According to the information learned on the paper, the further down you dig, the more serious the signal interference becomes. Ordinary life detection devices are unusable, robots are difficult to control, and drilling rigs cannot be activated. Even the regular lights can't be lit, which can be said to be all possible for ordinary excavation departments.

So there have been a lot of disasters in the excavation department recently, and ordinary flames cannot be used at will, because some gases will cause explosions. I can only go down with the ancient, hedron light. At the same time, some of the machinery of the airtight suit cannot be used, and the oldest manual type can only be used, which lacks oxygen, is stressful, and there are too many injured people.

Fortunately, the depth of excavation is about 20 kilometers, and now it is not only about evacuation, but also has a clear purpose, and with the scientific and technological blessing given by the Star Sect, they can find the desired mineral as quickly as possible, refine it, and finally become one of the basic parts of the nuclear fusion engine.

"As far as such serious signal interference is concerned, at least it can support Zheng Kai's theory." As the ice began to descend, he could see that the indicators on the side showed higher and higher values, and there were some simple slogans carved in the stone to inform the depth of the place.

Because before this unknown and undetectable radiation or electromagnetic interference, all electronic devices, even electric lights and display screens, could not be used.

"Even the mind can interfere." Bing Shijue simply closed his eyes, and when there was no lighting, it was pitch black, although his eyes could adapt to the darkness, he could even make his eyes glow brightly, or see inside the darkness.

However, if there is something underground that can sense the light source or check the reflection, it is stupid to turn yourself into a target. Therefore, after thinking about it comprehensively, it is better to rely on divine thoughts.

The palm of his hand stretched out, and D-class metal emerged from the sea of consciousness, and then automatically levitated in front of the ice and began to cut. With the help of his Divine Thoughts, Bing Shijue probably knew that under the ground, about the location of the upper mantle, there was a dark curtain that could hinder the drilling of Divine Thoughts. Outside, there are a few sparse D-class mining guns.

"And what is the bottom of this crisis...... The metal drill bit in front of Bing Shijue is as easy as piercing into liquid, and his current body can also withstand the damp heat and temperature underground, and those high temperatures can instead become the driving force for Bing Shijue to continue downward, but he has to get used to the complicated faults around him, which are almost meaningless to him.

After a few dozen minutes, the rocks around Bing Shi felt that the surrounding rocks began to become soft, but also extremely hot. After a simple estimate of the speed of his flight, he estimated that he had gone more than 900 kilometers underground, and everything around him had begun to become hot and flowing like a liquid, but these high temperatures had also directly turned into energy after touching the skin of the ice starter. The metal solidified again, and he also stuffed those gravel minerals into his sea space.

Suddenly, Bing Shijue noticed that the long sword that opened the way had collided with a very hard object. It was also this object that blocked the detection of Bing Shijue's divine thoughts.

After listening to Zheng Kai's speculation, it is true that the shock is not so great...... But I've been through a lot in the past few months. Bing Shijue used his divine mind to probe this thing that was neither gold nor iron, and D-grade metal couldn't pierce it, "But human civilization in history was able to create this thing, and it was indeed ...... I grass. ”

When the divine thought spread little by little, Bing Shijue blurted out a dirty word.

Because his divine thoughts had spread to the end, which was 90 kilometers away.

Still, he felt the hazy sense of obstruction, and sensed the shell of the object.

"The diameter of the city along the river is only 50 or 60 kilometers, and this kind of underground creature is so ......" Bing Shijue walked through the liquid metal, and his body moved along the behemoth with some difficulty.

The longer he walked, the more he felt the shock in his heart gradually turned numb, and although his movements in the liquid metal slowed down, his speed reached a speed of several hundred meters per second.

But even in this situation, this place is like you can't see the first glance, not to mention that you still have divine thoughts that have been spreading.

This means that this strange thing occupies at least a few hundred kilometers underground.

Hundreds of kilometers may seem small, but it is actually the size of a province before the picnic area appeared, but now the numbness in Bing Shijue's heart has begun to turn into panic and despair little by little. Ever since he became an immortal cultivator, his fear of a third-level civilization was not so strong.

He is indeed worried about the survival of people on the earth, and also about the destruction of the civilization on the earth. But he is not alone, and he has also dealt with the battleships of the third-level civilization face-to-face. Even, in a small part of his heart, Bing Shijue still has a little confidence in himself, he is only three months old and has such an ability, and it only takes ten minutes to cross a distance of thousands of kilometers with abundant energy.

So ten years later? Thirty years later, how far will he be able to grow?

However, when he gradually perceived this behemoth in the lower mantle, in the heat flow and magma, Bing Shijue began to collapse some of the basic theories that had been constructed in his heart with his divine thoughts.

In his memory, the largest aircraft carrier was only a few hundred meters long, and the huge buildings were only 1 kilometer long and wide. This is the equivalent of a whole world for him when he was a child. But now in front of Bing Shijue is a completely integrated thing, which does not see any gaps, as if it is a huge thing that continues to extend in the interior of the earth.

"Already...... Flew 1000 km. Bing Shijue recalled this terrible number, "It's already one-twelfth of the diameter of the earth, what the hell is underground." ”

The unknown is still spreading, and the only consolation is that Bing Shijue doesn't need to breathe or eat now. The clothing, which clings to his skin and can withstand high temperatures, also transmits this heat flow to his body, turning it into the energy needed to swim underground.

In addition, the world in front of Bing Shijue was also divided into two. On the left, or on the top, is the bubbling orange-yellow world of changing colors, and the different metals under high temperature and pressure remind him of his childhood watercolors. And the right side, that is, the lower part of the body, is completely impassable, shielding the black of the divine thought, and this behemoth continues to stretch like this, from the back to the front, as far as the eye can see.

"1500 km...... Well?! Bing Shijue suddenly detected a hideous green ravine on this black giant, and there were two roads at the end of this ravine, stretching into the distance.

"Symbols, words? Digit? Damage? "Bing Shijue didn't feel that even D-class metals could harm the surface of the giant object, and what effect could these heat currents in the mantle do.

He slowly approached the black giant, his hands touching the green ravine, the size of which was beyond the scope of his divine thoughts. During the flight, Bing Shijue slowly sketched such a symbol in his mind.

The place you just saw should be some kind of vertical, similar to the beginning of "vertical". Then the two roads began to separate. In the heat flow, Bing Shijue struggled like an ant climbing the words on a tombstone. After dozens of minutes of exploration, he swam along the gully, which was tens of kilometers wide, made an obtuse turn, and then moved forward again.

After the same amount of time, Bing Shijue came to the junction of the two ravines.

However, he noticed that at this junction, there seemed to be two other ravines heading into the distance.

"Similar to ...... An 8 with a vertical bar on its head? Only instead of an arc, it's a parallelogram? Bing Shijue touched the still cold surface with both hands, making sure he didn't remember the pattern wrong, "Hmm...... Maybe there are other patterns. ”

Thinking of this, Bing Shijue's inner numbness finally had an outlet, he returned to the straight ravine, judged his position according to the direction of the flow of the speech, and then galloped towards another place.

Not long after, a rough ravine appeared again in Bing Shijue's thoughts, but this ravine was much kinder to him, and the place where he was was was a "horizontal". This horizontal line is about a few hundred kilometers away. And at the beginning of the horizontal, there is also a vertical, which also makes Bing Shijue very comfortable.

Flying down the "vertical", Bing Shijue's inner fear also turned into admiration and awe little by little, and soon, he came to a crossroads, the left and right sides of the intersection were generally straight, but with a hint of pen, even a little calligraphy.

"It's kind of similar to the word dry, but the middle side is off." As Bing Shijue drew this picture in his mind, he suddenly found a huge smooth area in front of him, but his mind told him that in the farther away, there was a sloping and unreasonable ravine.

"It's kind of like ...... U？ No, like D? Bing Shijue found that the figure in front of him was indeed a little inconsistent with what he had seen before, he seemed to be standing on the horizontal line of D, and the front was a converging arc, but if it was D, the connection between the two ends seemed very abrupt.

Not only that, on the left side of himself, the horizontal line was drawn towards the diagonal upper corner, making the figure outlined in Bing Shijue's mind look very weird.

"8 adds a vertical on the top of his head, and the horizontal line of the stem deviates, and below is a collapsed B?" Bing Shijue closed his eyes, entered his own sea awareness space, and looked at the pattern that was a little irregular after shrinking, "But adjust the shape a little more, 8 is a little tougher, wait...... Wait a minute? Oracle?! ”

Bing Shijue still remembers that when he was a Chinese teacher, he told the children about the evolution of glyphs, and these two patterns seem to have been glanced at a few times when he looked up information.

"I think about it, that 8 plus a vertical one, is it a Xuanzi? And then what...... Dry? Ge, no, there are ...... that match."

Now that he has the knowledge of the sea space, Bing Shijue instantly passed through the memories of several years, came to the hazy pictures of the past, and recognized the patterns queried on the computer.

"Wu, this is the martial character of the oracle bone inscription!"

"Then the real name of this behemoth is ......"

"Xuanwu!"