Lu Yuan was already shocked by what he had only thought of.

So much so that some of his hopes destroyed.

Just as Lu Yuan had always said before - don't try to seek the truth about the sun's extinguishing, and make efforts to create an ark for mankind that can survive disaster.

But now, even if you don’t want to know, part of the real reason why the sun is extinguished has been presented to you, so that you must face it and welcome it.

Lu Yuan sighed, forcibly suppressed the fluctuations in his heart, and then continued to look down.

There are some earths below.

Some different earths.

The earth carved on this bronze door is basically the evolution process of the earth over the past 4.6 billion years, until the birth of mankind is unknown.

But Lu Yuan suddenly noticed that even when the locations of the modern earth, that is, the seven continents, are exactly the same as those of today, there are still many blanks under the Bronze Gate, and a lot of content is waiting to be filled in.

Perhaps it is possible that after humans become extinct, other organisms evolved on the earth will fill the ecological absence of this part.

I don’t know when smart creatures will be re-evolved, but judging from the mice and bats seen in this crypt, at least there are still a considerable number of lives that can survive here, waiting for the day when spring blooms hundreds of millions of years later.

Of course, it may be the world dominated by robots produced by the mechanical pioneers?

When Lu Yuan was thinking this way, Su Mei pointed to the bottom of the bronze door: "Look at where, Lu Yuan."

Lu Yuan followed Su Mei's pointing and looked down. Under the many earths, the bronze gate was only about one meter five from the ground, and saw a pair of circles.

Since the Doomsday Mecha is a bit taller than five meters, it is really hard to see the circle at its knees.

This is probably the trouble of the giant.

"I feel a little bit like that there is the mechanism for opening the door." Su Mei continued.

Just now, Lu Yuan had already used the Vulcan cannon to bombard the bronze door in all directions, but he ended up finding nothing.

Maybe the pair of circles at 1.5 meters is the key to opening the bronze door?

After all, we have to consider how Roland's expedition found the bronze door and entered the bronze door after it.

From the moment, it seems that it doesn't look that dangerous before the bronze door.

But Roland's team was wiped out at the Bronze Gate, which seemed very strange and terrifying.

"Wait first." Lu Yuan said: "I'll try it with a vacuum cutting knife."

The vacuum cutting knife uses high-speed vibration of the blade to produce a cutting effect that ignores the texture. Of course, ignoring the texture is a bit exaggerated, but cutting from the molecular scale is more important than cutting.

Although the Vulcan cannon has no way to do with this bronze door, the vacuum cutting knife may not be.

"Okay." Su Mei nodded, she took a few steps back and watched Lu Yuan pull out the sharp white long sword that emitted a glimmer from the spare arsenal.

This weapon has now become almost the most iconic weapon to come tomorrow, but its killing effect has always been at the first echelon.

"I'm going to go." Lu Yuan took a deep breath. The vacuum cutting knife was still of normal size. It was a long sword for normal people, but in Lu Yuan's Doomsday Mecha's hand, it was almost the same as a small dagger.

He pressed hard and stabbed straight towards the bronze door.

Generally speaking, even when facing diamonds, a vacuum cutting knife can easily penetrate, just as easily as piercing into butter.

But at this moment, the crackling sound echoed in the cave.

The first section of the vacuum cutting knife was shattered at the moment it touched the bronze door.

Then as Lu Yuan continued to penetrate, he heard a crack, just like eating a biscuit. A 1.6-meter-long Taidao blade in Lu Yuan's hand was broken in front of the bronze door.

Although the atmosphere was a bit serious, Su Mei couldn't help but burst into laughter.

Because it looks so funny.

Lu Yuan couldn't help laughing: "It's really worthy of being something made by aliens."

"If this bronze door could be found in modern times, I would really not be able to help but study it carefully."

However, if we contact the strange phenomenon of this cave, it is probably very difficult to discover and open the cave in reality.

After all, this world with this bronze door would not open until the special moment.

"But now what we need is to try to open this bronze door." Su Mei said, "If you don't mind, can I try it first?"

Lu Yuan nodded: "What are you going to try?"

"Just try this." Su Mei said, squatting down the tall Doomsday Mecha, then half-kneeled on the ground, stretched out a finger, and gently touched the circle.

At the moment of touching it, Su Mei let out a "ah" and seemed to feel something. She spoke loudly: "I understand!"

"What do you understand?" Lu Yuan asked.

Su Mei shook her head: "You try it yourself. If you want to know the taste of pears, it is the right way to try it yourself."

Lu Yuan nodded silently, and then he also controlled the Doomsday Mecha to squat down his heavy body, then stretched out his fingers and pointed at the circle under the bronze door.

At that moment, I felt an electric current penetrate my body instantly, and Lu Yuan also said "ah" in a very unreliable way.

But at the same time, he also felt the message conveyed by the current.

This information does not belong to any language, but for some reason, Lu Yuan can understand it in an instant.

It's saying.

"Cover the hands together."

This is roughly what it means, although what if the smart creatures who came here don’t have hands?

So probably covering the hooves?

In short, that's roughly what it means.

"So that's it." Lu Yuan sighed softly.

"Can you believe it?" Su Mei asked.

"We can't lose all our efforts for the mountain." Lu Yuan sighed: "We have already reached this kind of thing. If we leave without looking at anything, we would be too unwilling to accept it."

Su Mei nodded.

Because there is nothing to hesitate, since I have arrived here, if I go back, I will just sit in the ground-effect aircraft like John Smith.

The two walked out of the Doomsday Mecha together, because it was obvious that the bronze door did not recognize it through the touch of the mecha.

I have checked the air here before, and the oxygen content meets the standards and the air is a little hot. The only disadvantage is that the sulfur dioxide concentration is a bit high. Lu Yuan and Su Mei have filtered respirators, but the heat here surprises both of them.

The breathing became a little heavy.

"I didn't expect to come to such a hot place." Lu Yuan sighed, stretched out his hand to hold Su Mei together, and his other hand was freed up.

"Let's start?" Lu Yuan said.

After Su Mei nodded, the two of them held hands with each other while placing the other hand on the circle of the bronze door.
Chapter completed!