"Huh, there are really three people coming down, and they're so fast!"

Hearing this, Mei Lin's eyes narrowed slightly...... She heard the voices of those people too.

"It's just that you found an entrance, and before you can determine what is underneath, you killed someone to ask for credit?" Merlin was a little incredulous.

"As long as there is profit to be made, the benefit will tend to be maximized, and who can guarantee that his companion will not do the same thing in the next moment?" said Filin.

"Where are they down?" asked Merlin, rolling her eyes.

"It's right above you. ”

"Really?" Glancing down at the bottomless underground below, Merlin said with a sneer on her face, "Since you want to know what's down there, let them go first." ”

With that, Merlin quickly crawled towards the position that Filin had said.

This time, however, she was much more cautious, using a small sorcery to erase the marks left behind her completely, and her climbing posture became extremely careful.

After a while, she entered the artificial cave and said with a slight sigh of relief, "Filin, where are they now?"

"It's almost where you were, well, they kept going. ”

"Hey, let's just let them enjoy exploring first. ”

Merlin ignored the three of them, she looked at the artificial cave and said, "Where are we going next?"

"Going deep into this cave, after my detection, it will take about a kilometer to walk. ”

"Oh. Nodding, Merlin didn't stop, and immediately walked towards the depths of the cave.

Five hundred meters deep in the ground, there was almost no light here, and Merlin simply cast her True Eye...... This witchcraft solidified in Merlin is very interesting.

Energy is there in the end, more or less, stable or tyrannical and disorderly, and energy is always there. Even the so-called 'vacuum' has spatial energy. So under the eyes of true vision, everything is hidden.

Soon after, artificial stairs appeared in front...... Of course, in the direction of the underground.

"How many steps are there?"

"I don't know. Unexpectedly, Filin shook his head and said.

"You don't know?" said Merlin, with a look of surprise on her face.

Fei Lin's tone was a little depressed: "I told you that my body is incomplete, right?"

Nodding, Mei Lin said, "Well, you said that." ”

"Because of this, my current detection range is at most a kilometer, and I don't know beyond a kilometer. The perception of energy substances such as magic liquid is a little further away. ”

"But there's one more point. At this, Filinning paused.

"What?"

"That's time. Fei Lin said helplessly: "If my soul remains awake, the consumption will be very high, unless the curse is lifted and returned to the body in time." So I have to save as much soul energy as possible. ”

"Then you rest first, and I can go down myself. Merlin said.

"That's not necessary, after all...... Well, I've got a way to find out everything here. ”

"What's the solution?" Merlin was stunned.

"Psychic probe. ”

"I will. ”

"I'm going to teach you something different. ”

Fei Lin said slowly: "Under normal circumstances, the use of spiritual power has various limitations, the spiritual shock method I taught is different from the same kind of spiritual witchcraft, through the way of concussion, the spiritual power is repeatedly compressed and then released, they will be released farther and wider, and then these spirit spirit will be withdrawn and converted into map screen ......"

"What should I do?" asked Merlin, listening to Filin's words, with some interest.

She also felt that the current 'spiritual perception' witchcraft had too many limitations, and she thought about improving it many times, but unfortunately, many attempts failed.

"If you want your mental power to shake up, you can't use your mental power as usual. It depends on the resonance of the brain to shake in one's own mind, and then compress the spiritual power repeatedly, and finally release it suddenly. ”

"In order to produce the effect of oscillation, it is necessary to achieve at least 20 oscillations per second, which is the most basic attempt. After mastering it thoroughly, perform high-frequency oscillations. ”

"As long as the vibrations generated in one second reach more than a million times, then you can successfully perform mental shocks. ”

Listening to what Fei Lin said for a long time, Merlin understood a little.

The so-called spiritual oscillation is vibration, which allows spiritual power to accumulate, ferment, and then compress in the form of vibration.

After understanding the way of the shock, a smile immediately appeared on Merlin's face.

It's so simple.

If ordinary people hear something that resonates with their brains and resonates in their own bodies, it is definitely a blind man touching an elephant, and there is no reason. And I am also worried about causing damage to my body, after all, the brain is an important organ of the human body, and once it is damaged, it will be appointed at the worst, and it will affect the strength at the least.

Merlene is different, she has the biggest cheat - Nebula. She was sure that with Nebula's protection, her soul would never be traumatized.

Call~

Taking a deep breath, Merlin controlled her mental power and began to vibrate violently.

Control, constant control.

Merlin gradually lowered the vibrations in her brain.

The mental power fluctuated and disappeared strangely.

Seeing Merlin's behavior, Filin was extremely surprised.

Surprised, incredibly surprised.

You know, the so-called spiritual shock, film is just talking.

Actually, he didn't expect much.

After all, it is almost impossible to use the human brain to perform concussions. You must know that the human brain is the most vulnerable place, and if it is only a slight concussion, it is possible to solve it, but this kind of high-frequency concussion, with the strength of the human brain, there is no other way to think of it except for a headshot, unless it is like him, throwing away the human body and existing in the state of pure soul.

However, just now.

Mei Lin clearly detected the low-frequency mental power shock.

At this time, Mei Lin, through brain resonance, ordinary people can't perceive the fluctuation of her mental power at all, but Fei Lin can perceive it very clearly.

"This guy really dared to try, I was just fooling her. "There's something incredible about Film.

Of course, Merlin, who was studying mental concussion at the moment, didn't know what Filin was thinking, and all she had to do now was keep experimenting.

Through the experiment just now, a smile appeared on her face.

"Filin, I did it just now, right?"

Unsparing in his praise of Merlin, Filin said, "Yes, very good. However, it belongs to the low frequency, and the penetration of this kind of spiritual power is too small, so it is of no primary use. ”

"Really?" nodded, and Merlin didn't speak.

Call!

Take a deep breath again, low frequencies are a good solution, high frequencies are not necessarily.

So she had to keep experimenting.