The high-level ghost and a dozen intermediate-level ghosts returned to the grotto and gathered in front of a protruding stone wall on the right rear.

They didn't feel anything about the hundreds of undead that suddenly appeared.

With a thought, Qi Bei was surrounded by hundreds of undead and approached the dozen or so ghosts.

Just as Qi Bei was about to start, his mind was shocked.

He suddenly felt a mysterious energy pouring in from some of the ghosts under his control. This trace of energy seemed to be a kind of tonic for the undead, which could damage the undead. The undead have accelerated recovery.

And this trace of mysterious energy seems to come from behind the protruding stone wall, no wonder these ghosts are all gathered in this piece.

Qi Bei observed for a while, and found that there was no other abnormality, the black long sword suddenly stabbed out, and under the cover of the thick dead aura, the high-level ghost didn't have time to react, and was stabbed. The flickering Shenlong Jue internal force made its figure instantly faint.

This high-level ghost let out a piercing scream, it wanted to attack, but it could only feel the same kind surrounding it.

Qi Bei's black long sword pierced out of the undead pile like a poisonous snake, and the attack again and again made the figure of this high-level ghost pale as smoke.

Finally, when Qi Bei stabbed his sword again, the high-level ghost was unwilling to dissipate into a puff of smoke, and a silver-with-gold high-level undead bead fell to the ground.

As soon as the high-level ghost dies, Qi Bei will no longer have any scruples, and directly order the undead under his control to attack the more than ten intermediate-level ghosts.

In a short while, these ten or so intermediate ghosts will be wiped out.

Qi Bei stared at the undead beads in his eyes, as if he saw one after another undead soldiers who were not afraid of death. With a thought, he would tear up any enemy he wanted to destroy. .

Qi Bei swept these undead beads into the space ring, holding a transparent bead formed after the death of the undead knight.

"Holy Spirit Orb." A message came from the black long sword.

Holy Spirit Beads, Undead Beads, Nether Beads…

Qi Bei is a little confused, they are all undead, why are the beads that condense after dissipating into three categories?

In fact, the essence of the Holy Spirit Bead, Undead Bead, and Nether Bead is the same.

The undead that the rest of the people turned into are actually called undead, but they have been called undead for millions of years. Most of the undead are called undead.

Netherworld Orbs can only be created from the corpses of generals who have reached a certain level of Netherworld.

Qi Bei held a black long sword, and with a thought, a rune shot out from the tip of the sword, covering the Holy Spirit Orb.

Suddenly, a undead knight appeared in front of Qi Bei. It was invisible, but Qi Bei could see it clearly.

"Haha, this undead knight is equivalent to a king-level powerhouse, and he is a knight, so he earned it." Qi Bei looked extremely excited, five Holy Spirit beads appeared among the ten undead knights, and the group Among the ghosts, there were also three high-level undead beads and twenty-eight intermediate-level undead beads, which was a huge harvest.

Although Qi Bei didn't dare to use the Undead Orb easily in the outside world, it's not bad to use it as his hole card, it can have unexpected effects, and even save his life in a critical moment.

At this time, Qi Bei's eyes turned to the protruding stone wall in the grotto, and the energy from it seemed to have the effect of restoring damaged undead.

If he can get that energy source...

Qi Bei's eyes became scorching hot, the use of the undead beads was limited, and the summoned undead would consume its energy when attacked, defended or damaged.

However, if he can be replenished with the energy of the Undead Orb, then he can truly have an undead army.

Qi Bei knocked on the protruding stone wall, not hollow, but solid.

However, Qi Bei couldn't control it so much, the black long sword in his hand burst into a golden light, and he directly slashed at the stone wall.

Sparks splashed everywhere, the stone wall was very hard, and only a little debris flew out when the sword went down.

Qi Bei frowned, his dantian rolled over, and his hands quickly began to turn into dragons.

"Drink!" Qi Bei shouted, and a pair of dragon claws slashed towards the stone wall.

Suddenly, the gravel splashed, and the protruding stone wall was dug to almost level with both sides.

"Nothing?" Qi Bei was stunned for a moment, there was nothing in the protruding stone wall, and the mysterious energy could no longer be sensed.

Qi Bei stood on the spot and pondered for a while, then raised his head suddenly, the dragon claws pointed towards a thorn.

"Crash"

The gravel fell down, but a hollow cave was exposed on it.

Qi Bei was overjoyed.

However, in this very mysterious ancient battlefield, Qi Bei did not dare to be careless, he first controlled a few low-level ghosts to enter it.

Amazingly, from these low-level ghosts, I sensed that mysterious energy again, more than ten times stronger than before.

Not aware of the danger, Qi Bei turned into a phantom and entered the cave above.

The cave is not big, in a corner, there is a faint glow, and the few low-level ghosts are surrounded by it.

Qi Bei stepped forward, stretched out his hand, and the glittering object fell into his hands.

This is a stone in the shape of a heart, which contains an extremely strong death energy.

"The heart of death, the force of death is condensed." This message came from the black long sword, and then began to frantically absorb the energy above.

Qi Bei was stunned for a moment, and suddenly thought that when enchanting to deal with the ghost who stepped into the realm of the ghost king, she once took out a blue-green stone with a similar appearance, which she called the sky Heart.

After a short while, the energy in the heart of death was sucked up by the black long sword, it hummed and trembled and pointed to the side.

Qi Bei took a palm, the whole cave shook, and the side pointed by the black long sword collapsed.

Suddenly, Qi Bei's eyes widened, and his mouth opened uncontrollably.

On that side of the collapsed wall, the hearts of death were embedded in it, exuding pieces of dim light.

At this moment, Qi Bei's left hand and heart were all scorching hot, but the target of induction was in the corner next to the heart of death.

Qi Bei used his internal force to shake off the soil layer, a layer of lustrous and moist, but vibrant green light came into his eyes, and green heart-shaped stones appeared one after another.

"This...is it the heart of life?" Qi Bei looked at the exposed heart-shaped stone with a green glow. The opposite of the death aura contained in the heart of death was , This stone contains endless vitality.

The heart of death, the heart of life, why appear in the same place? And there are so many at once?