"Whew-"

The purple ancient flame, between the clapping of Du Fei's hands, was constantly torn out cracks, and then revealed a rather spacious passage. And Du Fei's figure followed these passages, constantly walking towards the depths of the ancient holy mountain.

However, after about three days, this march still had no effect. What appeared in front of Du Fei was always a purple ancient flame that was almost infinite. And these ancient holy flames had no meaning to Du Fei at this moment.

However, this tedious search is even more desperate than the previous reshaping of the source.

In the process of reshaping the origin, Du Fei at least knew that after a certain amount of time, his pain would end, but in this search, Du Fei didn't know when it would be an end.

Boring, monotonous, and boring, it seems to make up all the colors of this world, which makes people sigh.

"I understand now, why the people of the Ancient Tianfeng Clan have not detected everything in this Ancient Holy Mountain until now, and now it seems that the reason is very simple, that is, this kind of behavior is really monotonous and boring, and not many people can hold on. After Du Fei broke out of a fire path again, he sighed and muttered in his heart.

"Moreover, no one knows if there are other more powerful flames under this ancient sacred fire, so generally speaking, no one will have the patience to probe like this. Xiao Bai also responded in Du Fei's heart, "However, master, you don't have to give up so quickly, because I vaguely noticed that there seemed to be some extremely strange auras below, although these auras were weak, but they seemed to be stronger than these ancient holy flames!"

"What!?stronger than the Ancient Flame!?" Hearing this, Du Fei's heart shook slightly, and then his gaze quickly fell below. If that's the case, then it's likely that this is what I've been looking for.

"Which direction?"

"No, it's right below you, master, can't you sense it?" Xiao Bai seemed to pout.

Hearing this, Du Fei exhaled slowly, and his gaze instantly fell to the place below, but he didn't seem to see anything except the purple flames.

However, Du Fei did not give up so much, this time, he did not tear apart the sea of fire around him, but his body moved, and he quickly rushed down.

"Whew-"

This kind of straight downward movement lasted like this for seven days, and the boredom of this period of time had reached the point of mental breakdown, even Du Fei had the idea of giving up like this countless times. It's just that fortunately, Xiaobai reminded Du Fei from time to time, so that he didn't give up or collapse because of this.

In the end, this downward descent had made Du Fei's spirit a little dull, as if he could no longer do anything else except sneak downward.

"Poof—"

I don't know how long the downward movement lasted, and suddenly, Du Fei only felt that his eyes were dark, and the purple flames around him all disappeared, and Du Fei's figure was subconsciously paused, and a look of confusion appeared on his face.

Because he was accustomed to the relationship between the purple ancient flames, there was no ancient flame around for a while, and Du Fei was not used to it.

After a moment of slight distraction, Du Fei's gaze looked in all directions.

At this moment, Du Fei was in a pitch-black space, and not far above his head, there was a sea of purple fire like a mirror. Below, however, there was infinite darkness, and even with the light of the purple sea of fire, there was still no way to see clearly what was underneath.

"It's... Is it the space that exists under the Ancient Sacred Flame?" Du Fei's pupils shrank slightly after he realized this, and a trace of excitement flashed in the depths of his eyes.

Before, I was just boring searching, but now I finally found a place, although I can't confirm it, there is a flame in this place that is stronger than the ancient flame. But at least one thing is certain, and that is that he has proved that there is something else in the deepest part of this ancient sacred mountain.

"Master, there seems to be something down there......" Xiaobai's voice also became a little more solemn at this moment, and then it said softly.

"Anything else......

Hearing this, Du Fei nodded slowly, and then the soles of his feet were slightly in the void, and his figure slowly landed downward.

This time, Du Fei's speed was slowed down extremely slowly, and Yuan Li and Nian Li were also urged by him at this moment, and then he cautiously landed downward.

However, during this whole process, Du Fei did not come into contact with any danger, and it was not until the soles of his feet fell to the ground that his heart was full of surprise.

You have actually reached the bottom of the Ancient Sacred Mountain?

After standing in place and closing his eyes and pondering for a moment, Du Fei slowly opened his eyes again, and this time, because he was used to the relationship between the dark, he could vaguely see something from the darkness.

At this moment, Du Fei vaguely saw that the bottom of this ancient holy mountain was like an inverted hourglass, wide at the top and small at the bottom. So my own position is actually in the center of the bottom space.

However, in this place, there is no other special existence, which makes Du Fei feel a little puzzled.

After slowly raising his feet and walking in this space for a while, Du Fei slowly raised his head and stared at the place above.

"Huh?"

However, at the moment of raising his head, Du Fei's pupils suddenly shrank, and there was an incredible look in his eyes.

Because, at this time, he found that above his head, there was a huge black skeleton suspended in the air at this moment! The skeleton was faintly showing a faint colorful color, making it clear that this should be the corpse of an ancient heavenly phoenix. However, on top of this skeleton, there was a layer of black flames, and these flames basically covered up the light that this ancient Heavenly Phoenix corpse should have existed.

But what makes people feel strange is that there is still a faint trace of vitality in this corpse that should have been completely fallen.

"What the hell is this ......"

After Du Fei's gaze stayed on the corpse for a moment, his gaze quickly fell on those black flames, and in the next moment, he knew that the special change in the corpse was probably caused by these black flames......

"It's ......"

Xiaobai's voice was full of astonishment, and it also sounded abruptly at this moment.

"Immortal Flame!?"

"Immortal Holy Fire!?" Hearing this, Du Fei was slightly stunned, he just subconsciously felt that this name was so domineering, "What is this?"

"Master, do you know why the Ancient Heavenly Phoenix Clan's Zhen Clan Treasure Book is called the Heavenly Phoenix Immortal Sutra!?" Xiao Bai seemed to breathe a sigh of relief before he asked rhetorically.

"I don't know. Du Fei replied honestly.

"It's very simple, because, this Tianfeng Immortal Sutra was created by the ancestor of the ancient Tianfeng clan in the primeval period, it is said that the cultivation of that ancestor is extremely terrifying, reaching the realm of immortality and immortality, it is said that every time he falls, he can be reborn after the fire! Later, some people noticed that the reason for his immortality and immortality was because of the immortal flame in his body! In the end, it seems that the extraterritorial Heavenly Demon Clan, after using tricks to extract the immortal flame in his body, he finally fell! And the Heavenly Phoenix Immortal Sutra was actually created by him! Xiao Bai said slowly, "And if I'm not mistaken, these black flames should be the legendary Immortal Flame! Master, if you can refine a trace of Immortal Flame into your body, then not only will you be able to cultivate the Heavenly Phoenix Immortal Sutra to the realm of Nine Patterns Returning to One, maybe, you will also be able to have an immortal body like the ancestor of the ancient Heavenly Phoenix Clan, from now on!"

"I see!"

Hearing Xiao Bai's explanation, Du Fei's pupils also shrank sharply at this moment, if this is really the case, then the preciousness of the immortal flame in front of him is really a little beyond imagination!

"However, this immortal flame looks ordinary at the moment, and there doesn't seem to be anything special about it, but if you touch it rashly, even with your strength at the moment, you may be able to turn into ashes in an instant...... Therefore, just like the previous method of reshaping the origin, it is most likely not to be used at this moment. Xiaobai hesitated slightly.

"If we can't use it, do we have any other way?" Du Fei frowned.

"I can't say no...... If I'm not mistaken, if you can find a way to get a trace of the immortal flame, and then keep it in your body, slowly cultivate, and one day, when the immortal flame is strong enough, maybe you can transform all the ancient flames that exist in your body at this moment into the immortal flame, and at that time, perhaps, it will be the time for the master of your Tianfeng Immortal Sutra to be completed. Xiaobai said cautiously.

"Is there a trace of fire?" Hearing this, Du Fei nodded slowly, and now it seems that only this method is the safest and most secure!