two possibilities for where they are now.
The former is a relic left by prehistoric humans, which can explain why plants that have become extinct in the outside world are produced here.
Another possibility is that aliens built a biosphere-like place here, which could also explain this problem.
But the more critical issue is that both possibilities have flaws.
The biggest flaw is why there are no animals except plants in this place, because no matter which way you judge it, even if prehistoric humans have become extinct, or aliens have left here, then at least animals will continue to reproduce in this place, and Now, except for the plants that catch the eye, there are no signs of any animals.
If it was due to some natural disaster, then this place should be completely destroyed, and it would not be like this.
This problem also troubled Wan Changchun, and unlike Su Yichen, he had also studied the two giant trees before Su Yichen came.
The size of these two giant trees really shocked him, because he couldn't judge at all.
What kind of trees are these two giant trees?
Its size and height are unimaginable.
According to literature, the largest tree on earth is a giant sequoia in California, USA.
This giant sequoia is 100 meters high and has a trunk circumference of 341 meters. meters, the tree is about 2100 years old.
Compared with this giant sequoia that has been recorded in human history, these two giant trees are only worse.
Wan Changchun had made preliminary calculations before and found that the trunk circumference of the two giant trees exceeded 120 meters.
As for the height, it was at least several times that number.
The age of the trees could not be tested for the time being, but it would not be short.
Moreover, Wan Changchun can conclude that these two giant trees are definitely not fir trees, let alone banyan trees.
Judging from the characteristics of their trunks and leaves, they seem to be a type of tree species that has never been seen before.
There is also a tree on the tree.
Free novels bring you joy and joy ---> storyskyline.net
A strange red fruit that he had never seen before.
For a moment, both Su Yichen and Wan Changchun were silent.
They each frowned, trying to understand all this and find answers to these questions.
Seeing them like this, Hu Zhijun on the side became a little anxious.
He had been delayed a lot since encountering the wolves along the way, and even lost Guda Mai's life in the desert.
He didn't want to get out as soon as possible, but instead Here he was thinking about inappropriate food and drink.
He really didn't understand why the experts' heads were different from his own.
Originally, Hu Zhijun didn't want to rush, but time waited for no one, and he was worried about the mission and finally couldn't help but ask.
"How to leave?"
Wan Changchun was stunned after hearing Hu Zhijun's words.
Hu Zhijun didn't know whether to laugh or cry: "Lao Wan, you are still a great expert.
Didn't Xiao Su just say that he came through a passage on the fork in the road?
Maybe the other passage is the way out."
"Yes."
Wan Changchun's eyes lit up.
However, what he immediately thought of was somewhat different from Hu Zhijun's.
Hu Zhijun planned to find a way out through another passage, while Wan Changchun also considered whether he could find a way out through another passage.
Find the answers that explain it all.
At the same time, Su Yichen also thought of this, and looked a little excited.
The three of them quickly packed up, and Su Yichen led the way back to the passage.
After a while, they came to the passage hidden behind the rocks by the lake.
When dialing When they opened the vines and saw the passage, both Wan Changchun and Hu Zhijun were amazed at the faint green light inside the passage.
Su Yichen took the lead, Wan Changchun followed, Hu Zhijun walked at the back, and the three of them entered the passage one after another.
After walking forward and turning several turns, Su Yichen finally returned to the previous fork in the road.
At this time, the room was still the same as when he left.
Pointing to the room, Su Yichen told Wan Changchun that they came down from there.
If his guess was correct, this room was probably like an elevator.
Lift device, through which can lead to the passage directly to the pyramid and square.
Standing at the door of the room, Wan Changchun did not walk in, but took a closer look.
In his opinion, although the pyramids and squares described by Su Yichen are strange, they are not as attractive as the possibility of secrets in another passage.
Now, let's explore the untravelled passage first, maybe it will bring them surprises.
When entering another passage, Hu Zhijun insisted on taking the lead because he believed that since this passage had never been walked before, there might be some danger.
For the safety of the experts, it was most appropriate for him to explore the path.
In response to Hu Zhijun's determination, Su Yichen and Wan Changchun could only agree.
In this way, Hu Zhijun entered the passage first and asked Su Yichen to keep some distance from him.
The three of them gradually groped towards Qiang.
It was almost the same as the previous passage.
There were also many curves in front of it.
As I walked further in, I didn't encounter any dangers along the way.
Gradually, the hearts of the three people slowly relaxed, and when they turned another corner, Hu Zhijun, who was walking in front, suddenly stopped for some unknown reason, and then quickly stepped back a large distance.
Su Yichen, who was following closely behind, didn't pay attention and almost bumped into him.
"What's wrong, Old Hu?"
"Be careful there is someone in front of you."
Hu Zhijun pushed Su Yichen back, ducked sideways, and at the same time took out the pistol that had been stuck in his waist. aa2705221: