Jin Buhuan and the saint entered the treasure cave, but the two guards behind suddenly noticed something wrong. Because Kim doesn't change and has no tail, he looks a little strange.

"The virgin takes a human. Why do they want to enter the treasure cave?"

The two guards looked suspicious and then looked at each other. The lizard holding the golden gun on the left pondered for a moment,

"I think it needs to be reported to the elder. If something goes wrong in the treasure house, we can't afford it."

Another guard also nodded, so he quickly sent a person to report to the elder.

Jin Buhuan and the saint didn't know about all this. They didn't know at all. Jin Buhuan had revealed his secret. After they entered the cave, a huge copper gate appeared in front of them.

Buzzing——

With a flick of the saint's finger, the token in her hand was suspended and embedded in the copper door. At this time, lines appeared on the copper door, which quickly fused to form a light, and then the door trembled.

Rumble——

They opened the copper door and entered the dark treasure house.

Poof——

As soon as Jin Bu changed his palm, a heart fire appeared. The heart fire suspended and lit up the surroundings like a lamp. The scene in the cave finally appeared in front of him.

In the cave, there are a large number of spars. These spars seem to be the crystallization of fire, showing a transparent red. If you take one at will without changing gold, you have a burning feeling.

"These are ground fire crystals, because fighting Qi is very thin here, so we should cultivate with the help of ground fire crystals. Ground fire crystals are the product of the condensation of ground fire and fighting Qi and contain a lot of power."

The saint explained that Jin Buhuan immediately crushed one of the ground fire crystals. After the crystal broke, it immediately turned into a piece of red broken light. Jin Buhuan looked for a skill and inhaled the broken light into his body.

"The power contained is indeed very essence. It is indeed a rare treasure for those who practice fire attribute skill."

Jin Buhuan praised that the ground fire crystal is more refined than the fire milk. Of course, the ground fire crystal is the product of condensation for countless years. Whether from the perspective of condensation time or power, it is far from being comparable to the fire milk.

"Come on, I'm not interested in these Huodi crystals..."

To the virgin's surprise, Jin Buhuan did not receive these crystals. For Jin Buhuan, this kind of thing, like fire milk, seems to have some chicken ribs. After having different fire, where does he still need this kind of thing.

Crystal stones are everywhere in front of us, emitting a steaming red mist. The mist contains strong fighting spirit and is stacked here. These crystal stones were dug up by salamanders. Generally speaking, the assets originally reserved are not used.

Shuttling between a large number of crystal stones, Jin Buhuan is a little disappointed, because there are no other treasures here except crystal stones.

It seems that you know Kim doesn't change his mind, saint. You explain now,

"The fire lizard family is hidden 30000 meters under the underground magma. It is isolated from the world. Naturally, there are no human treasures and instruments. Of course, there are some things here, which may not be in the outside world."

Jin Bu changed his head and thought it was natural. After all, this place is 30000 meters underground. It can't be like the outside world. There are many kinds of treasures. Most of the treasures here are minerals.

Buzzing——

After a while, the area in front emitted a burst of black light. Jin Buhuan walked over curiously and found a piece of black spar.

"What is this?"

Jin Buhuan picked up a black spar and asked the saint. The saint also picked up one of the stones, which explained,

"Black diamond crystal."

"Black diamond crystal?"

Jin Bu changed and frowned, because he had never heard of any black diamond crystal.

"This is a unique thing here. Of course you won't know. After being squeezed below the 30000 meter rock layer, it was formed after being burned by the ground fire for many years. It was squeezed out because of the stratum movement, and the most important characteristic of the black diamond crystal is hardness..."

The saint looked at him and said,

"If you don't believe it, you can pinch it to see if you can crush this crystal stone."

Jin Buhuan was skeptical, then held a black diamond crystal and squeezed it hard.

"Huh?!"

After Jin Bu's pinching, the black diamond crystal didn't break. You know, he is a fighting saint. When he pinches his palm, he can easily crush the Zunqi. However, it's surprising that the stone is so hard.

"Let me check..."

On this thought, Jin Buhuan hurriedly used the system for detection and comparison. When the results of the system appeared, he couldn't help being surprised,

"The hardness has reached level 9..."

According to systematic estimation, the hardness of black diamond has reached level 9. If level 10 is full, there are almost few treasures that can reach level 10 hardness, such as glazed lanterns, such as world stone. Jin Buhuan knows only these two things. Of course, there are arrays and runes on glazed lanterns in addition to the glass outside the sky, There are other special materials.

Level nine, what's this concept.

In other words, the nine star duel saints are not so easy to break.

"It's a good treasure..."

Jin Bu changed his eyes, and he seemed to have a good plan in his mind.

Because if he repaired the fire spirit cannon and used it as the cannon core, the power would be even stronger than that produced by the fire lotus.

The black diamond ground fire is burned and has experienced the condensation of countless years. Its attribute is also fire attribute. Naturally, it can be used as the gun core of fire spirit gun to launch an attack.

After that, Jin Buhuan quickly took out the Najie and took away all these stones.

The conditions for the birth of black diamond crystal are extremely bad, so it is not so easy to mine this kind of rock. Therefore, there are not many black diamond crystals stored here, and the gold will be taken away without exchange.

Seeing this scene, the saint couldn't help wondering, no matter how hard the black diamond crystal is, it is only a stone after all. Is it so useful?

Different from other materials, black diamond crystal is not suitable for refining tools, so although it has hardness, it is not so useful.

However, she did not ask in detail, because Kim naturally had his own plans.

After cleaning up the black diamond crystal, the two continued to move forward. Soon, there were stone gates in front. Count carefully. There were more than 100 stone gates. On these stone gates, strange lines were painted. These lines seemed to be ancient Warcraft, very strange.

"Don't touch!"

Jin Buhuan was curious and was about to open the stone gate. Who knew that the saint's face changed dramatically and drank it quickly, but Jin Buhuan had already touched it

Buzzing——