The black armor stone fire dragon lying on the ground was still in a state of vertigo, and even if Ye Li rushed to the back of its head, it was unable to react in time.

Ye Li raised the blazing white claw on his right hand that was as dazzling as the sun, and slammed it towards a fine scale behind the huge head of the Black Armor Stone Fire Dragon.

The scales in this area looked noticeably weaker than the others, and they all shattered the moment they came into contact with Ye Li's right hand.

A dazzling flame on Ye Li's right hand exploded and poured into the brain of the Black Armor Stone Fire Dragon, and the huge explosive force instantly shattered the skin, flesh and bones under the scales of the Black Armor Stone Fire Dragon, and the monstrous flames began to spread towards its brain.

The blazing white flame was incredibly powerful, and under Ye Li's control, it burned into the inside of its skull in the blink of an eye.

The crazy flames roared out the black armor stone fire dragon with a scream, and then began to struggle frantically.

At this time, Ye Li didn't give it any chance, his arm was thrust into the head of the Black Armor Stone Fire Dragon, and he tightly clasped its skull with his fingers to prevent himself from being thrown down.

Then he accelerated the speed of the flames, and frantically ran around the brains of the black armor stone fire dragon.

Two blazing white flames poured out of its eyes, mouth and nose at the screams of the Black Armor Stone Fire Dragon, and then it stopped struggling, and collapsed like a puddle of mud, no longer moving.

Feeling the disappearance of the life breath of the giant beast under him, Ye Li finally stopped releasing flames and took back his power.

After dispersing the state of casting fire, Ye Li finally breathed a sigh of relief, this black armor stone fire dragon was really not an ordinary demon beast, it was extremely powerful both in attack and defense.

"I finally killed it, this demon beast from another world is really not easy to deal with!"

Ye Li gasped twice, feeling a little sour body, and said to Swallow Ri.

Swallowing Sun nodded, and said, "You are not bad, killing the Black Armor Stone Fire Dragon alone was something that only a very few elite disciples of the sect could do in the past."

In addition to melee combat, this thing is really troublesome for ordinary spirit rune masters to deal with.

Because its defensive ability is too strong, and its attack methods are strong and fast, ordinary spirit rune masters, there are few people to cover the defense together, and look for opportunities to attack the back of its head, and they can't kill it at all. ”

Hearing Swallowing Sun's words, Ye Li also nodded.

He also felt the difficulty of the Black Armor Stone Fire Dragon, if it weren't for his outstanding melee ability and extremely fast speed, it would be really difficult to defeat the other party.

"By the way, Senior Sun Swallower, does this demon beast have anything of value besides the demon pill?"

Ye Li didn't know anything about this kind of demon beast, so he could only ask about it.

After thinking about it, Tunri said, "Actually, I don't know much about it, but I've heard a lot of information about it in the past.

It is said that this otherworldly demon beast, in addition to the demon pill, also has a special spar in the brain, called the soul crystal.

This soul crystal is a feature of their world, and there is only one way to use it after we get it, and that is to forge it into a defensive rune.

A defensive rune crafted from soul crystals and other materials can be used to resist soul attacks.

At the beginning of the war with the Otherworld, the masters on our side, after killing the demon beasts of the Otherworld, took out the soul crystals from their brains, and then forged various defensive runes to resist the soul attacks of the otherworldly creatures. ”

Hearing Swallowing Sun's words, Ye Li was slightly stunned and said, "They still have soul crystals in their brains, which can resist soul attacks?"

By the way, Senior Sun Swallower, are otherworldly creatures very good at soul attacks?"

Swallowing Sun nodded and said, "Yes, many of the creatures in the other world have the ability to attack souls, so they are very difficult.

After all, the soul power in our world is completely from the other world, and it can be regarded as an external force.

If creatures from the other world can unleash soul attacks, then there is no soul crystal in their minds, and they can rely on their soul power to defend against soul attacks.

Those in the otherworldly creatures who can't release the soul attack must have the existence of soul crystals in their brains, which can make them resist the attack of the soul attack.

This is probably determined by their survival conditions in the other world, after all, there will also be battles in their world, if they can't resist the attack of the soul power, those demon beasts in the other world creatures that can't attack the soul will be completely wiped out. ”

Hearing Swallowing Sun's words, Ye Li thought about it, and finally nodded in agreement.

As he spoke, Ye Li had already begun to look for the Demon Pill and Soul Crystal in the body of the Black Armor Stone Fire Dragon.

After all, it was the first time he had come into contact with this kind of demon beast, and Ye Li took his long knife rune soldier, and after a lot of exploration, he finally found the demon pill and the soul crystal.

The demon pill in the late stage of the séance period, he just happened to be able to use it for cultivation, and there was nothing special about it.

As for the soul crystal, Ye Xuan was full of curiosity.

Ye Li held a fist-sized gray crystal in his hand, held it in his hand and observed it carefully, among the gray crystals, a thick gray mist was constantly flowing, and it seemed a little familiar.

After observing for a while, Ye Li's heart suddenly moved, reached into his arms, and took out a gray token.

This token has a strange dark green spar on it, and the spar also contains a rich gray mist, which is constantly flowing.

Except for the color of the two hedrons, the gray mist inside is exactly the same.

It's just that the dark green spar on the gray token in his hand looks a little thicker than the gray mist inside, and it seems that the level is slightly higher.

"Senior Sun Swallower, why do these two crystals look so similar, could it be that the crystals on this token are also soul crystals?"

After Ye Li compared the two spars, he was full of doubts in his heart.

After hearing Ye Li's inquiry, Swallow Sun also observed the two spars.

After looking at it for a while, it spoke: "I also feel that the crystal on the token in your hand is a bit like a soul crystal, but I just don't know if there is such a dark green soul crystal."

After all, my understanding of otherworldly creatures is mostly through the bloodline inheritance of our demon beasts and some information I heard, so I don't know in detail. ”

Hearing that Swallow Sun was not sure, Ye Li could only nod helplessly.

Putting the token in his arms, Ye Li didn't bother with this problem anymore, even if the token was really a soul crystal, it could only mean that the maker of this token might have been here.

But he doesn't know when this token was made, and the girl who gave him the token at the beginning also said that this is her master's ancestral thing, and it is likely that it really comes from a very ancient era.