Global Invasion: Only I Know the Future

"Let's use the method just now. There must be only one of these two doors that can enter."

But Chen Jiannan felt that it was not that simple, but he still took out a candle and lit it at the door.

When he put the candle in front of the first door, he found that the candle in front of this door was blown by the wind from the door.

With a smile on his face, it seems that this door can still be entered.

Chapter 310 Civilization Dating

But when he put the candle in front of the second door, they were surprised to find that the candle in front of this door could also be blown by the wind blowing from inside the door.

for a while.Both of them were a little confused, what's going on?

However, Chen Jiannan quickly realized that, as expected, the two doors were really not that easy to pass through.

Wu Tianyu was also stunned when he saw that both doors could be entered, and then he came back to look at Chen Jiannan.

"Jiannan, which door shall we enter?"

"I really don't know about this. There is air circulation through the two doors, which proves that there is a way out behind the two doors."

"But how could the people who excavated this cave come up with such a design?"

"I do not know!"

Chen Jiannan shook his head, looking at the dark cave behind the two doors, he also hesitated.

At this time, Wu Tianyu was staring blankly at the door on the left, and seemed to see a figure floating by from inside.

Seeing this figure, Wu Tianyu came back to his senses, and quickly pointed to the door on the left, "Jiannan, did you see a figure floating past here just now?"

"Shadow?" Chen Jiannan quickly looked towards the door on the left, "No, are you dazzled?"

"Perhaps so, but I think we should go through the door on the left."

"The door on the left?"

Chen Jiannan compared the two doors and found that there was no difference between the two doors, but he still nodded.

Because he thought that Jiang Mu and the village chief had told him that the saint's perception ability is the sixth sense intuition is very powerful.

Anyway, the two doors are similar now, so why not just listen to the saint and go directly to the door on the left.

So he walked into the door on the left first, which was no different from the other roads he had just walked.

However, it was much colder inside than the way we came here just now. After confirming that there was no problem in the cave, Chen Jiannan waved to Wu Tianyu.

"Saint, it's safe inside, come in!"

"Ok!"

Saintess Wu Tianyu nodded, and followed Chen Jiannan into the cave.

But when the two of them just stepped into the cave, there was a sound from the gate behind them. They turned their heads and shone the flashlight on the stone gate, and found that the stone gate had been quickly closed.

"Not good!" Chen Jiannan wanted to drag Wu Tianyu out quickly, "Shimen is about to be closed."

But before they could move, Shimen was directly closed.

Both of them were dumbfounded now, Chen Jiannan was stunned for a long time before slowly opening his mouth, "How do we get out?"

"Why is this door closed? Could it be that we entered this stone door and triggered some mechanism?"

"I think it should be." With that said, Chen Jiannan directly pulled out his Ice Soul Flame Knife.

There was still a faint blue flame on it, and this was the first time Wu Tianyu saw Chen Jiannan take out this Ice Soul Flame Knife.

She was very surprised, "Where did you draw it from?"

"Eh..." Chen Jiannan definitely couldn't say that this is the storage space of his own system, so he panicked, "This knife is shrunk, new material."

"I see."

Wu Tianyu didn't delve into it either, the most important thing now is to open this door, otherwise if there is a dead end ahead, then they will be trapped here and never get out.

Chen Jiannan charged up his Ice Soul Flame Knife, and then aimed it at the stone gate.

I saw sparks from the contact between the Shimen and the blade, and with the disappearance of the sparks, the door was not damaged at all.

This made Chen Jiannan a little desperate, even his own Ice Soul Flame Knife couldn't see through this stone door.

It seemed that this was definitely an ordinary stone gate, and he even wondered if the gate was made of stone.

Because his Ice Soul Flame Knife cuts iron like mud, it is still easy to cut through a stone door.

So he took a closer look at the stone door, and suddenly smelled a strange smell on the stone door. This smell was very peculiar, it didn't smell like stone, but the smell of some other special material.

This smell surprised Chen Jiannan, he looked at Wu Tianyu with some surprise, "This door is not made of stone."

"What?" Wu Tianyu was also taken aback, "It's not made of stone, what is it made of?"

"I don't know what it is made of, anyway, it must be some kind of alloy material."

"Alloy material?" Wu Tianyu was even more astonished, "Aren't you kidding me? This door has existed for at least 5000 years. At that time, let alone alloy materials, even various metals were difficult to get out."

"You can't say that. When we first entered the cave, didn't those iron arrows mean that humans here were able to make iron more than 5000 years ago?"

"So, at that time, the humans here were already highly developed enough to smelt various metals?"

"I'm not sure if they can smelt all kinds of metals, but what is certain is that they must have mastered some kind of alloy making technology."

"My God, is this something that people did more than 5000 years ago?"

change

It was difficult for everyone to accept. At that time, people were still in a tribal state, and they all used mud, stone, or wood as tools.

It is really incredible that people who use these things can invent modern metals like alloys.

Moreover, the door was smooth and well-crafted. Chen Jiannan was very puzzled now.

How did people make these things more than 5000 years ago?

Not to mention this alloy door, just this cave. For people who did not have large excavation tools at that time, the labor required to dig such a cave was absolutely unimaginable.

At that time, did there really be so many labors to dig such a cave, and there can still be organs like this in it?