Turning left and right a few times, Lin Xuan's face suddenly brightened, and he found himself standing in a huge and incomparably vast space.

Looking ahead, an iron bridge about ten meters wide and two hundred meters long stretched straight out, leading to a silver "core" hanging in the air, which in turn stretched out countless iron bridges in all directions, connecting to the colorful stone wall. Lin Xuan looked down and immediately understood that he was standing in the center of the stone wall, and at his feet was a cliff hundreds of meters deep.

He counted them quickly, and there were a hundred of them, stretching in different directions, and inserting them into the rocks, stubbornly solid, and unmoving.

Mr. Hara stepped out from behind him, staring in the direction of the "nucleus".

"What's that?" Lin Xuan asked with a frown.

"That's supposed to be the legendary axis of the Earth." Mr. Hara replied.

Lin Xuan couldn't help but smile bitterly, because this place was completely different from the high-end, sophisticated, advanced, and complex axis of the earth that he imagined, and it was more like a modern abstract artwork. In particular, the "core" at the convergence point of the iron bridge is like a square iron box with a diameter of more than ten meters, and there is nothing unique at all.

He looked up at the top, and another iron bridge was inserted vertically into the stone wall at a ninety-degree angle, deep and solid. This structure seems to have existed for a long time, and the place is empty, like a ghost.

"Let's go, go there." Mr. Hara whispered.

Lin Xuan blurted out: "You really decided?" ”

Mr. Yuan nodded: "If you don't enter the tiger's den, how can you get the tiger?" ”

They slowly stepped onto the iron bridge and volleyed forward.

The material of the iron bridge should be some unknown alloy, and the two of them walked on it, very stable, without even the slightest trembling. This is not possible among the metals known on Earth, because even the hardest tungsten steel alloy can bend and deform under an excessively long span, rising and falling with human footsteps.

Neither of them was greedy for life or death, so they moved forward extremely fast, and in a few minutes they reached the big box at the pivot.

From a distance, it was a box, but up close, it was a huge hiding bunker, at least about twelve meters long, and the connection between the surrounding and the iron bridge was smooth and flat, not like a technical composition such as welding, but like a mold formation.

Lin Xuan walked between the iron bridges in different directions, circling the box, but he couldn't find a portal to enter.

"The box is sealed." He called out to Mr. Hara on the other side.

In his ears, the sound of "boom rumble" was still there, but he couldn't find the source of the sound.

The voice seemed far away, miles away; And it seemed to be very close, ringing in the ears and in front of the eyes.

He raised his eyes again and looked up, down, left and right, and found that at the ends of some iron bridges, there were also vague holes in zài, the same as the holes he had walked with Mr. Hara.

"Could it be that each hole leads to a different place? Really...... Strange, is this a good thing or a bad thing? Are there escape passages hidden in those caves? Or is it the same magma flow and heat wave? Lin Xuan was puzzled, and his brows became tighter and tighter.

Think about it a little deeper, are there people breaking into every hole and gathering into this huge "core"? At present, there are only him and Mr. Yuan on the scene, will more people appear here in the future? Where did they come from? What is the purpose of coming?

"Lin Xuan, don't trespass, it's better to be careful." Mr. Hara admonished in a low voice.

Lin Xuan looked straight ahead, and there was also an irregular hole at the end of the iron bridge, which was dark and dark, as if it was hiding infinite danger.

For the time being, there was no life here, just the two of them, facing this silent eerie iron frame.

"I'll go to the other side and take a look—" Lin Xuan said.

Mr. Hara responded: "Okay, be cautious, every qiē here is a bit unpredictable and full of weirdness." ”

Lin Xuan started slowly, observing the situation around him as he walked forward. He firmly believes that Yiqiē is definitely not so lifeless as it seems on the surface, there must be some kind of undiscovered power that fills the surroundings, and the danger lies beneath the silent exterior. What they see now is the silence before the Great War.

He followed the iron bridge to the entrance of the cave in his field of vision, paused at the entrance of the cave, listened intently, and made sure that there was no unusual movement in the cave before slowly entering it.

The entrance to the cave is about ten meters high and five meters wide, but the inside of the cave is unusually narrow, shrinking to five meters high and three meters wide, and it only takes thirty meters to reach the end, and the road ahead is blocked by a stone wall.

With Lin Xuan's rich experience, he immediately saw that the stone wall was equivalent to an ancient "Broken Dragon Stone", which was deliberately designed and placed to block the entrance of the cave. In other words, behind the stone wall, there must be a deeper tunnel.

In a narrow sense, the broken dragon stone is generally set in some ancient tombs, in order to prevent tomb robbers from entering the tomb, a huge stone will be used to seal the tomb door, which is the best example of the ancients using "gravity mechanics". The boulder that sealed the door was called the "Broken Dragon Stone", and the sealed door was called the "Gate of the World", which means - "The living outside cannot enter, and the dead inside cannot get out, as if the two worlds are separated." ”

Lin Xuan suddenly felt a little excited, according to his thoughts, the "Broken Dragon Stone" was the crystallization of human wisdom, if the "Broken Dragon Stone" appeared here, it would at least prove that it was arranged by humans or other creatures close to humans, not alien creatures, gods and demons.

Thinking like this, he suddenly breathed a sigh of relief, and his long-hanging heart also let go.

Immediately afterward, he found a small pile of decaying powder in the shadows of a corner of the stone wall.

He crouched down and watched intently for a moment, gasping sharply for those were the remnants of the decaying bones of the animals.

According to the verification of the autopsy analysis theory, under normal conditions, the speed of animal carcasses** is greatly affected by the ambient temperature, the cause of death and the individual's physique. When there are factors that favor the development and reproduction of bacteria, the carcass ** is fast, otherwise it slows down or stops. At temperatures of 25 to 35 degrees Celsius, proper humidity and air circulation, corpses** are fastest.

It is proved that the ratio of the time required for a corpse to be in the air, in the water, and buried in the ground is 1:2:8, and these numbers refer to the tissue part of the corpse, and that it generally takes hundreds of years for the bones to completely decay.

What shocked Lin Xuan was that it was precisely because these were "bone powder", not a white bone. Therefore, he can tell that the owner of these powders arrived here at least a hundred years ago, and then was trapped by the "Broken Dragon Stone" and died alone.

"Is this an animal carcass or a human carcass?" Lin Xuan smiled bitterly.

In fact, it does not require complicated steps to verify this problem, and he can distinguish it clearly with the naked eye——16814+d6su9h+10024777——>