At this time, a drop of spiritual milk dropped, and in an instant, the entire cave was filled with extremely rich aura, and Chen Yufan absorbed it unwillingly, this aura was really too pure.

However, in the next moment, Chen Yufan felt a wonderful change in his body, he found that the internal qi in his body was actually slowly changing, changing into another force, this power was much stronger than the internal qi, if his previous internal qi was a stream, then at this moment this force is a rushing river, and the two cannot be compared at all.

"What kind of power is this, so powerful?" Chen Yufan was extremely puzzled, because this was the first time this situation had occurred, he didn't know if this situation was good or bad, but as time passed, one percent of the internal qi in his body had been transformed into this power, which made him even more confused.

"Could it be that this is true Yuan power?"

Although he didn't know how strong the True Yuan Force was, in order to break through the Innate Realm, he had to transform his internal qi into True Yuan Force, and then open up a dantian under his lower abdomen, which was a true Innate Realm martial artist.

The more Chen Yufan thought about it, the more likely it became, but his eyes were getting brighter and brighter, so that he could break through to the innate realm with this aura, and then the iron-backed steel bear would not be his opponent.

Chen Yufan sat down cross-legged, running the exercises, this exercise is the practice of the ancestral dragon, and it is also the companion exercise that belongs to it, the Nine Tribulations Divine Dragon Canon, at this moment he fused the true bones of the ancestral dragon, and he can also practice the corresponding exercise.

The exercise was running, and at this moment Chen Yufan knew the horror of this exercise, and the aura in the entire cave was almost instantaneously surging towards his body, and a storm of aura was actually formed, which surprised him who had to really cultivate.

After the surprise, there was a surprise, because there was such an anti-heaven exercise, then it was a charcoal in the snow for him, Chen Yufan's cultivation made the movement make the iron-backed steel bear wake up in horror, and then looked at Chen Yufan who was cultivating with a shocked face.

After a while, all the spiritual energy in the entire cave was absorbed by Chen Yufan, so that half of the internal qi in his body had been transformed into true yuan.

Chen Yufan slowly opened his eyes, although he had not converted all the internal qi in his body into true yuan, he had already transformed half of it, and his strength had increased a lot.

"It seems that I have to absorb a drop of Earth Soul Emulsion, otherwise I won't be able to convert all the internal qi in my body into true yuan."

Chen Yufan muttered in a low voice, and a pair of eyes looked at the small pool of earth soul milk.

As for the iron-backed steel bear, he was also wary of him at the moment, because Chen Yufan gave it a dangerous aura, except for this, the movement that Chen Yufan had cultivated just now really frightened him.

"It seems that I really want to fight the iron-backed steel bear, since this is the case, then I will also verify the strength that has skyrocketed in the past few years."

Chen Yufan's eyes flashed, and he shot instantly, without the slightest fancy, and punched out, he didn't need so many moves for the iron-backed steel bear, and the attacks were extremely direct.

"Roar!"

Seeing Chen Yufan attack, the iron-backed steel bear roared angrily, but its pupils still had a hint of fear when they looked at Chen Yufan.

However, when Chen Yufan punched the iron-backed steel bear, he felt that he was hitting a steel plate, and his fist hurt for a while, and the alchemy technique immediately worked, and the pain disappeared.

And the iron-backed steel bear also took a big step back under Chen Fu's punch, and a heart-piercing pain entered its brain, instantly annihilating its last bit of sanity.

The iron-backed steel bear was furious, although it already had spiritual intelligence, but it was also easy to lose its mind, because it was only a first-order spirit beast, and it could not control its own nature, everything was the instinct of the beast that commanded it.

In a rage, it slapped it down, but in Chen Yufan's eyes, it was as slow as a turtle, and it dodged with a dodge.

After dodging, Chen Yufan swept out with one kick, at this moment he had already used the Eight Pole Collapse, although the defense of the iron-backed steel bear was very strong, but the Eight Pole Collapse caused damage in the body, so it can be said that he ignored its defense at all.

After a while, the iron-backed steel bear was blue and purple, although he was furious, but Chen Yufan was like a loach, it didn't hit at all, and he had no strength in his life but nowhere to go.

Chen couldn't be extremely uncomfortable at the moment, although he ignored the defense of the iron-backed steel bear, but its body was extremely strong, even the internal strength of the Eight Poles Collapse only caused some obstacles to it, and he had to bear the shock he suffered when attacking the iron-backed steel bear, if it weren't for the non-stop operation of the alchemy, he would have been unable to support it.

At this time, Chen Yufan said to the iron-backed steel bear: "Stupid bear, let's stop fighting, I only need a drop of earth soul milk to break through now."

Seeing Chen Yufan talking to himself, the iron-backed steel bear was very dazed and didn't understand the meaning, but it also restrained its momentum at the moment.

Chen Yufan didn't care whether the other party understood or not, he walked directly to the small pool, took out a drop of Earth Soul Milk, and then took it directly, because the Medicine of Earth Soul Milk is extremely mild, and ordinary people have no problem taking it.

The entrance of the earth's soul milk, in an instant, the medicinal power filled the limbs and hundreds of remains, Chen Yufan hurriedly sat down and quickly ran the Nine Tribulations Divine Dragon Classic, and the medicinal power was also rapidly refined, and the internal qi in the body was also rapidly transformed into true yuan power, as long as the internal qi in the body was all transformed, the last step would be carried out, which was to open up the dantian.

The iron-backed steel bear saw Chen Yufan take out a drop of Earth Soul Milk and take it and began to cultivate, and it didn't continue to go up to him to trouble him, but also went to a corner and prostrated down and began to sleep, for it, sleeping was cultivating.

Almost half an hour has passed, and at this moment, Chen Yufan's internal qi has all been transformed into true yuan power, and the next step is to open up the dantian.

Chen Yufan put all his mind on opening up the dantian, because the dantian is the most important thing for martial artists above the innate realm in addition to life, if the dantian is broken, then he will become a wasted person, and he will not be able to continue to cultivate martial arts.

Chen Yufan used his mind to control the true yuan in his body, and then turned into two forces to tear the closed dantian in his body, which was an extremely terrible torture, more than a thousand times more painful than his previous broken bone refining body.

Chen Yufan gritted his teeth tightly, because after passing this level, he was not far from the innate realm, and it can be said that the innate realm is the beginning of martial arts.

Sweat wet his clothes, as if he had just been picked up in the water, and a large pool of sweat gathered on the ground, not only that, the severe pain made Chen Yufan's face pale, like a blank piece of paper, and his whole body trembled slightly.

This pain lasted for half an hour, this half an hour was as long as half a century for Chen Yufan, fortunately he finally succeeded in opening up, the dantian just opened up, and suddenly all the true yuan power in the meridians began to converge towards the dantian, as if the sea embraced all rivers.

The transformation of internal qi and the opening up of the dantian, the last step is to open up the sea of gods and condense the soul seed, Chen Yufan is not worried about the condensation of the soul seed at all.

His mind calmed down, feeling the rules between heaven and earth, although he was a mortal-level talent, but after fusing the ancestral dragon's true bones, everything changed.

Time passed slowly, half a month passed in a blink of an eye, at this time, an invisible wind blew in the cave, this wind was all condensed by soul power, forming a terrible soul storm, if there was a strong person here at this time, he would definitely be stunned, because this is not at all something that should be possessed to break through the innate realm.

This storm lasted for half an hour, and was finally swallowed up by Chen Yufan, and in his divine sea, a white giant egg was slowly condensing.

Chen Yufan didn't know all this, he seemed to be asleep, and his breath suddenly burst out after condensing the giant egg, and suddenly the sleeping iron-backed steel bear jumped up like a cat with its tail stepped on, staring at Chen Yufan with a frightened face.