The two streams of air intertwine with each other, forming a whirlpool-like existence

Stalemate!

"If it weren't for the similarity of energy and breath, I'm afraid it would be very troublesome. Lin Feng gritted his teeth to resist the impact of Neidan's energy, and secretly said that he was lucky.

Fortunately, he was careful and raised his soul heart to the third order before absorbing the 'Inner Dan', otherwise, it would definitely be difficult to withstand this astonishing amount of energy. The Black Mist Demon Dragon's ferocity and ferocity made even its 'Neidan' exactly the same, attacking frantically in the sea of souls.

Never die!

The battle between the two air currents gradually escalated, turning from a whirlpool to a hurricane.

The scattered and uncontrolled flow of air swirled in the soul heart's rotation, swirling like smoke.

"It can be absorbed!" Lin Feng felt joy in his heart, and the heart trick on the fourth page of "Soul Secret" was unleashed, assimilating an astonishing energy aura. Even if it was just a little bit of uncontrolled airflow, the energy intensity was far greater than the amount in the 'Black Mist Crystal'.

This breath of pure energy made the soul heart hum lightly.

But it rotates faster, and the absorption speed continues to increase!

...

The battle continues.

It must end with the defeat of one side.

As Lin Feng's soul strength continued to increase, the situation of the battle began to tilt the scales.

Lin Feng, slowly take the advantage!

The powerful energy of heaven and earth gradually suppressed the 'Inner Dan', and the violent blowing of the hurricane caused the energy flow of the Inner Dan to be assimilated more and more, wrapping a thick layer of black mist around the soul heart, which was absorbed and assimilated with the rotation of the soul heart.

"Huh~~" Lin Feng's face softened slightly.

The most difficult step has been taken.

The illusory 'Black Mist Demon Dragon' in the sea of souls was like a paper tiger with grinning teeth. No longer a threat.

Since then, the sea and the sky!

The rest is like refining the 'Black Mist Crystal', just need to ...... slowly

Absorb this vast amount of Inner Dan energy.

...

Exactly six hours!

The black mist emitted from Lin Feng's body had already dissipated.

"Smack!" opened his eyes, his eyes flashed with a bright light, and the corners of Lin Feng's mouth were drawn with a satisfied smile.

It was quite satisfying!

"The soul heart grade has increased by nearly one percent!" Lin Feng clearly felt the change in the soul heart. In the thick ball of light, the 'heaven and earth energy' that is entwined like a nebula is more abundant and more solid. Full of liliang feeling, there is a kind of extreme explosiveness.

It's just that......

Lin Feng clenched his fists and frowned slightly. "Having absorbed the 'Black Mist Demon Dragon', there is an inexplicable bloodthirst and impulse in my mind?"

While assimilating the 'Black Mist Demon Dragon' Neidan, he seems to have been slightly affected.

"The flaws are not hidden. Lin Feng smiled indifferently.

This fluctuation in consciousness can be completely controlled by oneself.

The important thing is that the improvement of the soul heart level is far beyond my expectations!

"The Black Mist Demon Dragon's 'Neidan' is indeed nourishing. "Lin Feng felt a burst of joy, the 'Soul Heart' level, which was originally expected to take more than two months to improve, had improved by nearly one percent in just six hours by refining one 'Inner Dan'!!

What does this mean?

"As long as there are ten 'Inner Pills', my 'Soul Heart' will be able to raise the level again!" Lin Feng's eyes were extremely bright.

※※※

Leave. No more rushes.

Lin Feng changed his goal and became -

Slay the Dragon!

"Lingguang flashed!" Lin Feng shouted in a deep voice.

I saw that the four 'auroras' turned into a huge staggered 'diamond', and the flickering cold light directly broke through the black fog shroud, and there was no need to use the 'deceleration space' at all, and the powerful power broke through the dark light ball of the black fog demon dragon. Bombarded into the chest and abdomen where the scales stood fiercely.

Instantly, penetrate!

"Boom!!" roared.

The edges of the diamond are extremely sharp, and the very center of the diamond is a concentration of energy. ...,