When Lu Yuan heard Su Mei's shouting, he quickly moved towards Su Mei.

But it is worth being happy that although Su Mei's voice was very surprised and urgent, there was not much fear in it, which means that Su Mei was not in danger.

In fact, the two people were not far apart. With the maneuverability of the Doomsday Mecha, they basically moved there in twenty seconds. However, when Lu Yuan saw what appeared in front of Su Mei, he was shocked and almost naturally spoke: "Oh my God."

Under the lights of the Doomsday Mecha, they all discovered a huge bronze door that almost blended with the wall.

Yes, when Lu Yuan saw this door, he almost naturally named it the bronze door.

Because this is a door full of bronze metallic color, so that the large cubes appear very natural.

However, Lu Yuan and Su Mei had undergone metal testing before, and no metal reaction was detected here, which also shows that the material of this door is completely different from the bronze familiar to humans.

In a sense, it is more appropriate to treat this door as stone or jade.

At least it is definitely not bronze.

This door is ten meters high and five meters wide, and is extremely tall. Compared with other things here, this door is full of traces of human creation, or at least traces of civilization.

And is Roland really spending time with such a bronze gate every day?

Has he opened the bronze door?

For a moment, all kinds of thoughts flew in Lu Yuan's heart, so that he stopped thinking.

"Look at the sculptures on it." Su Mei said softly in the communication channel.

Lu Yuan was reminded by Su Mei and began to look at what was carved on the bronze door.

At this glance, he was shocked.

Although Lu Yuan was shocked a lot today.

But the key is that everything we see here is a bit beyond the long journey of trying and imagination.

At the top of the bronze door is a vast star map.

This star map is spiral, with four huge spiral arms, which can be clearly identified from a long distance. The star map shows the shape of the Milky Way.

And in the corner of the cantilever of the star map, there is a small box. Below the box, after zooming in, Lu Yuan clearly saw the appearance of the solar system.

Here are the eight major planets in the solar system, including the Sun, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, asteroid belt, Pluto and other dwarf planets around it, and the Kuiper belt outside it.

The engraving techniques of these images are extremely exquisite and concise, with fibers appearing in the subtleties, but there is no lyrical writing.

In front of the distance, these images carefully depict the shape of the Milky Way, the composition of the solar system, including the size ratio and shape between planets, and even the position of each asteroid, are clearly displayed on this mere 2D image.

"I feel that this engraving technology has already surpassed our realistic technology." Su Mei said.

Lu Yuan nodded.

The Transportation Commission has reminded him that the accuracy of the star map on this bronze door has far exceeded the accuracy of the star map mastered by humans. After all, compared with the sea of ​​stars, humans are closer to liking in front of them and under their feet.

For example, the description of the solar system, this star map accurately depicts the trajectory of each star body, as well as the distance and size ratio between planets in the position of the asteroid. Because the proportion of the sun and other planets is unbalanced, in general, most images depicting the solar system are at a relative level, that is, efforts to present different star bodies in a suitable size on a graph.

This star map is completely realistic and has the right size ratio.

Lu Yuan once watched a science fiction movie called 2001 Space Odyssey. This movie teaches an ancient and unknown mysterious civilization, using huge black stone slabs to study everything in the universe. If possible, they will also promote the evolution of intelligent life.

In the movie, three million years old ancient Africa, a group of primitive humans faced a survival crisis such as food and water sources. A transparent and shiny stone slab descended from the night sky, teaching them to use tools and hunt with fantastic sound and light effects, thus developing the wisdom of ancient humans, allowing them to reproduce and survive on the earth and dominate the entire earth.

In the midst of the story jump, humans have entered modern times. While exploring the moon, they discovered a strange area with a strong magnetic field source, where they successfully discovered an identical black stone slab.

This black stone slab is ordinary, but it does not belong to any known material from humans.

If this is nothing, then the eyes of this black slab will shock everyone next, because it is impossible to confirm the age of the black slab. However, the length, width and height of this rectangular black slab are 1:4:9, or 13 cubic meters respectively. As well as measuring using instruments of any scale, even to the nano and atomic scales, we can see that the atoms of the black slab are closely arranged and properly arranged, and their proportions are still terrifying 1:4:9.

In a sense, this is itself a display of unscrupulous and arrogant power.

All human science and technology and achievements are overshadowed in front of this ordinary black stone slab.

Now, Lu Yuan has witnessed another similar and equally shocking remnants of civilization.

The civilization that created this bronze door was basically confirmed by the long road, and they would definitely not be humans.

Although at present, this bronze door does not show any incredible technology. In front of Lu Yuan and Su Mei, it is a huge bronze door with various patterns engraved, but the accuracy of the Milky Way and the solar system star maps it depicts, as well as this unknown hard material bronze door, made Lu Yuan and Su Mei feel extremely shocked.

"I want to make an attempt." Lu Yuan suddenly said to Su Mei.

Su Mei was shocked by the simplicity and depth of this bronze door. When she heard Lu Yuan's words, she couldn't help but be stunned: "What's the attempt?"

"I want to try to attack this door." Lu Yuan said: "For example, shoot it like that."

As he said this, Lu Yuan raised his Doomsday Mecha's Vulcan cannon.

The dark muzzle pointed at the bronze door.

Just like the collision between primitive and modern.

Su Mei was surprised. She was a little incredible. Then she understood Lu Yuan's intention after a moment.
Chapter completed!