Cheng Yunfan was stunned for a moment, not understanding why these two fire cloud rats hit the cave wall.

The claws of the fire cloud rat are more than a foot and a half long, sharp and hard. Cheng Yunfan saw that the hard rock cave wall was shattered like tofu under the sharp claws of the two fire cloud rats.

The front paws of the two fire cloud rats waved like windmills, and in Cheng Yunfan's opinion, it was impossible to distinguish their movements at all.

Almost at the touch of a button, a large hole was dug into the wall of the cave. Then I saw the rubble flying, and the two huge fire cloud rats dug the hole very quickly, and quickly disappeared into the rock formation.

Cheng Yunfan's divine sense hurriedly followed, and at this time, he suddenly caught a trace of divine consciousness fluctuations in the rock formation in front of the fire cloud rat!

There's something behind the rock formations!

It's a large underground space, and it looks like the firecloud rats have dug it up. There were a lot of firecloud rats running around in it, and it looked like there were at least a few dozen of them. And when Cheng Yunfan's divine consciousness extended to the depths of the cave, Cheng Yunfan was stunned!

In the middle of this underground cavern, a huge bluestone stands abruptly there. The appearance of this bluestone is irregular, but the overall appearance is basically round. A huge black shadow lay on the edge of the bluestone, faintly revealing a powerful aura.

Cheng Yunfan looked at it from a distance in surprise, this black shadow and this bluestone didn't look simple!

The surface of this bluestone is covered with the teeth and claw marks of the fire cloud rat, but it can be seen that all the efforts of these fire cloud rats' sharp teeth and claws on this bluestone are in vain. Judging by the thick stone chips on the ground and the bluestone on the walls of the entire cave surrounding the cave, they took great pains to dig this bluestone out of the stone layer completely, so much so that such a large cave was dug out of the ground. However, when this bluestone reaches the core, it is already many times harder than steel. These fire cloud rats were helpless after all their efforts, so there was such a big rock left in the middle of winter.

Cheng Yunfan can now be sure that there must be something strange about this big bluestone, maybe there is something good hidden in the stone.

However, what he is most concerned about at the moment is the dark shadow.

At this moment, two red lights suddenly flashed in the cave.

Cheng Yunfan was taken aback. Originally, the eyes of these fire cloud rats were emitting red light, but now these two red lights were extremely obvious, like two red pillars of light.

Cheng Yunfan saw that it was a big black shadow who opened his eyes.

This is actually a huge Fire Cloud Rat! It was lying there, and its body was already nearly two feet tall! Cheng Yunfan secretly explored, it is estimated that this guy has reached the third order, and he can be called the Fire Cloud Rat King, even if it is an authentic Spirit Seeking Mouse, he has also cultivated to the peak, and he has no further progress.

In this kind of barren place, why a non-authentic spirit seeking mouse like him can cultivate to such a point must have something to do with it, and it may be related to the big bluestone.

However, the third-order demon beast must be extremely difficult to deal with.

Cheng Yunfan stared at it, and saw that its mouth opened slightly, and a light red light shot out, and actually drew a cyan ball of light from the big bluestone, and began to inhale it into his mouth, with a very satisfied look.

He also left the remnants of the cyan ball of light for the two fire cloud rats, and the two rats feasted on them as if it were a supreme delicacy.

Cheng Yunfan left the black fox behind, let it lurk, and carefully observed the number of fire cloud rats and the rules of their activities. The main thing is to observe the mystery of the rat king and the bluestone.

Knowing himself and his opponent to win all battles, Cheng Yunfan now needs to know enough about this group of fire cloud rats.

If there is no mysterious bluestone, Cheng Yunfan can directly go down with the Zhang family to explore. However, it is now clear that there is a mystery to that piece of bluestone. Cheng Yunfan even suspected that it was very likely that this group of huge Fire Cloud Rats had become so huge because of what benefits they had gained from this bluestone!

If that's the case, the things in this bluestone are too important.

Since Cheng Yunfan has decided to obtain the bluestone, it means that he will face this group of fire cloud rats alone. Obviously, this is a big challenge.

The next day, Cheng Yunfan first went down to the mine with the disciples of the Zhang family, but there was nothing to gain, so he asked everyone to observe for two more days. That night, Cheng Yunfan found all the passages leading to the mine through the Fire Cloud Rat, and then laid several phantom arrays at the entrance of each passage. These formations were at least able to block those low-level Fire Cloud Rats.

The Fire Cloud Rat did not launch a large-scale attack on the miners, which means that the miners who disappeared in the past may have only happened to encounter the Fire Cloud Rat that was predatoring, or even attacked it. From the current point of view, the main food of this group of fire cloud rats is still mineral-based, and occasionally hunting other demon beasts is also to obtain more powerful power.

Miners are nothing more than ordinary people who have no spiritual power on their bodies, and they have no attraction to them.

After seriously thinking about the countermeasures for two days, Cheng Yunfan felt that he was seventy or eighty percent sure, and he was ready to act, and his reliance was only three rune treasures, as well as the Jiuyang Lost Trace Array.

Let the disciples of the Zhang family handle the main cave entrance and kill the ordinary Fire Cloud Rat, and he himself will attack and kill the Fire Cloud Rat King inside, and at the same time obtain the big bluestone.

That night, after Cheng Yunfan summoned the disciples of the Zhang family, he said bluntly: "After thinking about it for the past few days, I feel that it is necessary for us to investigate again, and I have also used my divine sense to investigate in the past few nights, and I found that there are indeed demon rats, and they are not extreme, but a large group." This mission is completed, and the sect will inevitably have a heavy reward. When I go back to report, I will not forget the merits of the Zhang family and all my junior disciples. ”

Everyone nodded in unison.

Seeing this situation, Cheng Yunfan threw out a small jade bottle and said lightly: "This is a high-grade spirit elixir, which can not only replenish the loss of spiritual power during battle, but also enhance cultivation." You're divided, and it should be enough for the next battle. ”

Although everyone has insight, according to the background of the Zhang family, high-grade pills are indeed rare, and they are naturally overjoyed. Zhang Tao, who had the highest cultivation, asked respectfully, "Senior brother, I don't know what we need to do?"

Cheng Yunfan stretched out his hand and swiped around, and said: "There are four passages leading to the outside of the demon beast gathering place, one large and three small, and when the battle begins, you wait to hold three small holes, but the demon beast escapes, just fight, you can't let it escape, I will defend the avenue, I have laid a magic circle there, you don't have to worry." ”

"Can you ask, what kind of demon beast it is?" asked Li Gang.

"It's a mutated fire cloud rat"

Even if the Fire Cloud Rat is mutated, how strong can it be? This is the idea of the disciples of the Zhang family.

"The beast's lair is deep underground, and I'll rush in and kill their leader. Cheng Yunfan's eyes suddenly became serious, "However, there will inevitably be fire cloud rats that will scatter and flee." I hope you will intercept all the escaped fire cloud rats, and no fish will slip through the net. ”

"Please rest assured, senior brother!" Carrying the pill given by Cheng Yunfan in his arms, the shock in the hearts of the disciples of the Zhang family was incomparable. These pills are the first time they have seen them since they practiced, and with these treasures at the bottom, they can't block a passage?

"Senior Brother Cheng, wouldn't it be dangerous for you to break into that demon beast's lair alone?"

"No need. Cheng Yunfan waved his hand, "I've been preparing for so long, and I already have a perfect plan." As long as you seal those holes, you will be able to do a great job. ”

"Yes. Seeing that Cheng Yunfan was very confident, Zhang Tao didn't say anything more.

"Get ready, get started. Cheng Yunfan glanced at it lightly and commanded.

"Yes!"

The reason why I chose to do it at night is because the yin qi at night is self-generated, suppressing the fire cloud rat with fire attributes, which is also conducive to the action of the black fox. The black fox connected to Cheng Yunfan's divine consciousness had already dived underground. Previously, it had already set up the Jiuyang Trace Array handed over by Cheng Yunfan in place. In order to ensure the safety of the array disk, these nine array flags were all placed inside the rock formation by the black fox, and the fire cloud rat could not detect it at all. Now just wait for it to embed the spirit stone in the array disk, and then Cheng Yunfan can be activated.

The Fire Cloud Rat's spiritual sense is very keen, and it is embedded in the spirit stone in advance, even if it is separated by a thick rock layer, it is possible to be detected by them.

The black fox is monitoring the situation in the nest. Some firecloud rats roam outside, and there are about a dozen of them. And there are at least thirty or so fire cloud rats in the nest at present.

Cheng Yunfan was not very interested in destroying this group of demon beasts. The reason why Zhang Tao and the six of them blocked the entrance of the cave was actually to find some work for them to do, so as not to alarm them when they fought the fire cloud rats, and these people came down to break their own big things.

A group of people, each holding their breath, in front of them was the entrance to the fire cloud rat's lair, Cheng Yunfan slowly took out a stack of talismans and gave an order to the black fox.

The black fox communicated with his divine sense many times, saying that the big bluestone exuded a strong breath of life.

What is the breath of life, Cheng Yunfan can't figure it out. But he can conclude that the absolute value of the things in this bluestone is immeasurable! With Cheng Yunfan's order, the black fox moved quickly in the rock formation, embedding the medium-grade spirit stones into the array, this time to succeed in one fell swoop, naturally he can't spare the medium-grade spirit stones.

The Rat King sensed the movement of the black fox for the first time, and also sensed the abnormal spiritual power in the rock formation. Its massive body slowly stood up, a pair of scarlet eyes tracking the black fox in the rocks, and bursts of high-pitched hiss came out of its mouth.

As if at the leader's call, the Fire Cloud Rat began to gallop towards the lair.

With no one around him, Cheng Yunfan naturally used the Zixiao Sword to fight the enemy

"Alright!" the black fox sent a message urgently.

Cheng Yunfan's divine sense moved, and he immediately activated the array disk in the rock formation!

The Rat King launched four or five spell blasts in a row against the rock formation, but none of them hit the black fox, and was jumping to command the younger brothers to chase her. But the position of the black fox in the rock formation is constantly changing, and for a moment the fire cloud rats are helpless.

At this time, the surrounding spiritual power suddenly fluctuated, and the ground actually trembled slightly. The Rat King suddenly had a bad sense of crisis in his heart, and he roared angrily to look for the black fox again, but found that he could not find her breath.