The swarthy mouth of the cave appeared on the ground out of thin air, winding all the way down at an inclined angle.

The entrance of the cave is very large, with a diameter of several meters, and from a distance, it looks like there is a bottomless abyss giant mouth on the ground, coupled with the whistling wild wind all around, when it flows through this place, it will always make a whining ~ wooing ~ sound, as if someone is crying, and it is incomparably infiltrating.

The heavens of eternal life have always been dark.

Even the clouds are also black.

This place is the darkest place in the darkest, as if it is not a cloud hanging overhead, but a lump of evaporated ink.

The wilderness, as far as the eye can see, is vast and boundless, but it is also dark.

The land is also black.

But even so, it is still not as deep as the darkness of this cave, so mysterious, and so terrifying.

Wu Di held in his hand the development map of the previous ore vein development that he had just obtained from Xiaoqing.

That's right, it's the development map.

This map carefully depicts the previous mining of the Wuji Sect on this vein.

Wu Di probed the picture and looked at the few points marked by himself on it, his face was a little solemn.

"These nodes are very strange, as if they were artificially changed, and I don't know what the reason for the change......"

In the picture, another mining branch road was crossed, apparently to tell the latecomers that this road is impassable.

There are not many such branches, only a few, three of which are in the soil layer closer to the top, and one at the bottom.

The bottom one, and the nodes it connects to, is also the weirdest one of them.

Wu Di's intuition told him that this point might be very important, and the danger in it may be far beyond his imagination, instinctive, Wu Di thought that if he could, he would not go.

He is here to find the truth, not to die.

"Then I can only explore one by one. Wu Di's face was very solemn.

He looked around, and he could still make out the underground palace around the branch, which was originally the mining place of the Wuji Sect, but he didn't know why it was abandoned.

The quality of the ore produced here is very high, and the number of large yuan crystals is not a few, but it is still abandoned, which is really incomprehensible.

That's what makes this place even more mysterious.

After confirming that his preparations were correct, Wu Di sneaked towards the cave.

This place is extremely silent, Wu Di can't feel any vitality fluctuations from here, this place, just like the Yongle Town that Wu Di encountered before, is an abandoned place.

When he first entered the cave, the darkness devoured Wu Di, and Wu Di adapted to it for a while before he got used to such darkness, but his visibility was also greatly affected, only about five meters, such visibility was very unfavorable for Wu Di, and he couldn't react very quickly when he encountered danger.

Wu Di swallowed his saliva secretly, in such a dark and dead environment, the sound of heartbeat could be heard very clearly.

With the help of the Divine Illusion Pill, Wu Di covered his breath to the state of a dead man, so that no one could find his breath, as long as Wu Di didn't run to the monster to hang around, the monster basically couldn't feel Wu Di's existence.

However, with such low visibility, maybe Wu Di has been dangling in front of the monster for a while, and Wu Di doesn't even know it.

Legend has it that humans are creatures that come out of the darkness.

Therefore, human beings have an instinctive affinity for darkness, but they also have an extremely strong sense of fear.

That's the fear of the unknown.

When this fear is amplified to a certain limit, people will go crazy.

Wu Di tried his best to suppress the fluctuations in his heart and walked towards the bottom of the cave.

His steps were light, and his five senses were divine.

Only then did I realize that the surrounding area was narrow except for the darkness.

At first, Wu Di didn't notice it much, but as he went deeper and deeper, the cave, which was originally quite wide, could only accommodate two people to go together, and now, only one and a half people are allowed to go together.

Such a small passage space is not good for both the monster and Wu Di.

Such a small space is only in the middle of the mouse, and it becomes spacious in the back, which makes Wu Di breathe a sigh of relief, Wu Di continues to move forward I don't know how long, and there is a fork in front.

In Wu Di's memory, this is the branch of the first node.

Following the route he remembered, Wu Di walked towards the crossed node.

"Huh?" Wu Di was about to move forward, when he suddenly realized that something was not quite right.

"It feels like there's a road missing?" Wu Di remembered, there should be a branch road here, but now there was one less entrance in front of him.

Something is wrong!

Wu Di hurriedly began to probe.

The surrounding soil is black, and because it is underground, it is a little damp and hard, like a stone.

Wu Di's method of echolocation in his mind didn't work anymore.

There's only one way.

Wu Di probed his divine sense and spread towards the surrounding soil.

Such a process consumes a lot of mental energy, but in order to explore the hidden fulcrum, Wu Di has no choice but to do so.

Just when Wu Di probed the depth of about two meters behind Mo Tu, Wu Di's right side suddenly became empty.

Wu Di's face was pale.

Got it!

When he retracted his senses, he let go of his hand and began to dig this side.

Not long after, in front of Wu Di's super physical strength, a mere two-meter layer of soil was quickly dug through by Wu Di.

An extremely empty aisle appeared in front of Wu Di.

The diameter of this walkway has reached five meters.

When Wu Di was exploring, his divine sense happened to be able to detect the rock wall that he walked to.

In this way, Wu Di walked towards this side more cautiously.

However, to Wu Di's surprise, this walk seems to be mined at random, sometimes upward, sometimes downward.

After Wu Di went up and down, his face suddenly moved.

Within the scope of his divine sense, the road ahead was actually sealed!

No, to be precise, it's not a blockade, it's that there is no further mining at all.

It's like the people who mined this place back then, found something, or encountered something, and didn't dig any further.

Wu Di tried to use his divine sense to probe what was behind this layer of soil, but in the end, he didn't detect anything.

This made Wu Di very confused.

Could it be that a mine road blocked by these people is a useless mine road?

It's a bit confusing.

But this is the situation here, Wu Di had to give up.

He returned to the fulcrum and headed for another fulcrum.

And he is also going all the way to the bottom.

I don't know how long it took, Wu Di made it to the ground in a bit of decadence.

Just now, he probed two more fulcrums, but still found nothing......