In the cultivation room, Yu Xiao first took out the true soul that she got from Yang Xuan and the others, put it under her nose and inhaled it, and the golden breath penetrated into Yu Xiao's nostrils, and she meditated and refined.

Forty hours later, Yu Xiao opened his eyes.

Those true souls were all turned into spiritual energy and refined into the golden pill, and there was not a trace of residual true souls. Sure enough, refining a person's true soul will not be in danger of turning into a demon beast.

Yu Xiao sighed, took the demon soul in his hand again, and refined it.

......

"Hula!"

Afterglow emerged from the lava river, soared into the sky, and landed on the black rock on the riverbank, throwing a white stone.

Doodoo ran over and picked it up.

"How many are there?"

"Twenty-three. ”

"You can't even count!" Yu Xiao roared.

"Twenty-two just now, now it's not twenty-three!"

Although Dudu did not go down the lava river, he was also sweating on the shore and had an irritable temper.

Yu Xiao didn't even finish refining a single demon soul, so he was called by Su Sanwu to collect fire condensation crystals.

"There is no sea condensation here, I use fire condensation crystal. Su Bai relies on that as fuel, and the more you collect, the better. ”

The fire crystals are at the bottom of the lava river and must be submerged into the boiling molten lava.

Yu Xiao was wrapped in a thick layer of real ice, jumped down to find it, and maintained a maximum of more than a dozen breaths each time he dived. She searched for more than ten days before she found twenty-three.

"If only I were a Flame Stone Worm. Yu Xiao rested on the shore and sighed.

The Flame Stone Worm is a demon beast that lives in the magma river, and they are all third- and fourth-order. They swim freely and feed on lava.

A long, narrow beak caught a flame stone worm and swallowed it in a few clicks.

It was a sixth-order fire-eater.

The cassavalus looks like an ostrich, with black feathers on its body and bright red feathers around its neck.

They are not afraid of the heat, and stand on the black hard shell of the magma river, eating flaming stone worms.

"I'll go down again, or the karst beast will come out in a moment. ”

Yu Xiao wrapped himself in a real ice hockey ball and flew into the air, smelling the pungent smell of sulfur through the ice.

She had to go down from the hottest place, and the molten slurry next to her was slow, like a swamp. If you are trapped inside, you will be suffocated if you don't get burned to death.

As soon as Yu Xiao fell into the magma river, he dived straight to the bottom of the river. Found a piece of fire condensation crystal, leaned over and wrapped it in real ice, and quickly left.

It didn't seem like a lot of work, but it wasn't always before the real ice melted, she could find the Fire Crystal, it was all up to luck.

Yu Xiao pushed the molten slurry below with a spiritual power, as if it was floating up quickly.

"Whew-"

At the source of the magma river at the bottom of the mountain, a group of eighth-order karst beasts swam out, opening their hideous mouths and biting towards Yu Xiao.

In the molten lava, Yu Xiao's ice technique didn't have much effect, and he could only keep dodging.

Karst beasts are long, round strips, with short limbs, and can only swim in the molten lava. As long as you leave the lava river, you will not be afraid of them.

This group of karst beasts seemed to be tired of eating firebirds, and wanted to change their tastes, so they chased after Yu Xiao.

Yu Xiaozhen's ice ball became smaller and smaller, and the fire condensation crystal he had just picked up also fell.

"Get out of here!" Yu Xiao roared, spikes sticking out of the real ice hockey puck.

A karst beast just bites on a real ice hockey puck, and is pierced by spikes and wails, and lava flows from the wound.

"What a monster, blood is magma. Yu Xiao took the opportunity to shoot an icicle to separate the molten slurry. The molten slurry quickly closed, but Yu Xiao had already escaped, lying on the shore gasping for breath.

Karst beasts have hunted fire-eating birds.

"Let's just catch a karst beast, and there will be fire crystals. ”

"Fire crystals are not produced by karst beasts. ”

Su Sanwu landed beside Yu Xiao leisurely, and grabbed the fire condensation crystal that Yu Xiao had fortunately collected with his hand.

"But every time the karst beast comes out to feed, there will be more fire crystals, and it is easy to find. ”

"That's what they brought out of the body of the Executioner's Turtle," Su Sanwu counted the fire condensation crystals in his hand, "The Karst Beast is the parasitic beast of the Executioner Turtle, and it is preyed on by the Executioner Turtle." ”

"Executioner Mountain Turtle?" Yu Xiao said in surprise, "The parasitic beasts are all eighth-order, so what rank is the Executioner Mountain Turtle?"

"The Warrior Mountain Turtle is an old demon king, the true master of this Flame Spirit Realm. The fire condensation crystal is coagulated from its blood. ”

Yu Xiao was happy in his heart. She searched everywhere for the demon king and couldn't find it, it turned out that there was one here.

"Is this demon king powerful? Since they are all old, they should be very dull. ”

Su Sanwu glanced at her, "No matter how dull you are, it's better than you." Su Bai told me that you eat demon souls. Don't bother with the idea of the mountain turtle, she's a friend of Jiu. ”

"Okay, okay. Yu Xiao agreed.

As soon as Su Sanwu left, Yu Xiao was fully armed. Doodoo squinted at her.

"What kind of expression do you have, I'm just going down and seeing. Since the fire condensation crystal was brought out of the stomach of the Executioner Mountain Turtle, then there should be a lot of it in her stomach, so I will go and fish out more. ”

And there are many true souls of these demon kings, taking a little bit has no effect on them at all.

Seeing that the karst beast was about to go back, Yu Xiao hurriedly followed.

The karst beast was now full and just wanted to go back, and when he found Yu Xiao, he didn't pay much attention to her. Yu Xiao smoothly entered the bottom of the mountain.

An irregular circular cave appeared on the mountain wall, and the karst beasts swam into it.

Yu Xiao has also come down here dozens of times, and he didn't see a cave here before, so he hurriedly followed the karst beast and got in.

After passing through the cave and swimming for another while, the rushing lava river calmed down. But the surrounding magma is all fiery red in color and the temperature is very high.

Yu Xiao saw that there seemed to be a bright light above, and he went upstream, and actually floated out of the lava river.

There is a man-high position from the river to the top of the cave. Yu Xiao stopped in the air and followed the karst beasts in the lava river.

This is supposed to be the body of the Hangyama turtle, but I don't know where it is.

If you can't find the true soul, just wait for the karst beast to come out next time, and then go out with it.

Yu Xiao thought like this, and a large pool of water ten zhang square appeared in front of him, and of course it was full of molten slurry.

The karst beast entered the waterhole and did not move. After a few moments, it quickly decomposes and melts into molten slurry.

Some of the residue remained, arching in the molten slurry, and it turned out to be a flame stone worm.

"It turns out that the flame stone worm was also made by the Hangshan turtle. This is really a complete ecological chain. ”

Karst beast is gone. Flame stone worms grow and multiply rapidly in the molten lava, and swim out along the lava river to make food for the flaminowers.

Yu Xiao dived into the waterhole and saw a layer of fire crystals laid underneath.

If she knew there were so many here, she wouldn't have to spend half a day outside.

The temperature in this pool is warmer than outside, but you don't have to look around. It took Yu Xiao a few hours to collect a bag full of them.

At this time, the molten slurry in the pool tumbled. She quickly floated up and out of the pool.