Since these buildings were excavated, Niu Er came to inquire about the situation.

He'd been studying here all day, and he hadn't found anything other than that he had learned that it was built in a relatively old age.

Lin Xuan looked at the ancient buildings that were gradually being dug up in front of him.

He remembered the last time he was trapped in the mine, the underground world he had penetrated into, and that underground world was extremely cold, even cultivators felt the biting cold.

"Niu Er, what is in the depths of the underground world in the mine where I was trapped last time?"

Last time Lin Xuan was trapped, Niu Er was also there, and it was Niu Er who was able to get out of trouble.

"That Underworld ......"

Niu Er thought for a moment and explained:

"I didn't look deeper, but I think it's not ordinary, and in the depths, there may be remnants of ancient times. ”

Lin Xuan said, "Why don't we go and have a look?"

Niu Er nodded: "The young master wants to go, I will accompany you to go, and I am also more curious about the things of the ancient era of the earth, through these ruins, I should be able to understand some things about the ancient era of the earth." ”

After Lin Xuan explained some things about Black Rose, he walked towards the Dongdu mining area with Niu Er.

Both of them were cultivators, and they soon came to the Dongdu mining area.

The mine had collapsed, but Niu Er had forcibly opened a passage last time.

Because there is a big secret hidden here, there are always people guarding here.

Through the passage, the two entered the underground mine again, and walked all the way to the depths of the ground.

There is no bottom in the underground mine, and you can't see your fingers.

The darkness was like day in Lin Xuan's eyes.

Niu Er was also a powerful cultivator, and darkness could not affect him.

The two walked side by side, all the way to the depths.

They move forward fast.

Before I knew it, I came to an underground cave.

The temperature here was already very cold, at least minus 100 degrees, and Lin Xuan had to urge the True Qi to protect his body.

What made Lin Xuan strange was that the temperature here had reached about minus 100 degrees, but there was no ice on the surrounding stone walls.

Lin Xuan looked at the passages that extended in all directions and asked:

"Niu Er, where should we go?"

Niu Er looked at the passages that extended in all directions, and after a while, he pointed to the passage in front of him and said:

"It's strange here, there's a very strong magnetic field, and my mind can't sense what's going on around me, so let's go this way. ”

"Hmm. ”

Lin Xuan nodded.

The two of them moved forward slowly.

This passage is more than 20 meters wide, the ground is full of potholes, and the top of the head are strangely shaped stalactites, and there are water droplets.

Tick, tick.

Droplets of water dripped on the ground, and there was a ticking sound.

The sound resounded in the silent underground world, making people chill and chill.

The two also don't know how long they have been walking.

Here, it seems, there is no concept of time.

Lin Xuan took out his mobile phone, there was no signal on the mobile phone, and the time on the mobile phone showed that it was 10 o'clock in the evening.

In the blink of an eye, he continued to look at the time, and it became three o'clock in the afternoon.

This shocked Lin Xuan.

"What's going on, is there something wrong with my phone?"

Niu Er explained: "As I said, there is a strong magnetic field here, which affects time, and anything can happen here. ”

Lin Xuan took a deep breath.

It seems that human beings' understanding of the world is still only in the exploration stage, and the phenomenon he is encountering now cannot be explained by today's science.

Niu Er suddenly pointed ahead: "Young master, look." ”

Lin Xuan looked casually and found that a statue had appeared in front of him.

More than 30 meters tall, it was a woman in a dress, holding a guqin in her hand and staring ahead with her eyes.

The two came to the bottom of the statue.

Lin Xuan stared at the statue.

He didn't know how long the statue had been there, but it was intact and the woman carved was beautiful.

He looked puzzled and asked, "How can there be a statue here?"

Niu Er looked around.

There are also various patterns carved on the surrounding stone walls.

He stared at it for a moment, but he didn't know what the words meant.

"Young master, look at the stone walls around you. ”

Lin Xuan had been staring at the statue, and when he heard Niu Er's voice, he looked at the stone walls around him.

There are many magical patterns carved on the stone wall, and there are words on the patterns, but these words are crooked, and he doesn't recognize them at all.

"Niu Er, do you know these words?"

Niu Er shook his head: "I'm not an earth creature, I'm from the ancestral star, and I don't know any of these earth slaughter ancient characters." ”

"What's that?"

Lin Xuan suddenly pointed not far away.

He walked over immediately.

In front of the stone wall, stood two warriors with stone swords in their hands, the warriors were two meters tall and wore armor.

Niu Er walked over, looked at the statue, and said, "This should be a puppet warrior." ”

"Puppet warriors?"

Niu Er explained: "It is refined by some strong people using special means, as long as there is energy, the puppet warriors will continue to kill the enemy, and they will not die." ”

"Isn't this similar to the robots that humans make today? ”

Niu Er nodded and said, "Well, it can be understood in this way. ”

The two walked around the area, and found nothing but two puppet warriors and a huge statue.

As for the patterns and words on the stone wall, this was too mysterious, and Lin Xuan didn't know what it meant.

Although he didn't know, he kept it in his head.

I went around and found nothing.

The two also decided to leave.

Before leaving, Niu Er said: "Young Master, take these two puppet warriors away, as long as there are enough spirit stones, you can urge the puppet warriors." ”

Lin Xuan nodded, and then put it into the storage ring.

After taking the puppet warriors away, the two chose to leave.

After they left, the underground cavern became calm and silent again.

I don't know how long it was, but a breeze blew.

Whew.

The wind is howling.

The eyes of the huge statue in the middle of the cave suddenly moved.

The woman in the statue shed a drop of crystal tears.

But Lin Xuan and Niu Er had already left, and they didn't see this scene, and if they did, they would definitely be shocked.

I don't know how long they walked, Lin Xuan and Niu Er finally left this underground world.

It was noon when I came outside.

Walking out, Lin Xuan felt in a trance, it seemed that it took a long time to enter the depths of the underground this time.

He pulled out his phone and glanced at it.

Three full days have passed since the discovery.

He gasped.

He only felt that a moment had passed, but he didn't expect that three days had passed.

"Oh my God, it's been three days. ”

Niu Er was not surprised at all for the past three days, because there was such a powerful magnetic field in the underground world.

In the words of the earth, it is the magnetic field, and in his words, it is the existence of this terrible formation below.

"What happened to the earth in ancient times, and why did a powerful civilization become so depressed. ”

Niu Er was puzzled.

He had heard a lot of legends about the Earth on the ancestral planet.