"Boom—"

As if in response to Du Fei's call, in the distant sky, the golden thunder light began to slowly squirm, and then, its figure also slowly changed.

"Roar—"

The deafening sound of the dragon's groan suddenly sounded, and I immediately saw that the huge golden thunder in the sky turned into a thunder dragon the size of a small mountain.

In the suspension space of the thunder dragon's huge body, his huge eyes flashed with a faint thunderbolt, and without the slightest emotion, he stared at Du Fei below, this kind of momentum was enough to scare anyone into fear.

Obviously, the thunder dragon transformed by this last golden thunder light was the Dan Spirit of the Lei Dan that day!

Staring at the huge thunder dragon suspended in the sky at the moment, Du Fei did not have the slightest fear, he just stood up slowly in mid-air, and then raised his head and stared at the thunder dragon with a slight provocation, and then the sound of wild laughter sounded instantly.

"Boom—"

The thunder dragon also felt Du Fei's provocation, and above the huge body, the thunder was beating wildly, and then, its body roared down in an instant!

"Click, click—"

Between the roar of the thunder dragon, the sound of space cracking sounded, as if this thunder world was about to completely collapse at this moment. This kind of momentum can be called devastating!

Du Fei raised his head and stared at the thunder dragon that rushed down to the sky, and the sound of wild laughter coming out of his mouth became more and more crazy!

"Boom-"

Under Du Fei's crazy laughter, the huge thunder dragon carried a huge shadow, like a meteorite, and slammed into Du Fei's stretched body, and in an instant, the earth-shattering sound sounded instantly. And Du Fei's spiritual body, which had always been able to maintain a human form, was like broken glass, cracks appeared, and then instantly turned into a little crystalline light.

"Roar—"

The thunder dragon let out another whistling sound, and then its body slowly dissipated in mid-air, and finally, it turned into a golden thunder light again, slowly swimming in this thunder world.

"Hahahaha! You can't destroy me! You can't destroy me!"

At the moment when all this was about to end, in the empty space, there was suddenly a burst of wild laughter, and I saw that the crystals that were originally crushed into powder by the thunder dragon were actually instantly pulled by the thunder filaments, and they instantly converged together, but in the blink of an eye, a perfect spiritual body, but it was suspended between heaven and earth again.

The appearance of this spirit body is exactly the same as Du Fei's spirit body before, but at this moment, in the eyes of his spirit body, there are thunder rays of light. The coercion emanating from there is like the power of heaven!

Du Fei's wild laughter slowly disappeared at this moment, and then his eyes narrowed slightly, and in an instant, he sensed the spiritual power in his body, which was full of more violent and fierce power than before!

"Ray—"

With a wave of Du Fei's right hand, thunderbolts roared out almost instantaneously with his movements, as if at this moment, he had become the embodiment of the thunder between heaven and earth.

And at this moment, the golden thunder also seemed to be slightly stunned, and then turned into a thunderbolt and instantly fell on Du Fei's palm. And this time, this thunder light did not bring Du Fei the slightest harm, but a feeling of water and milk blending appeared in Du Fei's heart.

Staring at the golden thunder light that was extremely well-behaved at this moment, a faint smile appeared at the corner of Du Fei's mouth, at this moment, he understood it, at this moment, the unruly Dan Spirit of Lei Dan that day had completely surrendered in front of him! That is to say, the refining of Tian Lei Dan was successful!

As soon as he thought of this, Du Fei finally couldn't hide the ecstasy and excitement in his eyes anymore, and a burst of laughter that was comfortable to the extreme instantly echoed in this thunderous world.

......

"Whew-"

With a slow breath, Du Fei's spiritual body returned to his physical body again, and his eyes that had been closed were also opened at this moment, and then his gaze instantly fell on the Heavenly Lei Dan in his palm.

At this moment, the Heavenly Lei Pill has turned into the size of an ordinary pill, and the kind of coercion that makes Du Fei feel extremely strong has also been fully restrained at this moment. Staring at the elixir in his palm, this time, Du Fei exhaled slowly.

Next, what Du Fei had to do was extremely simple, that is, at this moment, since he had been recognized by the Heavenly Lei Dan Spirit, then, he only needed to use the mixed pill method to refine the Heavenly Lei Dan and complete the last step, then the refining of the Heavenly Lei Dan could be regarded as a success.

It's just that Du Fei didn't do it directly at this moment, but frowned slightly. After getting this Heavenly Lei Dan, he understood the words of Emperor Xuan before. Each of these Heaven and Earth Yuan Dan was filled with extremely terrifying power. And this kind of power that is so pure that it is a little terrifying, if it exists in one's own body at the same time, whether it will blend with each other or repel each other, even Emperor Xuan is not clear, let alone Du Fei.

If there is no way to refine this Heavenly Lei Dan and Ice Lotus Pill in the body at the same time, and maintain the balance between them, then there is no point in obtaining this Heavenly Lei Dan with all your hard work.

"Xiaobai, do you have any ideas?"

Staring at the Heavenly Lei Dan in his hand, after a while, Du Fei spoke softly.

"Congratulations to the master, it only took seven days to conquer this day of Leidan!" Xiao Bai jumped out and said with a little shock. Obviously, even it couldn't have imagined that Du Fei would be able to deal with that day of Lei Dan so quickly.

"What are you doing now? Do you have any ideas?" Du Fei sighed and then said softly.

"This, master, although I am a martial spirit, I don't know everything. Besides, this kind of thing like Heaven and Earth Yuan Dan, ordinary people can get one, and it has already been created in the creation, but you have obtained two, and you want to refine it into the body at the same time, I can't help you with this. Now, the only way you can do it is to try it with the Mixed Pill Method. It's just that if you want to use the Mixed Pill Method, it will be meaningless for you to refine the Ice Lotus Pill before to be indistinguishable from your True Qi, even if it is to say, you need to use the Mixed Pill Method and refine these two Heaven and Earth New Year's Day at the same time, but I am not optimistic about your success rate, master. Xiaobai thought for a moment before spreading his hands and saying, but his words made Du Fei speechless for a while.

"What do you mean is to find a way to make the Yuan Dan, the Ice Lotus Pill, and the Heavenly Lei Dan exist at the same time in the Dantian Qi Sea?" Du Fei hesitated after thinking for a moment.

"That's pretty much it, and the Ice Lotus Pill and the Heaven and Earth Yuan Pill must be in a state of extreme balance, otherwise, it won't do you any good. Of course, if you can get the Heaven and Earth Yuan Dan, which ranks fourth among the Heaven and Earth Yuan Pills, you may be able to completely fuse these Heaven and Earth Yuan Pills. It's just that there is no point in thinking about these unrealistic things now, master, you still have to make your own decision, whether you want to refine both at the same time, or choose only one of the two. Xiaobai nodded.

After being silent for a moment, Du Fei smiled lightly and said: "If you want to get power, you have to deal with certain risks, if you want to stand out in this Kyushu battlefield, I'm afraid I have no second choice, I can only refine the two Heaven and Earth Yuan Dan together." ”

After finishing speaking, Du Fei's palm imprint changed slightly, and after a while, he opened his mouth, and in an instant, the Ice Lotus Pill was spit out by him in an instant and fell on his left hand.

Looking at this scene, Xiao Bai could only sigh and said softly: "In that case, we can only try, and I will help you balance the power between the two, but refining can only rely on yourself, master." Of course, I also kindly remind you that the reincarnation spirit pattern may have a certain effect on balancing the two, so master, you have to completely let go of your spiritual power later!"

"Speaking of mental power. Du Fei thought for a moment, "I seem to have recast my spirit body just now, does this have any effect on me?" ”

"It's not too big an impact, it's just that you're very lucky, master, and at this moment, your spiritual power has been promoted to the realm of the fifth-grade low-level Dan Sect. Xiaobai waved his hand casually.

"Five-grade low-rank Dan Sect Realm?" Hearing this, Du Fei was slightly stunned, and then his face became extremely strange. All along, he has been working the road of martial arts cultivation step by step, and this spiritual power cultivation has long been wasted for some time. But I didn't expect that my spiritual power always broke through at the most inexplicable time, which is quite laughable.

"It's... It should be a good thing, right?" Du Fei said with a smile.

"Of course it's a good thing, at this moment, relying on your Dan Dao cultivation, it is not impossible to sweep this Kyushu battlefield. And the most important thing is that the growth of spiritual power is of great help to you in refining these two Heaven and Earth Yuan Pills. Okay, don't talk nonsense, since you have decided master, let's start!Now, swallow these two Heaven and Earth Yuan Pills at the same time!" Xiao Bai rolled his eyes, and then said helplessly.

"Got it!"

Du Fei nodded, but instantly woke up from the excitement of the promotion of spiritual power, and immediately his body moved, and sat down cross-legged directly on the altar, holding a Heaven and Earth Yuan Pill in one hand for a moment, and then throwing it casually, the two Heaven and Earth Yuan Dan were swallowed by him at the same time.

"Mental power!"

With the entrance of the elixir, Xiao Bai's voice sounded, and Du Fei was almost at the center of his eyebrows at the same time, and suddenly there was a surging spiritual power roaring out, and then instantly rushed into Du Fei's body, and then, in an instant, Du Fei's dantian qi sea was enveloped.

And almost at the same time, two Heaven and Earth Yuan Dan appeared in the Dantian Qi Sea at the same time.