"Why is it so cold?"

Yu Xia was surprised, and stepped forward to reach out and touch it.

It's cold and it's hard.

The ordinary rocks were almost cleaned, and the entire stone wall was not even fine iron, only Mucuna with a dark golden glow, exactly like the stones that Yu Xia had seen at the Casting Conference.

"I've heard that there is a lot of mucuna in iron ore, and now it seems that it is true. This pit is supposed to be the core area for the production of black stone. ”

The stone walls of this cave are hollowed out, and the rock debris on the ground has been cleaned up, which looks like an ordinary cave, and the mining process seems to be very slow.

Yu Xia stood in front of the stone wall for a while, and couldn't help but shiver from the cold. It's just that what is more bizarre is that this cold is not the same as the ordinary cold, but the kind of cold that penetrates deep into the bone marrow.

It's as if your soul will be frozen if you stay in it for a long time.

Although the five senses are limited, Yu Xia can also see that the few mining slaves who went out are all attached to them.

It was a talisman, not so much the clothes of the miners as it was the talisman that protected their sanity.

The talisman on his body that sensed the black stone became hotter and hotter, and thinking of what the miners had said, Yu Xia was almost certain that the black stone was hidden behind these mucunens.

However, it is difficult to mine Mucuna, and the amount of black stone is so scarce that those miners may not be able to mine much in a year. And Yu Xia has limited time, if he doesn't have a target to start, it is likely to delay the opportunity.

However, in this mine, the Xuanshi has five sensory limits, and even if there is a hint, Yu Xia cannot determine the precise location of the Wuxuan Stone.

"The law of heaven is clear, the law of the earth is spiritual, the yin and yang are fine, and the water spirit is visible. Spiritual light and water, reaching the heavens and the earth, the law is pursued, the yin and yang law mirror, the true form is quickly revealed, and I am the true monarch of Sanmao as the law! Haste as a law! ”

Yu Xia's eyes lit up with a ghostly fire, and her eyes could already see many things that others could not see, but now, with the blessing of the Yin and Yang Eye Opening Mantra, she finally broke through the restrictions of the mine cave on the five senses of the Xuanshi, and sensed several pitch-black air masses surrounded by the Mucuna mine.

The black color of the black stone was as black as ink, and Yu Xia could still distinguish their location in the dark golden mucuna package.

On the entire stone wall, there are only seventeen black stones.

They are also encased in Mucuna gold, which is known to be difficult to cast.

How to mine?

Yu Xia was thinking to herself, and suddenly felt that one of the black gases she saw in her eyes seemed to be wrapped in other breaths, and the color was even darker. It's just that the black gas is a bit deep, and I'm afraid it's not easy to mine.

Could there be something else in the black stone?

Yu Xia was thinking to himself, took out the mine chisel with the pattern of the formation prepared in advance, and pressed it against the stone wall, and knocked it a few times with a hammer.

In order to avoid too much movement, Yu Xia didn't dare to exert too much force, so he chiseled dozens of times before he could chisel a fist-sized piece of Mucuna gold.

There is no black stone in this mucuna gold.

Last night she deliberately carved a formation pattern on the chisel for the characteristics of fine iron and mucuna, in order to speed up the speed of mining, if she was not worried about being let go of her hands and feet, how could she chisel a piece of mucuna wrapped in black stone today, but this mine hole is empty, just a few times she chiseled in the hole has an echo, if the movement is bigger, it is easy to attract the attention of others.

Yu Xia frowned, she thought that she was well prepared, but she didn't expect to underestimate the hardness of Mucuna, and even she didn't expect that the black stone would be wrapped in the entire stone wall of Mucuna!

This made her feel in a hurry.

She didn't know much about casting mining, and she didn't have any ingenuity to take out the black stone smoothly at this time, but it was not easy to come here today, and if she didn't do it this time, it would be difficult to find such an opportunity in the future.

Yu Xia put away the chisel and hammer, palms of both hands against the stone wall, and ran the Zhengyi Heart Method.

Several wind blades flew out of her palms and landed on the stone wall, leaving a few shallow marks.

It doesn't work much, and it's not even as good as chiseling with a chisel.

Yu Xia sighed, his left hand unconsciously pressed on the stone wall, and his heart was a little urgent.

The time for the illusion to incarnate is limited, and the time for those few Xuan Masters to faint is also limited, and it is necessary to avoid arousing the vigilance of the two six-rank Dao masters who are guarding in the shadows, and what is even more embarrassing is that Zhong Mengxi, who is pretending to be Senior Brother Lu in front of the mine, may be discovered at any time.

Although Zhong Mengxi has the ability to disguise himself and the treasure that conceals his gender, he is an ordinary person who has not cultivated himself after all, and Senior Brother Lu is the cultivation of the five-grade Xuantai!

No matter how you disguise it, this self-cultivation can't be disguised.

At the beginning, they took this risk, but it was also because the mine was guarded openly and secretly, and there were only five Xuan Masters in total.

However, if you are not afraid of 10,000, you are afraid of what happens, as long as there is a Xuanshi with cultivation in the Shangguan family, then Zhong Mengxi will be easily recognized.

"You have to get the black stone as fast as possible."

If it doesn't work, Zhong Mengxi's safety is the main thing, and he will retreat first.

Yu Xia was thinking about the way out, and suddenly felt that something was wrong.

"Why isn't this mine so cold?"

Yu Xia was stunned for a moment, and suddenly noticed that the palm of his left hand pressed against the stone wall was slightly itchy.

"This ......"

Yu Xia suddenly remembered something, but instead of taking his left hand back to look at it, he looked at the mine intently.

Previously, she was looking for the location of the black stone, but at this time, Yu Xia found that the place that she had ignored before was that the reason why this cave was extremely cold was not so much because of the frozen nature of Mucuna gold, but because it was filled with a rich yin qi!

That's right, the entire mine was filled with a dark aura, this aura was so cold that people couldn't help but shiver, and compared to the cold of the body, this aura hurt the soul more seriously.

"No wonder ......"

Only then did Yu Xia realize that the talismans attached to the bodies of those mining slaves were not because the Shangsun family was afraid that these ordinary people who had no cultivation would be frozen stupid, but because they were afraid that they would stay in the mine for a long time and the yin qi would invade their bodies and damage their roots.

The reason why this Mucuna has the property of freezing is not because it is cold, but because it is heavy and extremely pure. Because of the five sensory limitations, he didn't notice it at the first time, and presumably the jackdaw began to absorb this yin qi because he put the palm of his left hand on the Mucuna gold.

Thinking of this, Yu Xia couldn't help but smile slightly, the jackdaw hadn't moved for a long time, and she had found many ways to nourish it, but to no avail. I didn't expect such a rich and pure yin qi here to make the jackdaw react.

Mucuna, which had lost its yin energy, turned into powder, and the stone wall fell down with ash, the stone wall became thinner and thinner, and Yu Xia's hand on the stone wall pushed forward more and more. However, with a stick of incense, Yu Xia had already touched a stone with a thick black color and smooth texture.