Du Fei's mind sank into his dantian qi sea, staring at the yin and yang spirit pill in front of him with a slightly strange gaze, and for a while he had a feeling that he had no way to take it.

After absorbing a trace of Du Fei's spiritual power and true qi, a faint light began to appear on the surface of this Yin Yang Spirit Pill, these rays of light were like silk threads, staggered and horizontal, as if they were changing at any time, and if they looked at it vaguely, it was as if there was a formation on the surface of this pill.

After looking at it carefully for a while, Du Fei's eyes flashed with a thick look of surprise, the formation on the surface of this Yin Yang Spirit Pill seemed to be constantly changing its form at any time, and each form was completely different from what he had seen before.

"What's going on!?" After a while, Du Fei exhaled and glanced at Xiao Bai beside him and said lightly.

Xiao Bai was silent for a moment before he whispered: "I don't know very well, but I can see that the formation above this Yin Yang Spirit Pill seems to have a function of combining the power of true qi and spiritual power into one, but now there is too little information at hand, and I can't analyze it." However, if I expected it correctly, the ability of this Yin Yang Spirit Pill came from this formation, not the pill itself...... This can also explain why there are only six grades of such an anti-heaven elixir. It is estimated that the pills are just a disguise, and this formation is a really good thing!"

Hearing Xiaobai's analysis, Du Fei also nodded slowly, Xiaobai's analysis and his own guess are inseparable, and only in this way can we explain why there is no change after this pill is swallowed.

"What should I do next? I can't just keep looking at it like this, right?" After staring at the Yin Yang Spirit Pill for a moment, Du Fei spread his hands and said.

"Looking at this situation now, it is basically impossible to swallow and refine this pill, but there is still some possibility of trying to control the formation above this pill. Xiaobai thought for a moment and said.

"What's the matter?" Du Fei frowned.

"At this moment, this formation is still too small, I can't perceive it, if this formation is a little stronger, I should be able to barely sense where the center of this formation is, as long as I find the center, I naturally have a way to control this formation. Xiaobai said lightly.

"What do you mean, just let me feed this formation?" Hearing this, the corners of Du Fei's mouth twitched again.

Xiaobai smiled and didn't say anything, but the taste in that expression was self-explanatory.

Hearing this, Du Fei could only sigh, and immediately his mind moved slightly, and suddenly a large amount of spiritual power and true qi rolled in instantly, and then directly poured into the Yin Yang Spirit Pill.

For the energy sent to the door, the formation above the Yin Yang Spirit Pill was not polite at all, and it was directly absorbed, and with its absorption, the formation became brighter and brighter, and in the end, it directly broke away from the surface of the Yin Yang Spirit Pill, forming an independent formation.

And at the moment when this independent formation took shape, the Yin Yang Spirit Pill also instantly turned into a strange energy and integrated into the formation.

"It's not good! Master, don't stop your spiritual power and true qi, this formation is extremely unstable, and it may dissipate at any time!" Seeing this scene, Xiao Bai's face changed, and his body had already rushed out, and he instantly fell to the sky above the formation, and then looked at the formation below with burning eyes, as if sensing every change in it.

Seeing this scene, Du Fei also frowned slightly, but he didn't say anything, with a slight wave of his palm, a wave of true qi and spiritual power suddenly permeated out.

It's just that the demand for spiritual power and true qi in this formation is almost unlimited, and even with Du Fei's foundation, under this kind of consumption, he also feels quite stressed, and it is estimated that if he changes to other people of the same level to do this kind of thing, it will not take long for him to lose himself.

"Whoa—"

Du Fei's true qi continued to pour into the formation, and Xiao Bai's eyes were still burning. I don't know how long this situation lasted, but suddenly Du Fei's face changed slightly, and it was extremely ugly in an instant. Because he found that his true qi and spiritual power were already in a state of deprivation at the same time, that is, if he continued, his origin would be damaged. However, under such circumstances, Du Fei would not allow it to happen under any circumstances.

"Uhhh

At a certain moment, the spiritual power and true qi were cut off at the same time, and at the same time, the formation also trembled slightly, and then slowly turned into nothingness, dissipating in Du Fei's dantian qi sea.

"It's... Is this gone?" Seeing this scene, Du Fei was also speechless for a while, who would have thought that his true qi and spiritual power had been absorbed, but this formation, he actually said that it was gone, it was gone!

"Gone?" Xiao Bai was also slightly stunned before he reacted, and then he glanced at Du Fei with a sad expression.

"If I continue, I won't have to go out of the city tomorrow. Du Fei was silent for a moment before he said lightly.

Hearing this, Xiao Bai could only nod his head, sighed and said: "It's a pity that this Yin Yang Spirit Pill, it is estimated that this thing has existed for too long, and the formation above is also a little unstable, otherwise, how can this situation occur." ”

"What's the gain?" Although he can't believe in Xiaobai Du Fei, he has confidence in the system.

"This, it can't be said that there is none, but I don't know if this thing is complete, master, you can understand it yourself. Xiaobai nodded, and then stretched out his finger to support his eyebrows.

In an instant, a surging flow of information instantly poured into Du Fei's mind, and pictures appeared instantly. In these pictures, the sketches of light strokes are extremely complex, and in the end, a formation is directly formed, and with the addition of another stroke, there are thousands of changes in this formation.

After a while, Du Fei woke up from the shock, he opened his eyes, glanced at Xiaobai, who had come to the outside of the body at this moment, and said with a little strangeness: "You actually remember all the changes in that formation?"

"It's almost, it's just that there is obviously a follow-up to this formation, what we know now is only half of its changes at most, but if you give me some time, with the previous changes as the foundation, it is not difficult to guess the later changes. And the effect of this previous stage of the change formation seems to be fusion, fusing true qi and spiritual power into one to form another kind of power, this kind of power seems to be called Yuan Force, and this formation should be called the Yuan Ancient Array!" Xiao Bai said with a serious face.

"Transformation Yuan Ancient Array?Yuan Force?" Hearing this, Du Fei nodded slowly, and then he took a deep breath, and after recovering a little of his true qi and spiritual power, he was shocked, and his palm slowly spread out.

With the control of his mind, driven by his true qi and spiritual power at the same time, suddenly, a palm-sized formation appeared in his palm. If you look closely, this formation is the same as the previous formation above the Yin Yang Spirit Pill, and with the infusion of true qi and spiritual power, there are thousands of changes. It is estimated that if it were not for the system, ordinary people would not be able to remember these changes instantly, let alone use them.

"Boom-"

A moment later, a faint golden pillar of energy instantly diffused out from the formation, and this energy obviously contained true qi and spiritual power, which seemed extremely surging and atmospheric. And Du Fei could also sense that this kind of fused energy was really much purer and stronger than the energy after his forced fusion!

"This is, Yuan Li!"

Silently feeling the change in this energy, after a while, Du Fei smiled slightly, crushed the formation in his palm, and then his gaze slowly fell on the night sky again.

"Zhang Tian! This time, I want to thank you! If it weren't for your persecution, Du would still be unable to control this kind of power!"

.......

In the silent Qi City, in the quiet attic, Mu Tingcheng stood against the railing, his faint gaze fell to the north, and only after a moment did he sigh softly: "In today's auction, I originally thought that it would be a battle between our Heavenly Sect and the dynasty that went to Japan, but I didn't expect that after this Du Fei appeared, we would become complete passers-by......"

Speaking of this, Mu Qingcheng also smiled a little helplessly.

"Then, do we still want to make a move? After all, Lei Dan was too important that day, if Zhang Tian really got it, we people probably wouldn't end well. Mu Hao stared at the night sky and said lightly.

After thinking for a while, Mu Qingcheng nodded slowly and said: "Tomorrow, you and I will take a look at the situation, I think, I'm afraid it's not just us, many people are determined to get that map, Zhang Tian actually provoked Du Fei in that situation, this kind of behavior is very unwise!"

"Not really, if he can kill Du Fei with thunder, then maybe he will be able to shock the rest of the people, and then leave calmly...... However, if the battle between him and Du Fei comes to a stalemate, I am afraid that the outcome will be unpredictable. Perhaps, this No. 1 overlord powerhouse in the Western Regions will fall into the end of being hunted down by countless people. Mu Hao didn't seem to be optimistic about Zhang Tian, but shrugged his shoulders and said.

"Hunt down Zhang Tian, this is an extremely interesting scene......" Mu Qingcheng smiled lightly, and then didn't say anything more, but his gaze fell slightly on the night sky.

In another place in the city, Mo Yazi also slowly raised his head and stared at the sky, and at this moment, there were more than a dozen people wearing Xuanyi behind him, all with cold faces.

After staring at the sky for a moment, Mo Yazi suddenly smiled lightly, and a faint voice came out.

"Tomorrow, we want to get the map of Tianleidan, no matter what......"