According to the sound of percussion, after the second empty mountain guessed that there was only one foot left on the stone wall, Xiao Lu Dan even detected that there was no lifeform inside, which made Bai Hao relax a lot, but he had not completely relaxed his vigilance.

"Open it!"

Sure that there was not much danger, Bai Hao immediately said to the Second Empty Mountain, and as his words fell, the Second Empty Mountain also turned into a knife with spiritual power, cutting the last piece of cold iron stone that blocked everyone.

"Is this, glowing water?"

I saw that the second empty mountain had just taken away this piece of cold iron stone, and bursts of faint blue light suddenly radiated from it, but in an instant, it filled the direction of the exit, and the entire mine cave was a dark blue.

Originally, although the cold iron ore was blue, it was just his color, and it would not emit a little light at all, and it was always black in the mine without a light source, which was also due to the fact that Bai Hao and several people were in the foundation realm, and the five senses were strong and terrifying.

Otherwise, in this place where you can't see your fingers, not to mention mining, even walking is a big problem for ordinary people.

And now, the light emanating from behind the stone wall directly illuminates Bai Hao and the others.

I saw that behind the stone wall, it was as the little boiled egg said, a round hollow with a height of more than one zhang and a diameter of seven or eight zhang, the top of the cave was lined up one after another, and the stalactites formed by cold iron ore were of different sizes.

The largest ones are located in the middle of the cave, and at this moment the top of the stalactites has condensed a drop of dark blue liquid, as if it is about to fall down at any time.

I saw that in the middle of the cave is a small pool, the liquid in the pool is from the stalactites above, from time to time there will be a drop of blue liquid dripping, or falling in the pool, or falling outside the pool, with a small ditch formed somehow flowing into the small pool.

"No, it's not water, have you ever seen water glow?"

He added: "If my guess is correct, this is the essence liquid state of the cold iron ore, maybe the essence of the cold iron." ”

"Cold Iron Essence, what is that? Is it also Cold Iron Ore?" Second Empty Mountain has not seen the common sense of cultivation, so naturally he doesn't know what the cold iron essence that Bai Hao said in his mouth is, not only him, but also many monks, unless it is a refiner who will often come into contact with refining materials, it is difficult for anyone to know what the essence of cold iron is.

Even if you are a practitioner, you won't know the essence of cold iron if you don't know enough, without him, the essence of cold iron is too harsh to produce, it must be a complete vein, and there is no trace of destruction in order to be born, it is possible, not necessarily possible.

And as long as a little bit of cold iron ore is excavated, there will be no chance of the essence of cold iron in it.

Each vein, in its complete state, is equivalent to an individual, just like a living body, the essence of the vein will circulate continuously, and finally after countless years, a miracle will be born, the essence will be condensed by the entire vein, and eventually either turn into a spirit, give up the entire vein, and transform into a spirit.

Either it is the marrow, that is, the entire ore vein is condensed into a pool of essence liquid, so that the quality of the entire ore vein is sublimated and transformed into a more advanced species.

Then, in the process of slowly absorbing energy, he constantly released his own attributes, infected the ordinary stones around him, and turned them into ores in the same vein, but the ore at this time was no longer the ore before, and the quality was at least improved by one level.

Obviously, the cold iron ore vein in front of him belongs to the second type, choosing to concentrate the essence of the entire ore vein, and then upgrade it to a more advanced ore.

However, now this vein has no ability to upgrade, any promoted vein is inseparable from integrity, it can be said that since Bai Hao cut off a piece of cold iron ore, this vein that has been promoted, and it is about to transform is destined to be only a three-grade cold iron ore.

"Cold Iron Essence, that is the essence mineral concentrated from a complete vein......

It seems that we have come early, and if it is a few years later, this will not only be a Sanpinhan iron vein, but another high-grade vein. ”

After talking about the source and function of the essence of cold iron, all of a sudden, whether it was the second empty mountain or the little boiled egg, they all looked at the small waterhole in front of them with bright eyes.

Without him, just because the cold iron vein was promoted to half, the essence of this waterhole cold iron left behind was of high quality.

Cold iron ore is a third-grade ore, and there will be a large number of fourth-grade cold iron ore, and along the way, Bai Hao and the second empty mountain got all third-grade cold iron stone, and there was no little bit of fourth-grade cold iron.

And the ore content in many cold iron ores has become very low, originally the two thought that the ore veins were growing, and those ores with low content were because they had just been formed, so the ore content in them was low.

But looking at it now, it was not just formed not long ago, but because it was upgraded by the ore veins and absorbed a large amount of essence, resulting in an extremely low content.

The ore vein upgrade is not the promotion of one product and one product, but the promotion of one level at a time, and the ore of the Xiuzhen Realm is divided into nine grades, and the nine grades are classified into three grades, low-grade, intermediate-grade, and high-grade ore.

Cold iron ore is a low-grade third-grade ore, and if this promotion is successful, it will become an intermediate six-grade ore.

The current situation is that the essence of cold iron has reached the intermediate six-grade ore, and after absorbing all the ore essence, it can be transformed into a real medium-grade six-grade ore vein, and the ore formed again is the intermediate six-grade ore.

The essence of cold iron is different from cold iron ore, which can only be used to refine magic weapons, while the essence of cold iron is an ore, and it is also a kind of spiritual object, a treasure of heaven and earth.

Looking at the essence of cold iron in front of him, Bai Hao knew that this was an opportunity, a big opportunity.

"The cold iron essence can temper the flesh body, no matter who the three of us are, the flesh body is too low-level at the moment, so I decided that we don't need to charge this cold iron essence, and directly temper the flesh here. ”

"Ahh

When the second empty mountain heard this, he immediately felt a pity, to know the six-grade spiritual object, what a precious thing it is, it is completely unavoidable, in places such as Black Wind City and Qinglin City, I dare not say what will happen in the future, anyway, I haven't heard of a six-grade spiritual object anywhere yet.

It is the fifth grade of this level, which is rare to appear once in several years, which is enough to see the rarity and preciousness of the sixth-grade spiritual object.

Like the earth crystal, it belongs to the five-grade spiritual object, and every time it appears, it attracts all forces to rush to make a move, not to mention the more advanced six-grade cold iron essence.

"Yes, empty mountain! You must know that all wealth must be strong enough to hold,

That's right, the essence of the six-grade cold iron is precious, and if you sell it, you can get a large number of spirit stones, but the acquisition of spirit stones does not have to sell the essence of cold iron, we can sell other things, idle magic weapons, demon beast materials, are all ways to obtain spirit stones.

On the contrary, the essence of cold iron is a priceless thing, and if it is sold this time, it will be difficult to find it if you want to temper your physical body in the future. Bai Hao took out a few large jade bottles and filled them with some cold iron essence.

"That's it, I've already collected some, and now the three of us have entered this waterhole to cultivate, trying to absorb the essence of cold iron to temper the flesh,

Hehe, after we have cultivated, we will sell the rest to others. Putting away a few jade bottles, Bai Hao said with a wicked smile.

While speaking, under the leadership of Bai Hao, the second empty mountain and the little boiled egg both entered the waterhole to cultivate together, and both of them were running exercises, absorbing the essence of the essence of cold iron into the body through the pores of the body, filling every cell.

Although Xiao Lu Dan has no exercises, his physique can also automatically absorb the essence of cold iron and strengthen himself.

I have to say, sometimes it's really tricky.

When Bai Hao and the three of them were quietly cultivating, the black and white forces in the Huoyun Secret Realm, as well as the various forces in Black Wind City, were still mobilizing personnel, searching for the traces of the two of them everywhere.

At first, he could wait for the rabbit leisurely, waiting around the Huoyun Secret Realm, waiting for Bai Hao to appear.

And then one day, no one,

It's been two days, and it's still quiet.

Three days passed, and there was not even a bird, and now everyone couldn't sit still, and began to take the Fire Cloud Secret Realm as the center, checking for suspicious people everywhere, hoping to find the monk who took pictures of the Fire Spirit Bead that day.

In their opinion, since this person has won the fire spirit bead, he will definitely enter the secret realm, so after making sure that no one has entered the secret realm, they can safely block the entrance.

The result was naturally a big disappointment, for three days in a row, Bai Hao did not show his head at all, as if the world had evaporated, which made these people extremely angry.

The auction bid failed, and the winner was even more unheard, and there was no place to eat if he wanted to eat black.

In the next month, some people retreated because they had temporary things or were unwilling to wait, because there were so many people present, and they might not be able to get the benefits.

However, there are more people who stay, and they will not give up if they don't find Bai Hao, these are all people who think that their strength is not bad, in order not to let the black and white Shuangsha family dominate, more people temporarily formed a small group.

Looking around the Fire Cloud Secret Realm, hoping to find Bai Hao.