The deep sea is lonely, cold and dark. A giant pyramid 300 meters high stands quietly at the bottom of the sea. Suspended at the base of the pyramid, looking upwards, the huge stone steps go all the way up into the deep water that cannot be seen, and the top is not visible at all, which is very impressive.

Countless megaliths have been cast into this miraculous structure, making it still majestic countless years later. There are few gaps between the boulders, and the construction techniques are very exquisite.

"It's an incredible building." Su Xia sighed, he had never been to the pyramid on the other side of the earth, but had only seen the relevant video on TV.

The behemoth in front of him shocked him much more than the pyramids in the video.

"If it's really an energy tower, then there must be a special emitting device inside, it won't be a pure stone building, you have to find a passage......" After Su Xia gave the command, the more than ten small deep-sea exploration robots dispersed, and launched a detailed search around this huge building, trying to find a passage that could lead to the interior of this building.

Even if it's not an energy tower, it's just an ordinary tomb or sacrificial temple, there should be a passage or something.

On the other side of the planet, the famous Pyramid of Khufu, there is a road to the interior, and it is open to tourists.

"You want to go in?" The big whale suddenly sounded.

"Hmm." Susha replied.

"Why are you making all this trouble?" The big whale asked,

"Just these more than ten robots, how long will it take to find them? Your submarine is so big, doesn't it have any exploration devices? ”

"That's right, you reminded me." Su Xia laughed, patted her head, and immediately turned around and looked at Sarah beside her.

Sarah smiled slightly, waved her hand to present an image, and said to Su Xia, "Captain, it's already being explored. In the picture she presented to Su Xia was a three-dimensional pyramid structure that was constantly changing, sometimes becoming an image of different shades of color similar to that of an infrared detector, and sometimes becoming a pure line pattern.

This large submarine carried quite a few exploration devices, which combined with each other to form a composite exploration system.

"Captain, this exploration system is additionally attached to your submarine, and the rest of the standard submarines are not carried, your submarine is actually an upgraded version of this model......" Sarah briefly introduced this exploration system to Su Xia, but Su Xia basically didn't understand.

The only thing he understood was μ detection. μ, Su Xia first learned about this thing when he learned about the special theory of relativity, which is a standard particle with a negative charge and a spin of 1/2, which can be used to verify the shrinkage effect and prove the existence of special relativity.

As a college student who likes science fiction, Su Xia basically knows a little bit about this aspect. He knows many physics formulas and famous experiments, but he doesn't know much, he doesn't understand them in depth, and he can usually use them when he brags with a few roommates, and he can harvest a wave of adoring eyes.

Su Xia's specific theoretical ability may not be as good as that of the group of demons in the Minke Bar. As for the μ detection that Sarah is talking about, it is another application of this particle, which is relatively high in energy and can pass through large volumes of absorbing objects with very little energy loss.

Its trajectories are very different as it passes through different media, so the basic structure inside this pyramid can be judged.

"How long do you have to explore?" Susha asked.

"Captain, if it's just pure detection, it may take more than ten days to get the approximate internal structure." Sarah smiled.

"So long?" Su Xia was surprised, he really didn't know anything about this.

"Yes." Sarah nodded, her tone more serious, but she then said, "If you just want to find a few passages, it's easy, and now you've found the entrance to a passage." ”

"Oh? Where is it? Su Xia's spirit was shocked and he immediately asked.

"...... here," Sarah pointed to the picture in front of her, pointing to an ever-changing blue band of light, which existed prominently in the interior of the three-dimensional pyramid structure image.

Its exact location is located at the base of the pyramid on the right side.

"Here? I remember it seemed to have searched just now. Su Xia frowned slightly, and immediately sent a small robot to scout over to try to find the entrance to this passage.

However, after the little robot arrived, the feedback picture was still a giant long strip of stones weighing several tons or even dozens of tons, with a thick layer of seabed dust accumulated on the stones, and there were almost no gaps between the stones, and there was no passage entrance at all.

"Is the entrance blocked by stones?" Su Xia thought about it, it seemed that there was only this possibility.

"Do you want me to help you?" The big whale asked suddenly.

"How can I help?"

"I can spit out a few energy bubbles, control the force, and help you explode the stone blocking the passage."

"Really? Thank you very much. ”

"No thanks." The big whale came from a curious mood swing, and said: "Actually, I also want to know what is inside this big pyramid, I even thought about knocking it open directly, every time I see this pyramid, I have this thought, but I am afraid of smashing the things inside, so I restrained it and have endured it for so many years." Hearing this, Su Xia frowned, he thought that this big whale really had no interest in all kinds of mysteries under the sea.

Now it seems that he is not without interest, but he has explored everything he can explore, and only the most mysterious part is left and there is no way to contact it.

Admittedly, judging from the huge body of this big whale, if he intentionally collided, he would probably really be able to knock the giant pyramid in front of him open, unless the pyramid was solid.

"Get out of the way of your little robot, I don't want to get hurt by mistake." The big whale said.

"Okay." Su Xia sent an order, and the little robot near the entrance of the passage immediately retreated and retreated to a hundred meters away.

At the same time, the rest of the little robots that were exploring around the pyramid also retreated. Su Xia was worried that the big whale would not be able to control the strength well, and he was afraid that his energy bubble would cause the pyramid to collapse, so he withdrew these little robots in advance.

He didn't want to let these precious little robots have problems here, even the loss of one would make Su Xia's heart ache.

"Attention, I'm here." News from the big whale. Then, his huge mouth opened slightly, as if a dark abyss had opened in the deep sea, setting off a hidden undercurrent.

The slightest movement of a giant creature like him can trigger a series of chain reactions. Immediately after, a head-sized energy bubble gently floated out of his mouth.

Through the vision of the little robot, Su Xia saw the appearance of this energy bubble.

"I see, it's about concentrating the chaotic energy in one point and letting it explode, similar to a psionic bomb." The energy bubble, glowing dangerously dark blue in the silent waters, like a crystal ball about to crack, slowly approached the huge stone at the entrance of the passage.

Under Su Xia's gaze, the bubble touched the stone slightly, and the energy film on the surface was slightly deformed, and it seemed to be a little soft.

Moments later, the bubble popped! With a bang, the energy exploded, the sea water was disordered, and the huge power of the burst was terrifying, setting off a chaos in this deep seabed, if an ordinary person was hit, he might be directly blown into pieces of flesh and blood.

After a few tens of seconds, the debris and dust of the seabed stirred up by the explosion gradually fell, and the area gradually became clear from chaos and blur.

At this time, at the entrance of the passage, the cobweb-like cracks appeared on the boulders weighing more than ten tons, as if they would disintegrate at any time.

At the site of the explosion, there was a deep depression, and it was from the center of this depression that those cracks spread.

"It doesn't seem like that's enough." The big whale said.

"yes, it's going to have to be blown up again." Su Xia nodded.

"I only used a little bit of energy just now, I was afraid of blowing up the pyramid, but now it seems that this pyramid is very strong, I will make a bubble with a larger energy...... "After that, the big whale spit out another bubble, which is indeed much larger than the previous one, and Moyo is a third larger.

Under his and Susha's gaze, the bubble floated gently past, and exploded on contact with the stone.

This time, the explosion was much more powerful than the previous one. After the explosion, the long strips of boulders completely shattered, disintegrated, and turned into scattered pieces of rubble, rolling down to the bottom of the pyramid.

Behind the boulder, in front of Su Xia's eyes, was an arched door-like entrance.

"Sure enough, there's a passage." This arched entrance is supported by a long stone on the left and right, and a curved stone block on the top, about two meters high, just enough for an adult to enter, and about one meter wide.

After seeing the entrance, the big whale urged, "Come in and have a look!" ”

"Okay." Su Xia smiled, he was also curious, and immediately sent an exploration robot over. He stood in front of the console, staring intently, earnestly at the picture that the little robot fed back.

This giant pyramid, which has been in the dust for thousands of years, has finally welcomed visitors today. In the picture, the left and right long stone strips of the arched entrance are inscribed with complex and inexplicable patterns, and the same is true of the curved stone block at the top.

Looking inside, the depths of the passage were dark, filled with seawater. Perhaps as early as 10,000 years ago, when this pyramid sank, seawater poured into it through some gaps, after all, it is only a stone building, no matter how carefully it is built, it is impossible to have no gaps.

Even a metal tower made of steel will be corroded by the sea water in this long time, turning it into a pile of scrap copper and rotten iron.

"Got in...... See what? The big whale couldn't wait to ask.

"Still in the passage." Susha replied, "There are some murals on both sides of the passage, and I'm looking at them. ”

"What mural?"

"The ...... about this civilization" has been immersed in the sea for 10,000 years, and the murals on both sides of the passage have faded, but fortunately, there are still deep and shallow traces of carving, and you can see its original appearance.

In the murals at the entrance of the passage, you can see many human-like villains, their facial features are relatively blurred, but their bodies and limbs are relatively clear, behind these villains are dome-shaped animal skin tents, and in front of them are piles of bonfires, which are vividly depicted, basically fragments of primitive tribal life.

Walking inside, more murals appeared in front of Su Xia's eyes. In the picture, there are scenes of these primitive tribes hunting, there are also scenes of childbirth, and many of them are conquests between tribes.

The war scenes are particularly depicted, and you can see that one by one the depicted tribal warriors are holding rough bone spears, stone spears, wooden scissors, etc., fighting with the other party's tribal warriors, bloody battles, fierce battles, rivers of blood, and many people died.

In the midst of fierce battles, one tribe finally rose up, defeated the rest of the surrounding tribes, successfully unified, became a large tribe, and had the basic rudiments of the state.

"Is that all?" The big whale asked,

"Just some images of primitive people fighting? Is there anything else? ”

"Don't worry, I'm watching ......" At present, the little robot has only explored an area of five meters in the passage, and has not really gone deeper, and there are still a lot of unknown areas waiting to be explored ahead.

Continuing to go deeper, more mural content appeared in front of Su Xia's eyes. Although the tribes were united, the way of life of those people was still relatively primitive, and they had to fight wild beasts for meat, often filling their stomachs, and had not yet developed a successful agricultural civilization.

Until one day, a strange looking giant bird appeared in the sky.

"Flying saucers?" Su Xia stared at the picture on the wall of the passage, and he saw something very familiar.

On the mural, a disc-shaped flying object appears. Underneath the flying object, the facial features of the primitive inhabitants depicted on the mural were finally clear, and they showed panic, fear, and uneasiness, because it was something they had never seen before, beyond their cognition.

In the subsequent mural, you can see that many humanoid creatures have descended from the disc-shaped flying object.

"The portrayers of the mural seem to regard these creatures as 'gods', so behind these creatures, they added something in the shape of a halo to express respect for the gods." Continuing to look back, the content on the mural has changed drastically.

The creatures that came down from the flying creatures brought a magical crop to the primitive inhabitants of this civilization, and taught them how to farm, so that they no longer had to fight with wild beasts, and gradually developed an agricultural civilization.

On the mural, people's expressions have also changed from the initial panic to the ultimate respect and surrender.

"I see, it seems that aliens have really come and helped this civilization." Susha said.

"In other words, what those old sea monsters said is true, this pyramid is really an energy tower?" The big whale asked in surprise.

"Not sure yet." Su Xia looked focused and continued to look down. After the development of agricultural civilization, the people of this area gradually took the shape of a state and began to build more stable houses.

They mined the nearby rocks, and in the flatter areas, gradually built the stone city that Susha saw.

Soon, Susha saw the end. This passage is only more than 30 meters in total, and the content on the mural has come to an end.

In the mural, there is a picture of the construction of the pyramid, and the pyramid is surrounded by countless laborers, and you can vaguely see the difficulty of building this behemoth back then.

"Even now, it's not easy to build this thing." Su Xia sighed. After the pyramid was built, the humanoid creatures with halos behind them stood at the top of the pyramid with their arms outstretched, as if announcing something.

Seeing this, Su Xia's eyes changed, and behind those few people, he saw a road. On the mural, the road stretched out from behind the men, constantly ascending, slowly rising, as if leading to the distant horizon, and at last, disappeared into an area depicted with starlight.

Su Xia took a deep breath and guessed the meaning of the mural.

"The Road to the Starry Sky ......"