As soon as the Shen Nian You left the body, it was twisted and deformed by the scorching high temperature. Although it was released and closed, Yang Kai was extremely fast, but a few Shen Nian You were still burned to death.

This made him groan. Fortunately, his spiritual sense was extremely powerful and the warm god lotus nourished his soul. He didn't take this loss seriously.

After exploring this moment, Yang Kai had already locked a certain position, his eyes crossed thousands of feet away, and looked over there, and he saw that a terrifying red heat wave gushed out at one point on the ground. The heat wave was like a dragon going out to sea, hovering upwards, as if it was about to knock out a hole in the red curtain that was hidden in the sky. However, this layer of restriction on the Liuyan Sand cannot be fought against by the heat wave. The heat wave just rushed into the sky and merged into the red curtain, and it was like a mud cow entering the sea, disappearing.

A stream of extremely pure fire spirit swayed leisurely from the place where the heat wave appeared. After sweeping through Yang Kai's position, it continued to spread around. In an instant, sand and stones flew in the fifth floor of the flowing sand, showing signs of the arrival of doomsday.

Yang Kai moved his heart and stood there for a long time. He waited until the movements there calmed down. Then he took a arduous step and walked towards the other side.

Two hours later, Yang Kai came to a place thousands of feet away, staring at a huge pit in front of him, his face gloomy and gloomy.

This is a huge pit. Standing on the edge and looking down, I saw the red lava flowing like water. It looked extremely stable at this moment, not as terrifying as it had erupted before. A stream of pure fire-type spiritual energy escaped from the bottom of the pit. It merged into the environment of the fifth floor, and gradually strengthened the power of the fifth floor.

Occasionally, some gravel fell into the pit, fell into the lava and turned into ashes. The terrifying temperature inside can be imagined.

It looks like a crater, but it is not a volcano, because it is a huge pit that appears on the flat ground, and there is no magma eruption, forming a volcano.

Moreover, Yang Kai also keenly noticed that the pit was well connected, and there seemed to be countless branching forks. From time to time, you could hear movements and stillness coming from below, which looked like breathing, which was very regular.

Yang Kai's thoughts changed sharply, and a name blurted out: "Di Lung Fire Pool?"

After saying that, Yang Kai was stunned on the spot for a moment. He seemed to be unable to believe it.

The Earth Lung Fire Pool is an extremely rare underground fire vein. It is most loved by weapon refiners. Because when refining weapons, the weapon refiners can use the power of this underground fire vein to temper the materials, which can save the weapon refiners a lot of energy and save countless time.

However, there are very few sects that can own this kind of Earth Lung Fire Pool. Yang Kai has not come into contact with many forces and does not know much about the secrets in those sects. But he is sure that there are absolutely no more than three sects that can own Earth Lung Fire Pool as a special place for refining weapons on the entire Dark Star.

One of the criteria for judging the earth lung fire pool is the pattern of inhalation and inhalation, which is as if the lungs are tightened, which is very obvious, so Yang Kai recognized it immediately.

Judging from the purity of the fire spirit radiating from the Earth-lung Fire Pool in front of you, this fire pool is the best among the best. Any weapon refiner can maximize his ability here, and can refine secret treasures that cannot be refined normally, so that the performance of those secret treasures can be maximized.

All kinds of thoughts flashed through his mind, and Yang Kai looked surprised.

Although he could not take away this kind of earth lung fire pool, it was the best place for him to refine Xuanyin Kui Water. He did not expect that he could find such a place. He originally planned to find a place nearby to start refining Xuanyin Kui Water, but now he decided to go down and take a look.

Although it is dangerous, the more dangerous the place, the greater the profit. Warriors can never be afraid of any danger when practicing.

Thinking of this, Yang Kai's expression became firm and did not dare to be negligent. He urged his body-protecting magic flame to the maximum extent. At the same time, he sacrificed his purple shield to activate the power in the shield, forming a small sandstorm that wrapped him.

It was not over yet. Yang Kai did not hesitate to Shengyuan's squandering, gathering dozens of vast sky shields and flying around him.

After doing this, he took a deep breath and jumped directly towards the hole.

In the air, Yang Kai looked extremely focused. After scanning his eyes, he immediately saw a good place to settle down. His figure twisted and shook in the air, and the person had already reached the sky above the place to settle down. He stepped gently under his feet and gently fell to the other side, stepping on the other place to look forward to the previous one again.

Silent...

The lava below was very unstable, and it burst out from time to time. The sputtered molten squirted from all directions, making the walls around the pits riddled with holes.

The lava here is much more powerful than the lava in the ancient ban that Wei Guchang and others fell before.

A lot of lava hit Yang Kai, and the Haotian Shield broke in one touch. In the blink of an eye, dozens of Haotian Shields flying around Yang Kai were exhausted.

The power of wind and sand rolled up by the sandstorm guarding Yang Kai swept the lava aside. Occasionally, some people broke through the wind and sand blockade were also blocked by Yang Kai's magic flames, allowing him to avoid worries and concentrate on finding a suitable place to settle down.

While he went deeper, he replenished the damaged Haotian Shield.

After about thirty breaths, Yang Kai's eyes lit up, and he shot to one side with his body and shot directly into a hole in the wall.

As soon as Yu Yu entered the wall hole, Yang Kai felt that the heat around him had slowed down a lot, as if he was blocked by an invisible layer of force, which made Yang Kai suddenly curious.

Turning around and looking out, Yang Kai looked stunned, showing an incredible expression.

Because he actually saw countless wall holes similar to where he was at the opposite cave wall. The wall holes were obviously not naturally generated, because there were some numbers engraved at the entrance of the cave, sorted by A, B, C and D.

These wall holes were actually opened up by man.

Yang Kai pondered for a moment, and immediately realized it. He quickly turned around and looked into the hole where he was.

The wall hole is very deep, about thirty feet long, and it starts with a straight passage. After thirty feet long, Yang Kai immediately appeared in a spacious stone room.

The surrounding stone walls are dotted with some strange stones for lighting. Although countless years have passed, they are still emitting a soft light, making the place not appear dim.

With the help of these lights, Yang Kai put away his shield and magic flames and began to look at the stone chamber.

The ground of the stone chamber is flat, and a huge magic array is engraved on the ground, which seems to be still playing a role. A stream of and its hot forces are transported in from outside by the magic array and then gather towards the center.

In the center, there is a huge furnace, three legs and two ears, dragons and phoenixes, and the style is simple. It looks like something that has been around for the past few years. It seems that it is red and emits extremely hot high temperatures because it has been baked by the heat for many years.

After a brief investigation, Yang Kai found that the furnace was actually a virtual lower-grade refining furnace.

Yang Yan used a refining furnace to temper the materials, but since the stone puppet helped her, she no longer needed to use a refining furnace. She only occasionally used it when she refining high-level secret treasures and finally shaping them.

As expected, when Yang Kai saw such a refining furnace, he showed a hint of clarity.

When Yang Kai saw so many stone walls opposite just now, he had a guess in his heart. Now that he saw the situation in the stone chamber, he naturally verified his thoughts just now.

This Earth Lung Fire Pool is really the place used by the weapon refiners of the sect to refine weapons.

It’s no wonder that there is such a treasure land that the sect’s weapon refiners naturally need to make good use of. The wall holes must be specially dug out for use by the weapon refiners.

This unknown ancient magic circle that exists in the stone chamber can extract the scorching power from the earth lung fire pool into the wall hole for the weapon refiner to drive it.

What a big deal! Yang Kai was secretly shocked. It is definitely not something that ordinary people can do if they can arrange these methods under the Earth's lung fire pool. At least they need strong people in the Void King Realm.

However, what made him feel regretful was that the virtual-level low-grade refining furnace in front of him had melted a lot, and it was not in a complete form. It seemed that after so many years of baking, it could not bear it.

The reason why magic circles can last for tens of thousands of years is definitely because the energy source of the earth lung fire pool continuously provides energy.

Thinking about this, Yang Kai turned around and soon saw a sudden stone pier in a corner. Although Yang Kai still didn't understand the formation method, he had been with Yang Yan for a long time and knew some common sense.

This stone pier should be the control center of this stone chamber formation.

He walked forward and shot out a holy Yuan and poured it into the stone pier. Sure enough, with a roaring sound, the mage that was operating automatically stopped, and the scorching force that had been continuously extracted was no longer poured into this place.

Yang Kai waited quietly for a long time, and after the refining furnace cooled slightly, he walked forward to investigate.

When I saw it, I was extremely disappointed.

After the temperature cooled down, the refining furnace was shattered at once, and it turned out that it was not known what materials were being tempered. At this moment, it had already turned into a pool of unknown things and had no use value.

It’s no wonder that after such a long period of burning, even the precious materials may have been scrapped, let alone the materials that are only tempered with virtual-grade low-grade refining furnaces, how high can the grade be?

But this is just a stone room, and there are so many stone rooms outside.

Based on the principle that you cannot return empty-handed when you enter Baoshan, Yang Kai began to investigate one stone chamber after another.
Chapter completed!