In the dim underground cave, the two sat opposite each other, and after obtaining the innate spirit into the dantian, Changxi immediately urged the innate true qi, and according to the ancient records, began to try to evolve the Dao fire.

This moment made Changxi wait for two years, he thought back again and again, simulating, when he was really about to succeed, he became extremely calm, how Dao Huo should evolve, how to succeed, for him every step has a detailed plan.

Success is at this time, and he methodically proceeds step by step in the way he once simulated......

There was almost no need for Lu Yifan to intervene, in the dantian, the orange Dao Fire was surging and rushing, and the spiritual energy of the earth was slowly injected into the Dao Fire along the body, as if fueling combustion, when the two were in contact, Lu Yifan could feel that the Dao Fire was expanding rapidly.

In the very center of the Dao Fire, a little dark red became more and more obvious, and with a 'bang', the Dao Fire exploded and scattered in all directions.

"It's over, the foundation is unstable!"

Lu Yifan has always felt that his entry into the Tao was strange and very unreal, not because he took the initiative to evolve, but spontaneously evolved in the dantian, and now, he finally showed some abnormalities.

The Dao fire that exploded into dozens of wisps flowed in the dantian, and no matter how Lu Yifan tried to close them, there was no way to make them merge together, but became more active.

As the local spiritual aura was infused more, the Dao fire became more intense, like a pounding powerful heart reviving.

Mana is the arm and strength of the monk, and the Dao Fire is the foundation of the monk, if the foundation is not stable, it will be like a building overturning, Lu Yifan used various attempts to stabilize the violent Dao Fire, but accelerated the injection of the earth's spiritual aura.

"If I had known, I wouldn't have taken risks, if my realm was higher, maybe there wouldn't be this kind of problem!"

The anomaly came too suddenly, Lu Yifan thought back to all the ways that could appease the Dao fire, and for a moment when he thought about it, the fire actually filled the entire dantian, like a scorching fireball burning in his body.

"What if...... I directly let go of the control of the Dao Fire and let them rush to the Twelve Heaven and Earth Hongqiao...... But I don't have enough mana, I don't have a chance......"

"There is only one way, since it can't be controlled, let them be consumed in the impact of the Hongqiao!"

At the same time as urging the 'Tongming Sword Heart' mental method, Lu Yifan mobilized the unsatisfactory fourth-layer mana of the Dao, and the four condensed warm currents flowed out from the four Hongqiao, all of which were injected into the dantian, and the mana and Dao fire were quickly mixed together, which added a greater load to the dantian.

The mana flowed out of the dantian with the Dao fire, rushing straight up, but there was a steady stream of mana injected into the dantian, so that the dantian was always at a saturated point.

"Click~"

In the fifth heaven and earth rainbow bridge, just like when the world first opened, heaven and earth were attached together, and at the same time that Dao fire and mana rushed in, the sky was rising, the earth was sinking, and the fifth rainbow bridge was quickly formed.

The five rainbow bridges are like a ladder, connected together at the upper end of the dantian, one end of which extends from the dantian and the other end leads straight to the top of the five internal organs.

"Click" "Click" "Click"

Sixth ...... Seventh, the rainbow bridges of heaven and earth were penetrated one after another, the golden and white rainbow bridges were getting higher and higher, and in Lu Yifan's feelings, the intense golden light illuminated the body transparently.

Lu Yifan 'saw' that after the seventh Hongqiao was connected, the Dao Fire in the dantian finally stopped being violent, but the aura of the earth gathered from the arm into the dantian, and the originally weak Dao Fire swelled up again.

A little dark red flash slowly emerged from the darkness at the bottom of the dantian, it was like a translucent red object, all the earth spirit aura was absorbed by it, and then from its interior erupted even more intense Dao fire.

"What the hell is this?"

Lu Yifan suppressed the surprise in his heart and observed it carefully, it was like a real demon being dragged out of the dark abyss, and the intense dark red energy rose around him, and Lu Yifan suddenly had a realization in his heart.

His dantian Dao fire was most likely formed by the energy discharged from such a small piece of dark red keratin, and its interior had a true fire that could allow people to enter the Dao directly.

Although Lu Yifan was very puzzled by it, now was not the time to hesitate, when more flames erupted from the dark red, Lu Yifan also controlled his mana, and continued to wrap the swelling Dao fires, letting them rush towards the Eighth Heaven and Earth Hongqiao.

"Come on, no matter what you are, after I break away from the Twelve Hongqiao, I'll settle accounts with you!"

Yes, Lu Yifan didn't care about how this thing came to be at the moment, and what negative impact it would have on himself, because the strong Dao Fire made him very uncomfortable, and he could only rely on rushing through the Heaven and Earth Hongqiao to consume them all.

When the Dao Fire swelled again, the remaining four Heaven and Earth Hongqiao became fragile in Lu Yifan's eyes, and almost all of them penetrated in a very short period of time.

Only the Twelfth Heaven and Earth Hongqiao is the most special, and Lu Yifan didn't dare to try it easily, because ...... It is the last and most important Hongqiao, and only when it is lit up, the twelve-story Hongqiao can be considered complete.

The first eleven of the twelve heavens and earth rainbow bridges is a relatively abstract concept, they represent all the organs of the five internal organs, all of which are cultivated, which means that the five internal organs are more closely connected, and each of them will have divine powers, store mana, and be the source of power for immortal cultivation.

After penetrating the eleven rainbow bridges, all the mana of the entire body is like a whole, and it has been running freely since then.

But only the twelfth Hongqiao is an exception, because it is specific to one place - Baihui Cave!

Baihui acupoint is located in the middle of the back of the head, if it wants to penetrate with the front eleven rainbow bridges, it must pass through the brain, Lu Yifan hesitated slightly, although the front eleven heaven and earth rainbow bridges are easily penetrated, but the twelfth rainbow bridge is a big problem.

All the classics that Lu Yifan had read told him that he had to complete all the cultivation of the eleven Hongqiao before he could try to open the Baihui Acupoint, which is the twelfth Hongqiao.

But his mana is too weak, but he forcibly connects the first eleven rainbow bridges with the help of the powerful dantian dao fire, and if he hits the twelfth rainbow bridge, he will inevitably fail because of the lack of mana succession.

Baihui acupoint can be said to be the most important place, it represents the seat of the mind and soul, if his mana has been perfected, the failure of the impact will naturally not be fatal, but in the current state, once he fails, it is very likely to become a fool.

The strong Dao fire has always been left near the Baihui Acupoint, and if there is not enough mana to neutralize it, it will burn out the brain.

After all the eleven rainbow bridges were connected, all the earth spirit aura was consumed, but the Dao fire in the dantian was still surging, if it directly hit the twelfth Hongqiao, it would be a gamble!

If you don't try to break through the twelfth Hongqiao, the raging Dao fire will not be vented, and when it floods the dam, it will inevitably corrode and impact the dam to a thousand holes.

The surging dantian Dao fire and mana together have already hit the apex of the eleventh Hongqiao, and they only need to take another half step to reach the blind spot of life...... Cerebrum.

"No matter, him, return before the mana is exhausted,!" As soon as Lu Yifan had an idea, he immediately began to try.

The fierce Dao fire and mana rushed straight to the Baihui Acupoint, and the top of Lu Yifan's head was like a chimney installed, and white mist sprayed out from the back of his head.

When the Dao Fire continued to stalemate above his head, Lu Yifan only felt that his brain was like a lack of oxygen, and his face was flushed, where could he care about retreating before his mana was exhausted?

A steady stream of mana rushed upwards, accompanied by a little bit of reduced dantian Dao fire, mana and Dao fire were stalemate in the Baihui acupoint for a while, and the originally swollen Dao fire in the dantian finally stopped expanding, and they withdrew with the mana, and for a while, the entire dantian appeared empty and dark.

In the empty and dark dantian, a wisp of crimson suddenly broke out, the dark red light illuminated the dark dantian, and a piece of nail-like matter revealed its true body in the red light, but where could Lu Yifan be distracted at this moment to pay attention to it?

When the last wisp of Dao Fire was withdrawn, it also followed the Dao Fire through the golden white heaven and earth Hongqiao, and went up retrograde one by one.

Near the Baihui acupoint, the Dao fire in the stalemate continued to erode Lu Yifan's nervous system and vocal cord muscles, which had already confused Lu Yifan's five senses and thinking.

But when a object rushed straight up the rainbow bridge, the Baihui acupoint, which had always been closed, naturally opened, and the mana poured up in an instant, and the twelve heaven and earth rainbow bridges all penetrated in an instant.

Although the whole breakthrough process was thrilling, it was actually completed in a very short period of time, and when Lu Yifan reacted, all the dantian Dao fire had returned to the dantian, calm and docile.