As Emperor Xuan's voice fell, the hollow eyes of the Ninth Heaven Demon King fell on Du Fei's body for the first time, as if he had just put Du Fei in his eyes at this moment. Before, Du Fei was just a little bug flying in front of him.

"Surprised!? Emperor Xuan, after so many years, are you also stupid, a person who is not even a junior of a martial saint, what qualifications do you have to surprise me? It is a strong martial saint, I don't know how many I swallowed back then! If you want to say it, this kid is really weak to surprise me! If this kid is the back hand that you are proud of, then I can't help but wonder how far you human beings have degraded after so many years!" The Ninth Heavenly Demon looked at Du Fei with a fierce and evil gaze for a moment before he said with a cruel smile.

Being watched by the evil gaze of the Demon King of the Ninth Heaven, even with Du Fei's concentration, he couldn't help but feel a tingling in his scalp at this moment. It's just that after slowly exhaling a breath, he also grinned below, and then stepped on the soles of his feet, and in an instant, a faint, but extremely pure aura suddenly diffused out of his body.

"Ice Lotus Pill!?"

Sensing the breath on Du Fei's body, the Ninth Heaven Demon King suddenly lost his voice, and this time its voice was full of a bit of horror. It couldn't have imagined that the back hand that Emperor Xuan had prepared for himself this time was actually another Heaven and Earth Yuan Dan!

In the entire Xuanwu Continent, there are only thirty-three Heaven and Earth Yuan Dan, all of which are unavoidable divine objects, and the probability of two Heaven and Earth Yuan Dan meeting can be said to be infinite equal to zero.

"What's the matter?, Venerable Ninth Heaven Demon King, this gift I prepared is not bad, right?" Emperor Xuan's figure was suspended in the air, staring down with an indifferent gaze, as if smiling.

"You!Emperor Xuan, don't be too naïve! If you were in your heyday, these two Heaven and Earth Yuan Pills together might really be able to completely destroy me, but now, I'm afraid you can't do it, right?" The Ninth Heaven Demon King quickly woke up from the initial shock, and immediately said viciously. It's just that this time there was a little more color in his voice.

"Hehehe, this emperor naturally knows that none of you Heavenly Demon Kings are easy to deal with. If you were in your heyday, let alone two Heaven and Earth Yuan Pills, even if there were a few more, maybe they wouldn't be able to completely destroy you...... However, you have forgotten one thing! This emperor is not in his heyday, and you have also been suppressed for countless years, is it still not in the heyday? Now you are afraid that you are so weak that you are not as good as a heavenly demon general, right?" Emperor Xuan looked at the ninth heavenly demon king below indifferently, and said lightly, "The grievances between us, there should be an end today, since it has come, then, let this emperor let you completely free yourself!"

When the words fell, Emperor Xuan had already stepped out, and then the mark in his hand changed rapidly, just in the blink of an eye, thousands of rays of light burst out from his body, directly illuminating this pitch-black cave extremely brightly.

And under the illumination of this kind of light, the black qi wrapped up and down the body of the Ninth Heaven Demon King instantly seemed to be vaporized, dissipating in the air qi, and the exposed flesh was also eroded away in an instant when it encountered this light.

And in this kind of light, there are thousands of thunderbolts that continue to rage, and the thunder roars down like a waterfall, spreading towards the place where the Ninth Heaven Demon King, who has gradually revealed his figure at this moment.

"This is, Demon Suppression Technique!" Looking at this scene, Du Fei's pupils shrank slightly, and he already recognized the technique used by Emperor Xuan at the moment.

"Little friend, you can also shoot!"

After the thunder swept away, Emperor Xuan said lightly.

Hearing this, Du Fei sat down cross-legged in the air, and the true qi in his body had been instantly activated by him to the extreme, and then, between the changes in the imprint in Du Fei's hand, a pillar of light containing ice crystals appeared instantly, and then burst out like a ray towards the place where the Ninth Heaven Demon King was located below. With Du Fei's strength, naturally there is no way to control the Heaven and Earth Yuan Dan like Emperor Xuan, and what he can do at this moment is indeed his ultimate.

"Whew-"

As the pillar of light controlled by Du Fei merged into the sky of light and thunder, the surrounding light seemed to become brighter, and the nine thunder chains that originally locked the middle of the cave also burst instantly at this moment, turning into Dao Dao Thunder and slashing downward, the offensive composed of such rays and thunder waves made people frightened!

"If you want to destroy this king, it's not that easy!"

The Ninth Heaven Demon King obviously couldn't imagine that this Xuan Emperor actually used such a method of breaking the axe and sinking gold, and even destroyed the Heavenly Thunder Demon Suppression Array that originally sealed and suppressed him, just to enhance the probability of killing himself. As an extraterritorial Heavenly Demon, although his vitality was extremely tenacious, this Ninth Heavenly Demon King also understood that he was extremely weak at the moment, and in the face of such an attack, even he did not have the confidence to stop it. And the most troublesome thing is that in the attack, there are two kinds of Heaven and Earth Yuan Dan breath, and this breath is like poison for these extraterritorial heavenly demons!

"Fight!"

"Heavenly Demon Devouring the Sun!"

The overwhelming black qi swept out of the body of the Ninth Heaven Demon King, and a huge mouth was violently cracked on the extremely huge head, and in the huge mouth, the evil aura rushed to the face, and then swallowed fiercely towards the thunder attack above.

Obviously, in order to resist Emperor Xuan's attack, the Demon King of the Ninth Heaven also began to fight hard.

"Boom-"

In the next moment, the light, the thunder and the huge black mouth collided fiercely, like two meteorites across the sky, colliding with each other!

The indescribable energy fluctuations spread wildly at the moment these two attacks touched, and then in the huge cave, cracks suddenly appeared in all directions, and from those cracks, there were void magic thunder permeating out. Obviously, this kind of fluctuation has not only shattered the cliff itself, but directly tore the space here.

"Hmph-"

Du Fei, who was sitting cross-legged, suddenly turned pale, and then a sense of weakness appeared in his heart, speaking of which, his strength was like an ant compared to this Xuan Emperor and the Ninth Heaven Demon King, although at this moment these two great powers were in an extremely weak state. But with Du Fei's strength to get involved in such a battle, it was really barely enough.

"Master, although the true qi in your body is fused with the Dan Qi of the Ice Lotus Pill, it is much richer than that of ordinary people, but I am afraid that this kind of consumption will not last long!" Xiao Bai's voice suddenly appeared in Du Fei's mind, obviously, it was also quite worried about Du Fei's state.

"Xiaoyou, can you still stand it!?" Emperor Xuan in front of him also glanced at Du Fei with a little worry. Although Du Fei's strength at the moment is indeed not enough in his opinion. However, if you want to completely destroy the Ninth Heaven Demon King in front of you, the power of the Ice Lotus Pill is not lacking no matter how good it is.

In a sense, the longer Du Fei's staying power, the greater the chance that Emperor Xuan would be able to kill the Ninth Heaven Demon King.

"Stand it!"

Hearing Emperor Xuan speak, Du Fei said in a low voice. Immediately, he gritted his teeth slightly, and then the ring in his hand flashed slightly, and a pill appeared in front of him.

"Hui Tian Dan?" Seeing Du Fei's action, Emperor Xuan was also slightly stunned, obviously he didn't expect Du Fei to have such an elixir at hand, but he was immediately relieved, although the effect of Tian Dan this time is not to restore true qi, but it can also make up for the lack of true qi in the body in a large area, but it is a bit too wasteful to use it at such a time. It's just that at this moment, things have developed to this Du Fei, but Du Fei can't help but feel distressed!

With a casual throw, after swallowing this Tiandan, the mark in Du Fei's hand changed rapidly again, and suddenly, an increasingly brilliant pillar of true qi light shot out from his body again, and then merge into the energy wave in front of him.

"Good boy, it seems that I didn't make the wrong choice. Seeing this scene, Emperor Xuan also nodded slowly, and then he came back to his senses, and the mark in his hand was also slowly changing, and with the change of the mark in his hand, more and more brilliant light mixed with thunder continued to diffuse.

"Boom, boom—"

The deafening sound of energy explosions continued to reverberate in this space, and that kind of fluctuation made the entire cave tremble constantly.

Under the power of the two Heaven and Earth Yuan Pills, coupled with the Xuan Emperor's general means of seizing the heavens and the earth, the evil huge head was constantly retreating at this moment, and the roar of the Ninth Heaven Demon King was also constantly coming out.

After all, it has been sealed and suppressed for countless years, and now in the face of such an offensive, it is undoubtedly extremely difficult to resist.

"Little friend, the final blow, completely solve this Heavenly Demon King!"

Emperor Xuan's eyes flashed with a flash of essence, and then with a loud shout, the mark in his hand condensed violently, and the Heavenly Lei Dan, which had been integrated into his body, instantly shot out and crashed forward!

"Go!"

At this moment, a trace of ruthlessness flashed in Du Fei's eyes, and then he opened his mouth, his handprint changed, and suddenly the Ice Lotus Pill in his body also shot out in an instant, drawing a faint ice line, and slammed towards the place where the Ninth Heaven Demon King was below!

The moment these two Heaven and Earth Yuan Dan appeared, the offensive that had been going on was finally urged to the most violent point, and then, an extremely terrifying and extremely pure destructive force swept through this cave in an instant!