After knowing the origin of this black stone, the corners of Su Sheng's mouth also hooked up a curvature.

This trip was not in vain.

It's just that in the face of the current situation, he is also a little difficult to start for a while.

It is impossible for this thing to appear on its own, it must be connected to the molten mountain obsidian vein below, and it is really not easy to get this thing away.

Once he gets rid of this thing, there will be no place for him.

Just as Su Sheng was pondering how to take this thing away, Mu Ling's dark laughter also came.

"Hehe, boy, don't rush the idea of this molten mountain obsidian yet, you take a good look, what's in the center of this molten mountain obsidian?"

As soon as he heard Mu Ling's words, Su Sheng immediately cast his eyes on the center of this molten mountain obsidian.

"It's ...... Obsidian Fountain of Fire!"

In the center of the molten obsidian, a black liquid was bubbling as if it were about to boil.

Just now, because he was too focused on the molten obsidian under his feet, Su Sheng didn't notice this for a while.

"Hehe, you kid is lucky, you have met something good. Mu Ling also smiled and licked his mouth at this time

"Haha, it's a good thing indeed. ”

Although it was unbearably hot, Su Sheng's face also showed a thick smile at this time.

This molten mountain obsidian itself is a very good refining material, but when it comes to value, it is completely inferior to the obsidian fire heart fountain that flows in the middle.

This Obsidian Fire Heart Spring is something that can only occur after being smelted by earth fire for thousands of years, and moreover, this Obsidian Fire Heart Spring is made by absorbing the essence of the obsidian of the molten mountain below.

Although it looks like black spring water, it is actually a metal with a high degree of hardness, and with a little refining, it can be turned into a powerful weapon that can take people's lives.

Moreover, because this thing flows like spring water, it is much easier to smelt, and it can be said to be one of the refining materials that every refiner wants to get.

Now, Su Sheng can basically conclude that there must be a vein of molten obsidian underneath.

Otherwise, this fountain of fire would not have been formed.

However, at this time, Su Sheng no longer cared about the ore veins below, and with this obsidian fire heart spring, these ordinary molten mountain obsidian were no longer important to him.

"Boy, be careful when you collect it, there must be a fire under this black spring. ”

When Su Sheng was eager to try and was about to collect this obsidian fire heart spring, Mu Ling didn't forget to remind him.

"Well, I know. ”

The current Su Sheng is no longer the original rookie, and when he saw this obsidian fire heart spring, he knew that under this flowing black spring, there must be a fire mouth.

As soon as he collected these black springs, the earth fire would immediately erupt, turning the only place of landing into a sea of fire.

Therefore, before collecting these black springs, he had to prepare for evacuation.

"Roar...... Roar...... Roar ......"

Just as Su Sheng was thinking about how to collect these black springs, he suddenly heard an earth-shattering beast roar from the side.

This sudden beast roar also made Su Sheng, who was in the middle of the lake, feel a palpitation.

At the same time, the little silver snake in Su Sheng's arms was also frightened and scurried around, obviously frightened.

Judging from his own experience in fighting with demonic beasts, Su Sheng could immediately conclude that the strength of this demonic beast definitely surpassed the third order and reached the fourth order.

"Satsuki, are you alright?"

Su Sheng didn't care about receiving any obsidian fire heart spring, and suddenly turned his head to look in the direction of Nanjiang Yue.

If a fourth-order demonic beast broke in through the hole they had entered before, then Nan Jiangyue, who stayed behind, would be more than lucky.

"Senior brother, are you alright?"

And Nan Jiangyue, who was by the magma lake, also heard the roar of the beast, and also shouted towards Su Sheng with concern.

"Boy, the person who encountered this fourth-order demonic beast is not your junior sister. At this time, Mu Ling suddenly spoke

Hearing Mu Ling's words, Su Sheng suddenly exclaimed, "You mean, it was the Fifth Senior Brother who met this fourth-order demonic beast?"

"That's right, it's him. Mu Ling affirmed

Hearing Mu Ling's confirmation, Su Sheng's heart suddenly tightened.

Although the fifth senior brother was already a sixth-level Danling cultivator, it was still much worse than the fourth-order demonic beasts.

Su Sheng didn't dare to imagine the consequences encountered, especially in this narrow volcanic lava cave, which became more and more unfavorable to the fifth senior brother.

"How can there be a fourth-order demonic beast here?"

At this time, Su Sheng, although he was not in danger, was also worried and anxious in his heart.

However, no matter how anxious he was, he could not do anything.

He had split into two ways with the Fifth Senior Brother to investigate, and at this time, he didn't know which lava cave the Fifth Senior Brother had entered.

Now, he could only hope in his heart that the fifth senior brother would be able to avoid this fourth-order demonic beast as soon as possible.

"Senior brother, let's get out of here, I'm a little scared. ”

Nanjiangyue, who was located on the edge of the magma lake, also looked a little nervous at this time.

The roar of this fourth-order demonic beast was also suppressed by the momentum of the spiritual cultivation of the machine spirit stage, and it was reasonable for Nan Jiangyue to be afraid.

"Roar...... Roar...... Roar ......"

At this moment, the strong beast roar became more and more urgent.

Judging from Su Sheng's experience, this was obviously the roar of the Demon Beast during the battle.

In other words, the fifth senior brother did not retreat, but confronted this demonic beast.

Judging from the prudence of the fifth senior brother, if he can retreat, he will definitely retreat, and it seems that there is no way to retreat, so he can only fight.

Thinking of this, Su Sheng's heart suddenly hung in his throat, in such a narrow molten cave, against a fourth-order demonic beast, even if it was a fifth-level senior brother of the sixth level of Danling, it was definitely more than lucky.

"Mu Ling, I'll go out now, you can help me determine the location of the fifth senior brother immediately, and I'm going to help him. ”

Su Sheng, who was eager to save people's hearts, directly asked for Mu Ling.

"Boy, if you really want to save your fifth senior brother, don't go out, it's definitely too late to go out. Mu Ling said at this time

"Little Ancestor, what do you mean by this? If I don't go out, how can I find the Fifth Senior Brother?"

Su Sheng, who was anxious in his heart, was very puzzled by Mu Ling's words.

"Hehe, you kid is really crazy. ”

Compared to Su Sheng, who was as anxious as an ant on a hot pot, Mu Ling's voice was very leisurely.

"Take a good look around, this is supposed to be the center of this mountain range, and it's not just an entrance when you come in. Mu Ling nodded

Hearing this, Su Shengton was stunned.

No wonder he, who was in the middle of the lake, was able to hear the beast's roar so clearly.

Thinking of this, Su Sheng did not rush back to Nanjiangyue, but listened carefully.

"Roaring ......"

"I know where Senior Brother Fifth is. ”

Following the direction from which the beast's roar came from, Su Sheng also found another cave by the magma lake.