Chen Ziling's death energy is much stronger than that of the outside world. It took only one week before Qin Yu finished practicing the Shadow Warrior.

On this day, the terrifying dark mist once again covered the mysterious castle.

In the palace, Qin Yu and Brooke set up many magic traps.

Afterwards, under the leadership of Qin Yu, thirteen corpse slaves walked towards the underground abyss of the castle.

There will lead to a huge secret space.

In the secret room, thirteen corpse slaves formed a very exquisite formation, while Qin Yu stood among the corpse slaves.

He was slowly practicing the corpse-practice technique of the general minister. At this moment, all the corpse slaves were integrated with Qin Yu's thoughts, and their mental powers had gathered together.

The Blood Mingtian Corpse Formation accelerated, and the dead energy surrounding the outside world gradually attacked the secret room under the mysterious castle.

Thirteen corpse slaves are like thirteen soul pillars, completely absorbing the dead energy and gathering on Qin Yu in the formation at the same time.

Qin Yu practiced the magic array under the injection of a large amount of dead energy, and reconciled the most yin energy in a cycle to achieve the most refined result.

With his hands open, Qin Yu looked over his head and chanted ancient spells.

The entire mountain became a gathering place of death.

The dead energy outside the sky, the dead energy in the mountains and woods, and even the dead energy hidden underground all gathered into Qin Yu's formation.

However, the Blood Mingtian Corpse Formation seems to be an abyss that will never be filled. No matter how much death energy comes, it can completely swallow it.

In the formation, the dead energy continued to gather, and finally formed a strong yin energy.

The ultimate yin energy is also constantly condensed, forming a protective layer that covers the entire body of the black magician.

Relying on this formation, Qin Yu's efficiency in creating the ultimate yin energy is particularly high.

Now he has devoted all his energy to cultivation and condensed a lot of the essence of the ultimate yin energy.

The changes in the vulva energy of the mountain quickly attracted the attention of many undead creatures, but they were afraid that this was the land of the dark mage, and no undead creature dared to approach.

As the time of cultivation increases, the ultimate yin energy in the secret space becomes more and more condensed.

Even, it has reached the carrying boundary of some corpse slaves in the formation.

Qin Yu looked at the corpses that could not hold on and shook his head helplessly.

After all, all the corpse slaves under his command cannot be as powerful as magma trolls.

If they were all as powerful as trolls, the yin energy they gathered would be more than dozens of times that of now.

"But now there are already a lot of these yin energy I have received."

The black magician narrowed his eyes slightly, his mental power swelled, and the corpse slaves present instantly knew what he was thinking.

The formation suddenly changed, no longer concentrated to the Yin Qi, but began to refine the breath.

A ball of the most yin energy that has been condensed into liquid state continues to shrink under the changes in the formation.

Continuously shrinking and condensing, the breath of death it emits becomes heavier and heavier.

Of course, the shrinking rate is becoming increasingly slower and more difficult.

After more than three hours of refining, the volume of the ultimate yin energy has been refined into the size of a pearl, crystal clear.

But this pearl-shaped small power crystal exudes the most powerful aura of death and the most terrifying aura in the world.

Now it has long been separated from the form of Qi, and it can be described by the power of the Supreme Yin.

"But it's still a little bit short!"

Qin Yu stared at the solid power of the general and minister and said to himself.
Chapter completed!