The changes that occurred in front of him made Qu Feng feel a little surprised, although he was not proficient in the way of formation, but he could also know that the place where he was at this time was not the real world, but another space constructed by this formation, which was also the real place of this formation.

The black stone altar is not as shabby as it was seen before, it is very big, even the invincible standing here looks very petite, there are four head-sized spars embedded in the four corners of the stone altar, and the formation has not been activated, so the spars have not lit up.

There are some complex lines carved on the stone altar, these lines have no color, they are not conspicuous in the stone altar, and the shape looks chaotic, but they are intertwined, but they faintly form a subtle cycle.

Qu Feng's gaze swept around the lines of the ground and the four spars, and then fell on the stone pillar in the center of the stone altar, the height of the stone pillar was two zhang away, and it was as black as the stone altar, very pure black, there were no patterns or lines on it, except for a small gap near the bottom, there was nothing special to see.

The formation was not activated, but there was a rather strong energy aura emanating from the stone pillars, which actually gave people a sense of stability and steadfastness.

Invincible said: "Little Brother Qufeng, this is the true appearance of the Liyan Peak's mountain protection formation, the four spars in the corner are used to provide energy, and the stone pillar in the middle is the eye of the formation, once the formation is activated, it can protect the Liyan Peak." ”

Qu Feng nodded, took his eyes off the stone pillar, glanced at the energy crystals around him, and said, "The first thing to solve is the problem of energy continuity, if the energy is insufficient and cannot be replenished, even if the attacking force rock peak is only a third-order spirit beast, it can use a long-term attack to grind this formation away." ”

Invincible nodded and said, "That's true, this mountain protection formation has been out of use for many years, and our little giant doesn't even have the consciousness of the formation anymore, so the energy has not been stored in time, and only these four energy crystals remain." ”

"How do I get this hedron?"

Invincible said: "Energy is energy, except for extremely special energy such as the power of space, other energy can provide the needs of the formation. ”

Qu Feng's eyes lit up and said, "What about the spiritual power in our bodies?"

"Spiritual power is indeed possible, but the scope of action of the formation is the entire force rock peak, once it runs, even if it does not withstand any attacks, it also requires an extremely large amount of energy for support, and ordinary spirit masters can't bear it at all.

And there is naturally no problem with a peak powerhouse like you, Brother Qufeng, but if you want to go to Puranwoken, you can't stay to provide energy for the formation, and if you use the method of reserves, we lack the skills and props to refine and store spiritual power, and it is too late in time. ”

Qu Feng said, "What's the easiest way to do that?"

"The spirit core of the spirit beast. Invincible said: "The spirit core contains the energy of the spirit beast, the higher the level of the spirit beast, the more sufficient the energy of the spirit core, if you can obtain a sufficient number of spirit cores, the maintenance of the formation energy is not a problem." ”

Hearing this, Qu Feng couldn't help laughing, as a peak powerhouse, the number of spirit treasures on his body was a little pitiful, and it could even be said that there was no at all, the only storage he had was the spirit core, and most of these spirit cores came from high-level spirit beasts.

"Brother Qufeng, what are you laughing at?"

"If it's the spirit core of a fifth-order spirit beast, how many can solve the problem of energy?"

Invincible was slightly startled, obviously the fifth-order spirit core was not in his plan, he thought for a while, and said: "Two should be enough, if it is to be safe, three is enough, but unless you go deep into Pulanwoken, it will be difficult to find a fifth-order spirit beast." ”

With a wave of his hand, more than a dozen spherical rays of light shot out from him, and he suddenly felt that his movements were very atmospheric and chic.

Invincible was startled at first, and then hurriedly stretched out his big hand to stop those rays of light, and after seeing the spirit cores in his hand, he was completely stunned.

"Okay, the energy problem has been solved, and the next question is the strength that the formation can bear. ”

Qu Feng walked to the stone pillar in the center of the stone altar and put his palm on the stone pillar, the touch was a little cold, and he could feel the energy surging in it.

Invincible finally woke up from his surprise, put away the dozen or so spirit cores, walked to Qu Feng's side and said: "The energy in the eye of the formation and the structure of the formation determine the attributes of the formation, if you want to increase the energy limit that the formation can bear, you need to transform the energy in the formation eye or the structure of the entire formation, and even the materials used in this formation must be calculated, I'm afraid it's a little troublesome." ”

Qu Feng frowned and said, "In other words, even if you want to forcibly increase the energy in the eyes of the formation, you can't do it, right?"

Invincible nodded with a serious face.

Qu Feng was silent for a while, then his eyes suddenly lit up, he laughed, and said: "Invincible, prepare to open the formation, I have a way to increase its bearing limit." ”

In the midst of laughter, Qu Feng once again pressed his palm on the stone pillar, and a domineering and strange aura emerged

Half an hour later, Qu Feng and the invincible figures appeared above Liyan Peak, there was a layer of light under them that shrouded the entire mountain, and many little giants stood in the open space and looked at the two of them, their expressions were very strange, and there seemed to be some nervousness in anticipation.

The invincible expression was the same as the other little giants, he glanced at Qu Feng beside him, and said with a wry smile: "Little brother Qu Feng, is it really okay?"

"You have to trust me, if you don't try it, you will know that it will not work, I will do it. ”

Invincible cried with a sad face: "You won't destroy our little giant's base camp, will you?"

"Of course not, don't worry. ”

Invincible, of course, not at ease.

The wind moved, and the figure turned into a ray of light and fell rapidly, and the figure reappeared on the light mask.

Dark gold is the color of the spiritual power in his body, and at this time, his right leg is shrouded in dark golden light, he doesn't hesitate, his right leg stomps hard!

Under the blow of the wind, the light mask trembled violently, as if it would shatter at any time, and just as the invincible and many little giants were about to shout, a strange black light suddenly appeared above the light mask!

As this black light emerged, the energy of Qu Feng's right leg quickly weakened, and after a while, it completely dissipated, the black faded, and the light mask was still there.

Qu Feng was obviously very satisfied with this result, with a smile and smugness on his face.

The light layer was naturally the mountain protection formation of Liyan Peak, and that black light was the dark power that he poured into the formation half an hour ago.

The power of darkness did not increase the energy intensity in the eye of the formation, but it could become a part of the formation, but only in this way, the limit of the mountain protection formation could be increased.

Because the attribute of the power of darkness is devouring