No light, no water, this is the situation thousands of feet underground.

Zhou Yang followed Ma Shaoyang to fly down from an underground cave hidden under the sand sea, and soon came to such a place.

The size of the underground cave Zhouyang is not clear, but the environment inside is really bad.

In such an environment, those monsters who are used to the harsh environment of the boundless sand sea cannot survive in such a place for a long time without third-order strength.

After all, unlike human friars, monsters can carry Bigu Dan and a lot of water, and even use magic to gather water vapor to form water to drink.

Zhou Yang, for example, carries dozens of bottles of Bigu pills all year round, and a water storage tool with a large amount of clean water.

These Pigu pills and clear water, together with the hundreds of thousands of spirit stones he carried, are enough for him to persist in extreme environments for more than ten years without starving or dying of thirst, or delaying his daily practice.

Of course, although monsters can't carry supplies like monks, some special kinds of monsters can survive without water, food and meat.

For example, the fourth order monster "gold eater" killed by Zhou Yang with the ancestors of the Chen family only eats Lingjin and lingkuang, and the "Earth Dragon earthworm" he once met can also survive by eating only soil.

And this time he will face the fourth order monster "Huolin beast", which is also a special monster living in magmatic fire and eating flame aura.

These special monsters often live in extremely harsh environments. In that place, they have great home advantage, and monsters or monks who can't survive in that harsh environment like them will be greatly affected when they fight with them at home.

"I'll restrain my breath first so as not to disturb the monster inside. Just lead the way in front!"

In the dark underground cave, Zhou Yang accurately aimed his eyes at Ma Shaoyang not far away, and gave orders in a deep voice.

With that, he immediately pinched the Dharma, and the smell of the purple monk fell back to about the fifth floor of the foundation.

Zhou Yang has not fully learned the "golden cicada hiding rest technique" on the third floor, otherwise his cultivation will not only be reduced to this level, but can be directly reduced to the first floor of foundation building.

But even so, Ma Shaoyang was surprised to see his breath suddenly drop so much, and he couldn't find anything different after sweeping his divine knowledge.

As a casual practitioner, he has experienced many battles and life and death crises in his life. How can he not understand the value of this secret technique of hiding breath.

If he has this kind of secret skill, whether it is to eat black and pretend to be low-level friars to attract those sand bandits to rob and kill, or to restrain his breath and reduce the vigilance of some third-level top-grade monsters to attack demon hunting, there is great potential!

"Is this the inside story of Zifu family?"

He murmured in his heart, and the color of horror on his face gradually converged, and the old man really took the road ahead.

While Zhou Yang followed him through the underground caves, his huge divine consciousness had been released and detected the situation of the underground caves.

Under the detection of Zhou Yang's divine sense, all the passages in the underground cave are winding without any rules, and each passage is very similar in size and shape.

It's like, it's like some kind of giant beast drilling out of the ground with its own body as a drill bit.

"It is said that the fifth order monster [sand bug] likes to drill holes in the depths of the earth to find food. Each channel of the underground cave here is in an irregular circle. This whole underground cave is drilled by a [sand bug] monster in order to find food when it lived here a long time ago!"

Zhou Yang's divine knowledge swept through the channels, and his mind turned. Thinking of some data records he had seen, he couldn't help associating the cause of the formation of underground caves with some famous fifth order monster [sand worm] in the boundless sand sea.

Every immortal in the boundless sand sea cultivation world has heard of the legend of "sand worm", but it is not common to see such a fifth order monster and come back alive.

Moreover, even if someone claims to have seen [sand worms], others may not believe it.

You know, it's a famous fifth order monster!

Who would believe that a friar in Qi training period or foundation building period can come back alive after seeing [sand worm]?

Zhou Yang also grew up listening to the legend of [sand worm]. He actually has a curiosity about this huge monster with a body length of thousands of feet. He wants to see if this monster is really as big and ferocious as the legend.

However, although he has this curiosity, he will not really run to the "dead sand sea" where this monster is active to see the true face of [sand bug].

Now, if the underground cave is really related to [sand insects] as he guessed, he can calculate the actual body shape of [sand insects] according to the length and size of each channel.

So in the next trip, he followed Ma Shaoyang through the underground cave, while his divine consciousness carefully swept the whole passage, and calculated the actual size of the [sand worm] by comparing the dents and marks on the cave wall in the passage.

By comparison, Zhou Yang found that the rumors may not be exaggerated.

According to his comparison of the marks in the passage, if the passage is really formed by [sand insect] drilling underground, the body length of this [sand insect] is really more than 800 feet long.

What a huge body with a length of more than 800 Zhang!

Zhou Yang's eyes flashed and his heart was full of shock.

In this way, after they walked in the underground cave for several hours, Zhou Yang felt the surrounding temperature rise abruptly.

As they moved forward, the temperature became higher and higher. Finally, without Ma Shaoyang's reminder, he had found the underground fire pit in his mouth through divine consciousness.

It is a flowing magma river. The magma in the river doesn't know where it comes from and where it flows. Only a section of river about more than 1000 feet long borders the underground caves.

It seems that the [sand worm] monster that broke out the underground cave was afraid of the existence of the magmatic river. After the channel hit the magmatic River, it turned and left as soon as it touched, so that only a corridor more than 1000 meters long was formed on the magmatic river.

Zhou Yang doesn't know why the corridor can't be melted into magma by the high temperature of the magma river. Maybe it's because of the strength exerted by the [sand insect] monster at the beginning, or because the stones constituting the corridor are more resistant to high temperature. These are not important.

Importantly, he has seen the heaven and earth spiritual fire suspected of "killing green lotus fire".

On the slowly flowing dark red magma River, on a black red stone facing the corner on the other side of the corridor, a blue purple flame the size of a washbasin was burning.

When the blue and purple flame burns, the flame seedlings are pulled up layer by layer, just like a half opened blue and purple lotus, with blue inside and purple outside, which is very dazzling.

Zhou Yang looked at the blue and purple flame swaying in the fire. The golden light flashed in his eyes. The black and white pupils suddenly turned golden red, but he had opened the magic power of "leaving the fire golden pupil".

At this time, when he looked at the blue and purple flame, he saw that the power of fire spirit contained in the small blue and purple flame was much more pure and rich than a fourth-order fire demon pill in his hand, and a large number of fire pulse spirit in the magma River converged to the blue and purple flame and was refined by it all the time.

It is precisely because of the endless fire pulse aura in the magma river that the blue and purple flame can burn vigorously all the time, and can become stronger and stronger under the nourishment of fire pulse aura.

Zhou Yang knew that if the blue and purple flame had not been discovered by himself or other monsters, it would be possible for the blue and purple flame to be spiritually transformed into a special existence "spirit fire demon" as long as there was a little chance in the past.

The so-called "spirit fire demon", as the name suggests, is a monster transformed by the spirit fire of heaven and earth.

As soon as this monster is born, it is almost invincible in places such as magmatic River, and has a special divine power "immortal body" envied by all monsters and humans.

However, this kind of "spirit fire demon" is extremely rare, even more rare than the seven level demon fairy equivalent to the real fairy during the robbery period. The "spirit fire demon" found by the fairy practitioners in the fairy cultivation world so far is less than one palm.

So Zhou Yang just thought about the information he had seen in this regard, and he no longer paid attention to it and swept his eyes elsewhere.

His eyes swept around the blue and purple flame, and soon he found it under the magma several feet away on his right.

In Zhou Yang's eyes, the power of fire spirit under the magma was very strong, which was no weaker than the blue purple flame. At the same time, when the fire pulse spirit attracted by the blue purple flame flowed through the area, it would probably sink under the magma and disappear, as if it had been absorbed by something.

Seeing this scene, he immediately knew that the fourth order monster "Huolin beast" in Ma Shaoyang's mouth must be sleeping under it.

So the golden red color in his eyes converged, his eyes turned back to black and white, looked at Ma Shaoyang standing behind him and said, "your news is right. It is indeed the heaven and earth spiritual fire [jingmie Qinglian fire]. Now you can take this foundation pill and leave, so as not to be affected when I fight with [Huolin * * *]."

Then he stretched out his hand and patted the storage bag around his waist, took out a jade bottle containing zhujidan and threw it to Ma Shaoyang.

He bought this foundation building pill from Zhang Yunpeng and kept it in his hands waiting for a friar of the Zhou family to exchange it. Unexpectedly, Ma Shaoyang, an outsider, is cheaper now.

Ma Shaoyang took the jade bottle, raised his hand and pulled out the cork. A strong smell of medicine came out.

He just looked at it a little. After confirming that it was the real product, he quickly closed the cork and put away the jade bottle. Then he bowed to Zhou Yang with a happy face and said, "thank you for your grace. Then I won't bother you. I'll kill the demon and seize the treasure. I'll leave!"