at this time.

In the valley outside the mine.

"kill!"

The human warriors completely gained the upper hand and shouted loudly.

Although those demon dogs are powerful, there are too many human warriors.

Moreover, this time when entering the small world of the Crystal Mine, the Xiao Clan, Fengyun Clan, Su Clan, Divine Wind Sect, Tianyan Sect, and Guardian Academy, all the top forces in Zhongzhou, also sent a large number of Yuan-building Realm masters.

The total number of Yuan-building realm masters from these top forces alone is nearly a thousand.

Therefore, soon, those demon dogs began to retreat and were killed one after another.

"You guys move faster!

Those guys outside are about to rush in!"

Wen Zi kept urging Ye Yunfei and the dozens of students.

Everyone digs and collects spiritual crystals as quickly as possible.

Finally, after a while.

"Finally, we have killed all these disgusting monsters, let's go in!"

Outside the mine, there were roars of surprise.

Then, sharp figures rushed towards the mine.

"They're coming in!"

Wen Zi exclaimed in surprise.

"never mind.

We have already mined three-fifths of this large crystal ore vein, and we will not compete with them for the rest."

Ye Yunfei thought for a while and said.

"With so many people rushing in, how can we get out?"

Wen Zi asked.

"I plan to go in and have a look."

Ye Yunfei pointed at the deep cave entrance where black mist was constantly rising, and said.

"Let's take a look inside?"

Wen Zi looked at the entrance of the cave with a strange smell and couldn't help but be startled.

Ye Yunfei's figure flashed and he had already walked into the cave entrance.

Wen Zi and dozens of students had no choice but to follow Ye Yunfei and walk in.

Entering the entrance of the cave, there is an underground passage, filled with black mist and an eerie atmosphere.

"Master, you are planning to see if there are any corpses of the ancient demon clan in this place, right?"

Hu Miao asked.

"good.

The demonic energy emanating from this cave is very pure and of a very high level.

I estimate that if there are monster corpses here, they must be monsters with a higher level and stronger strength.

If it is used to extract the blood essence, it is just right for me to practice the sixth level of the Heavenly Demon Blood Melting Body Forging Technique.

So, I want to go in and have a look."

Ye Yunfei nodded and said.

"Hey, Ye Yunfei, wait for us!

This place is a bit scary!”

From behind, Wen Zi quickly caught up.

Those dozens of students looked at me, and I looked at you, gritting their teeth, each one quickened their pace, and closely caught up with Ye Yunfei.

This underground passage extends diagonally downward, and there are gusty winds.

I don’t know how long I walked through this dark underground passage.

Then, the scene in front of him was in vain, and Ye Yunfei found that he had entered a huge underground world!

This underground world is very vast, and it seems to have been built by directly hollowing out a large space under the ground.

At a glance, there are palaces one after another, and the mist is rising, making them look very dark!

"This place is so scary!

Could there be a ghost?"

Wen Zi's body was close to Ye Yunfei. While she was scared, she seemed to feel a little curious and excited.

The dozens of students also felt a little chill down their spines.

"Maybe there will be."

Ye Yunfei smiled.

"Go and have a look."

Ye Yunfei looked at the underground palaces in front of him and walked over.

Wen Zi and dozens of students quickly followed.

hey-hey……

Suddenly, a creepy sneer came from the distance, full of a vicious smell.

"Careful! Follow me closely!"

With his soul perception, Ye Yunfei discovered that in the distance, there were several black shadows exuding an evil aura lurking in the darkness.

Wen Zi and the dozens of students were all cautious and cautiously followed Ye Yunfei.

hey-hey……

Soon, that vicious sneer sounded again.

Then.

call out!

A black shadow suddenly appeared, carrying bursts of tragic aura, and rushed towards him from the sky.

"Master, it's a ghost bat!"

Hu Miao's voice sounded.

"good.

It’s a ghost bat.”

Ye Yunfei nodded.

Under the perception of soul power, Ye Yunfei could clearly see that the black shadow was a giant bat, with black scales all over its body and a ferocious face.

In his eyes, an extremely malicious look shot out.

A pair of claws, gleaming with cold light and filled with evil energy, like a pair of iron hooks.

Ye Yunfei stretched out his hand and pointed, and the void blade shot out, slashing towards the ghost bat.

squeak!

The ghost bat made a piercing strange cry and fought fiercely with the void blade.

The movements of this ghost bat are very fast, and between advance and retreat, it is like a black lightning.

However, the Void Blade is controlled by Ye Yunfei's soul power, and its speed is also extremely fast.

Moreover, the Void Blade can escape into space and appear mysteriously.

For a moment, the Void Blade and the ghost bat were at odds with each other.

Phew…

Several more ghost bats rushed over from the dim surrounding environment.

Ye Yunfei had a thought.

Five spiritual swords formed the Five Elements Killing Immortal Sword Formation and strangled them out.

After a while.

Zhizhi...

Those ghost bats suddenly screamed and were injured. Then they ran directly into the darkness and disappeared.
To be continued...