However, I have collected a lot of refining materials.

Hundreds of stone chambers, not all of them were as empty as Yang Kai's first investigation, some of them also had a lot of materials for refining in the stone chambers, most of these materials were ores and the like, and there were also some strange things, all of which could be preserved all year round without damage.

That's a lot.

Hundreds of stone chambers, even if only one-tenth of them had something for Yang Kai to collect, it should not be underestimated.

Yang Kai was not satisfied, it was because the harvest was a little different from his expectations, and it was not as rich as he imagined.

However, after investigating along the way, Yang Kai did find something that interested him, that is, the deeper he went, the richer and purer the fire aura gathered in those wall caves.

This is very easy to understand, in the earth lung fire pool, the further down it is, the closer it is to the origin of the fire pool. When he started refining Xuanyin Kwai Water, he had to find the hole in the wall below.

Two days later, Yang Kai had already penetrated deep into the deepest part of the Earth Lung Fire Pool, and in this deepest position, there were only two wall caves left to explore.

The location of these two wall caves is very deep, at first glance, they are used by the most outstanding refiners of that sect, one left and one right, not far apart, the entrance of the cave looks ordinary and there is nothing new, but since Yang Kai has seen the inside of some wall caves, he knows that if he does not investigate deeply and carefully, he will never know if there is anything in these wall caves.

I hope there will be some discoveries, Yang Kai thought secretly, and casually found a wall hole on the left. The figure flickered, like an arrow from the string, towards the hole in the wall.

The next moment, Yang Kai appeared in the wall cave passage, and after standing firm, his footsteps did not stop, and he continued to go deeper.

This wall hole was hundreds of zhang deep, and Yang Kai walked for a while without reaching the end, which couldn't help but make him amazed at the same time, and his heart became more and more expectant. Sure enough, it's a wall hole for the best refiners in the sect. The depth of the construction seems to be a little different. I just don't know if there are any good things in the road.

After walking forward for more than a hundred feet, there was a sudden white light in front of him, the light was soft and not dazzling. There are even some calming effects. Yang Kai was when he saw this glimmer of white light. I felt relieved, and inexplicably welled up with pleasant thoughts.

A few more points faster on your feet, very fast. Yang Kai rushed into a huge stone chamber.

This stone chamber is more than ten times larger than any of the hundreds of stone chambers he has been investigating in the past two days, and the sky is dozens of zhang high, and I don't know what exquisite means have been arranged in the tunnel, even if the stone chamber is deep in the ground, the air is still clear, without the slightest feeling of turbidity, this alone is not comparable to other stone chambers.

The other stone chambers have a more or less depressing feeling.

And around the stone room, there are only eight fist-sized, white balls, the white light, is the eight balls emitted, where the light passes, it is even more magical to stabilize the soul.

Yang Kai raised his eyebrows, and after his gaze only swept over the eight round balls, he put his mind on the entire stone room.

However, after he finished exploring this stone room, he was still in a mood of expectation, and he couldn't help but sigh lightly, this stone room was built so magnificently, and the weather was majestic, he thought that there must be some good things stored in it.

Who knows, this stone chamber, like most stone chambers, has nothing but a huge refining furnace in the middle.

The formation in the stone chamber was also still in operation, extracting the purest part of the firepower of the Earth Lung Fire Pool, and it had been baking this huge furnace for tens of thousands of years, and it never stopped.

When Yang Kai's gaze swept over this refining furnace, his eyes lit up and he grinned.

He found that this refining furnace was not damaged, and it was very well preserved!

He had found hundreds of refining furnaces in those stone chambers before, but no matter how high the grade and quality of those refining furnaces were, they had been scrapped and useless after tens of thousands of years of burning.

Among them, there were even Void King-level furnace tripods, which made Yang Kai feel very distressed.

And now, he actually found an intact refining furnace here, whether it was because of a coincidence or what, the quality of this refining furnace was definitely not low, and it must be a secret treasure of the virtual king level.

Only a refining furnace of this grade can have a chance to survive.

While Yang Kai was overjoyed, he hurriedly began to look for the control center of the formation in the stone chamber.

Unlike the other stone chambers, where there was only one stone pier as the control center of the formation, in this stone room, there were a total of four stone piers, which really made Yang Kai take a lot of effort to completely stop the entire formation.

He hadn't cultivated the exercises of the Ice Attribute Technique, nor did he have a secret treasure of this Attribute, so he could only wait for the temperature in the refining furnace to slowly dissipate.

After about a day, the crimson light on the refining furnace gradually converged, although it still looked extremely hot, but Yang Kai's self-imposed strength was not weak, but he was not afraid.

Quickly walked to the refining furnace, Shen Nian released a probe, and found that as he had guessed, this refining furnace was really a virtual king level, but the grade and quality were like this, he couldn't judge it for the time being, it should not be lower than the middle grade of the virtual king level, the entire refining furnace was as high as five zhang, the same three-legged and two-eared style, unlike the refining furnace that Yang Kai had seen before, it was not carved with a dragon and phoenix pattern, but a whole strange bird.

Yang Kai looked around the refining furnace and found that he didn't recognize this strange bird, it looked like a phoenix, but it also had the shadow of a crane, the bird's beak was long, its claws were powerful, it dragged three long tail feathers, its body was elegant and slender, and the pieces of feathers were carved vividly, it looked vivid, as if it was about to rush out of the surface of the refining furnace.

Looking at it carefully, Yang Kai secretly recalled the classics he had read from Zong Ao, and when he thought about what kind of demon beast this strange bird was, his face suddenly changed, and his eyes narrowed towards the eyes of the strange bird.

At that moment just now, Yang Kai actually had a feeling that he was being spied on by the other party.

But when he looked closely, he found that the strange bird was still exactly the same as before, lifeless, which made him stunned.

However, with such a warning sign, Yang Kai didn't dare to take it lightly anymore, who knew if there was anything strange in this refining furnace? He continued to release his divine thoughts, carefully probing the inside of the refining furnace, and making sure that there was nothing else in it except for a puddle of burned materials, and then he was relieved.

This refining furnace is a good thing, you can't miss it, he can't use this kind of huge furnace for alchemy, since the Saint Yuan in his body was transformed into a demon flame, Yang Kai Alchemy no longer uses the Saint Yuan, but uses the power of the Divine Consciousness Fire.

However, this thing can be brought back to Yang Yan to use, although she has a stone golem to fight, and there is no need to worry about refining materials, but when refining the secret treasure is the last step, shaping and carving the magic circle, it is the same need to use the refining furnace.

Yang Yan helped him a lot, and these days he has been doing his best to arrange formations for him and refine secret treasures, and the two of them even enjoy the secrets of the stone puppet and the ethereal crystal at the same time, so even if the refining furnace in front of him is a secret treasure of the virtual king level, Yang Kai will not be stingy to give it away.

After making such a decision, Yang Kai released his divine thoughts, wrapped this huge refining furnace, and as soon as his divine thoughts moved, he wanted to collect them into the space ring.

At this moment, the abnormal change protruded, and the refining furnace, which had been almost cooled, suddenly hummed, and clusters of astonishing flames emerged from around the furnace ding, and the flames almost burned towards Yang Kai's divine sense.

Yang Kai was shocked, and hurriedly took back his divine thoughts, and he also suffered a loss, and the thoughts that were released were burned in half at once.

His face turned pale, and Yang Xingxing was horrified!

His divine consciousness possessed the magic of the fire of divine consciousness, and it was extremely hot, even before discovering this earth lung fire pool, with the heat of the fifth layer, he could not destroy his divine consciousness thread so quickly, but the flames that burst out of this furnace were so powerful, didn't it mean that the flames were countless times more terrifying than the heat of the fifth layer?

Moreover, there was a faint spirit in the flames, and after repelling Yang Kai's Divine Consciousness Thread, it shook and disappeared again, as if everything just now was just an illusion and had not happened.

Yang Kai naturally knew that the Dao was not an illusion, his own thoughts had lost so much, and his head was splitting, how could it be an illusion?

Before he could figure out what was going on, the strange bird carved on the surface of the refining furnace actually came to life all of a sudden, and its elegant body flew out of the refining furnace, turning into a beautiful and abnormal red firebird, and the amazing firepower emanated ferociously from this strange bird, and after it only circled slightly, it shot directly towards Yang Kai.

Yang Kai's face was extremely ugly, and he exclaimed, "Machine Spirit!"

He immediately understood why the flame was so spiritual, and he even understood that being spied on by the strange bird just now was not an illusion, but a real thing, but the other party was not flesh and blood, so Yang Kai couldn't detect it.

This is actually a machine spirit, the one born in the refining furnace, I don't know if the Dao itself exists, or if it was slowly born after tens of thousands of years of burning by the fire of the earth's lung fire pool.

But as soon as he remembered that this was a Void King-level Secret Treasure Artifact Spirit, Yang Kai's head was as big as a fight.

He had fought with many people, and he had seen all kinds of high-grade and low-grade secret treasures, but there had never been a secret treasure with such a fierce machine spirit.

Machine spirits are inherently rare.

First, the conditions for its birth are very harsh, and it requires great luck, and second, the time consumed is quite long, and any secret treasure with a machine spirit has gone through at least a thousand years or even more time precipitation. (To be continued......)