It wasn't until Su Feng completely entered the cave that he could see the environment in front of him clearly.

Unexpectedly, in the barren mountains, there will be artificially dug ancient caves, all around are mottled moss, and craggy stone walls, and there are many patterns painted on them, I don't know what to do with them.

Suddenly, Su Feng noticed that on the ground not far away, there was a scarlet stone, about the size of a baby.

When I walked over, I found that there was a small spot as black as ink inside the stone, which seemed to be inlaid in the center.

"It's not strange that such a large cave was dug just to store a stone?"

Su Feng stretched out his hand, and a flame was born in the palm of his hand, close to the stone to burn.

Almost instantly, the stones melted like snow and ice.

A wisp of black aura suddenly came out and merged into Su Feng's eyebrows.

Strange to say, Su Feng only felt that he had a vague memory in his mind, but he was completely unable to mobilize it with his subjective will, and he felt that there was always a lack of opportunities.

"Forget it, if it's harmless, let him go."

Suddenly, a stream of lava-like heat suddenly surged in Su Feng's body, and spread to all four limbs, like a flood that opened the floodgates!

Su Feng's eyes widened, realizing that he was not one step away from breaking through!

Thinking of this, Su Feng quickly took out the refined elixir from the Void Immortal Ring, swallowed it, and began to meditate and cultivate.

The surging and pure aura surged out from heaven and earth and merged into Su Feng's body.

Because of the hard battle with the three masters before, and then the long journey for a long time, Su Feng was already physically and mentally exhausted.

At this moment, with the blessing of mysterious black qi and elixir, Su Feng felt warm all over his body as soon as he first cultivated, as if he was bathing in a hot spring, and his physical and spiritual strength recovered at an astonishing speed.

Su Feng could clearly feel that the aura in his body was approaching saturation, but he was never able to take the last step.

"It seems that the breakthrough is not something that can be achieved overnight, and more aura is needed to fill it!"

Su Feng slowly closed his eyes and cultivated for almost three days in a row.

After feeling that everything was ready, Su Feng slowly exhaled a breath of turbid air and began to prepare to attack the foundation building realm with all his might!

Thundered!

The innate qi around Su Feng continued to rotate, like a hurricane, stirring throughout the cave, and with a loud thunderous sound, the momentum became more and more powerful!

The whirlpool around him was constantly changing, and the speed of agitation was getting faster and faster, and the surging attraction was also quite terrifying, causing the aura around the entire barren mountain to be pulled over.

A large amount of aura was devoured by Su Feng almost as soon as he entered the cave.

Bang!

With an earth-shattering bang.

In the entire cave, there were countless phantoms of stars, constantly circulating above Su Feng's head, looking at each other from afar.

Under the filling of the aura, the light of the stars gradually changed from dim to bright.

In the end, it became extremely bright and shining!

"The current state, if you want to break through, it's not enough at all."

Su Feng muttered to himself, took out the remaining single eye again, and took it all.

I don't know how long it has been, but the majestic medicinal power has been absorbed into Su Feng's body.

He could feel that his dantian and meridians were constantly expanding, at least dozens of times, or even hundreds of times more than before, and with the flow of stars, this increase was still increasing.

Su Feng knows very well that this state is a real breakthrough.

According to Master's teachings, the foundation building realm is also several levels of atmosphere.

There are four stages of heaven, earth, Xuan and Huang.

The level at the time of foundation building actually determines the upper limit of a cultivator's future achievements.

That is to say, if it is possible to use the Heavenly Dao

Build a foundation, and the future may go further.

If it is a yellow-level foundation, it will be quite difficult to reach the realm of the peak of martial arts in the future.

Su Feng's current situation should be regarded as the pinnacle of ground-level foundation building, and there is still a line away from the foundation building of the Heavenly Dao.

After all, although the stars belong to the universe, they cannot encompass all things.

For the whole long river of time, the stars are like people in the world, no matter how good they are, they are just a grain of sand and a grass, and they can definitely not become the existence that leads the entire era.

If you want to reach the top, you must become the sun overlooking everything in the world!

Minutes and seconds passed.

Su Feng's eyes were always closed, his expression was serene, and there was no sign of preparing to break through.

Even the aura on his body had already met the necessary conditions for a breakthrough.

He didn't do it willfully.

On the contrary, Su Feng did this because he was preparing to use this mysterious realm to comprehend the entire heaven and earth.

Affected by this, his spiritual power is constantly increasing and growing.

About six or seven hours passed, and the stars above Su Feng's head suddenly cracked, and then surrounded by hundreds of millions of stars, a bright moon lit up.

As time passed, a round of red sun phantom appeared again above his head, echoing the bright moon in the distance.

At the same time, above the entire barren mountain, there was also a strange scene of the sun and the moon shining together!

The beasts and birds in the barren mountains became extremely restless, and let out earth-shattering roars, as if they were afraid of something.

Then, the entire mountain peak continued to tremble, and a large number of rock walls began to crack, which could collapse at any time!

Jiang Lingxin, who had witnessed everything, suddenly showed a frightened look.

She is not a fool, she knows that this movement was all made by Su Feng.

"Su Feng, what are you doing?"

Jiang Lingxin originally wanted to wait for Su Feng in the same place, but in the end, the entire barren mountain had evolved into an extremely violent shaking, and rocks continued to fall from the top of the mountain.

If she hadn't dodged in time, she would have been smashed!

Without the slightest hesitation, Jiang Lingxin began to flee in a panic, and finally found a relatively solid and safe position.

As soon as her front foot hit the ground, the mountain behind her collapsed!

At this moment, all the beast roars were drowned out by the earth-shattering roar.

Then there was a deathly silence, as if the whole world had lost its voice.

Jiang Lingxin set his eyes on most of the collapsed mountain, and the excitement and worry in his eyes could not be concealed, and he didn't dare to take a breath.

"Su Feng, where are you?"

She eagerly ran to the ruins and began to wrap her hands with her innate qi, constantly fiddling with the rubble, trying to dig Su Feng out of it.

You must know that this is a mountain collapse, even if Su Feng is an immortal, he will only have to wait for death if he is buried below.

But Jiang Lingxin always had an unrealistic illusion:

Su Feng must still be alive, if he is one step late, he may miss the best opportunity to rescue!

And at this moment, behind her, there was a sound of footsteps.