Even the gray matter above the horizontal meridians, when it came to the outside of the Endless Abyss, it could not automatically exchange with the air current, Yan Yun didn't understand it at first, but now that she thinks about it, it must be because the world outside her Endless Abyss is missing a kind of qi.

A kind of qi that belongs exclusively to the endless abyss, this kind of qi, Yan Yun guessed that it was most likely black qi.

It's just that this gas is not yet fully mature, so let's call it gray gas for the time being.

But why is gray matter formed to absorb Reiki? Then there is only one answer, aura and ash, there can only be one.

Gray matter is to block the invasion of black gas, but at the same time, that layer of gray matter also needs to absorb black gas to consolidate stability.

Seeing that she had not moved, Duocai thought that she was worried about something, so it spoke again.

"Forget it, I don't know you yet? You can do what you want, anyway, I'm telling you, everything will be fine. Although its tone was a little depressed, it was not Yan Yun's expected persuasion, nor was it cold blame, but an understanding that was beyond her expectations.

Yan Yun nodded, and she escaped into the spiritual vein.

The underground is not dark, and under the illumination of the aura, the whole underground is like a fairyland, like a dream, and the illusory is like a fake.

She was cut off from her spiritual veins, and an invisible wall stood in front of her.

The aura can't get out, and the gray qi outside can't get in.

But all this is not difficult for Yan Yun, but she has to figure out why here, the aura is harmful to the living body?

She needed someone to help her verify.

Yan Yun is walking underground, it is impossible to find people here, but he can definitely find spirits!

She scooped up a chubby, hamster-looking spirit that was sleeping soundly and brought it to the wall.

The little elf blinked her cute big eyes, and she was not afraid of her, because even Yan Yun had never realized that after truly integrating into this world, the qi on her body was extremely gentle and vigorous.

This feeling is like a bamboo knot that is rejuvenated and climbed after the spring rain.

Yan Yun gently rubbed the elf's hairy head with his fingertips, and then stretched out his fingertips and put them on the wall, feeling the intersection of qi with his heart.

She slowly poured a trace of aura into her fingertips, trying to attract it and break the confinement of the wall.

Although the aura did not seep out of her body, it also caused the restlessness of the spiritual veins all the time.

Time passed minute by minute, and when Yan Yun almost thought that he was going to fail, a trace of invisible aura broke through the confinement of the invisible wall, but it was not coming towards Yan Yun.

Instead, it rushed directly into the elf's body.

Everything in front of him happened too fast, making Yan Yun frown slightly, staring at the little elf nervously.

At first, it was fine, and it looked fine, but after half an hour, it began to wilt and could not see the slightest bit of energy, and Yan Yun could clearly feel the disorder of the aura in its body and the chaotic gray qi.

Seeing this, she turned into qi again, and devoured the aura in the little elf's body with a brutal momentum, and the little elf slowly recovered.

She understood that if she only lived in a world with only gray energy, then for the creatures here, it was safe and not dangerous, but once the gray energy and the spiritual energy converged, neither of the two would let anyone, and the gray energy would begin to devour life.

This also explains why, at that time, after the ore vein exploded, those black qi would devour life so wildly, at first Yan Yun thought that this was its characteristic, but now it seems that it is not.

Immediately afterward, she thought of Lian Heng, maybe she could first think about how to create that layer of gray matter to attach to the meridians.

Yan Yun naturally didn't need it, her meridians were tempered by ice flames, nourished by spiritual energy, and even black qi was difficult to infect.

The next question is, what is gray matter? The first thing that came to her mind was the air that flowed through the air.

Although I don't know if it's wrong, it doesn't matter, she can try it, if it's not, it won't be a loss for her.

Immediately after, the ice flame flowed out from the center of her eyebrows, and the little elf was so frightened that it hid in her sleeve, and seeing this, Yan Yun gently put it on the ground.

She wanted to refine this qi.

Refining requires a refining furnace, but the ice flame is the spiritual fire of the world, so what if it is refining empty-handed?

Yan Yun had hardly ever touched these, but she thought that since it was refining, the principle should be similar to that of water mist condensing into ice cubes.

For this reason, she briefly fell into a difficult situation.

For a while, she had thought of many ways, but she really needed to find an experiment, so she looked at the little elf on the ground and waved it back to sleep.

Yan Yun manipulated the ice flame and released a trace of fireworks, and the flames released by the ice flame were not hot, but cold, with a chill that engulfed everything.

The surrounding gray qi was forced to gather together, and Yan Yun continued to compress it, lowering the temperature to an extremely low temperature, and the entire underground was covered with frost in an instant.

The gray qi controlled by her has almost nowhere to escape, and she uses her control of fireworks to the extreme, trying again and again, failing again and again, and continuing again and again.

The fine sweat on her forehead turned into a thin layer of frost as soon as it was exposed, and the faint blue light emitted by the fireworks made her as cold as ice and snow.

As the minutes ticked by, a gray pill-like thing appeared in the scorching ice flames.

At this time, Yan Yun slowly stopped her hand to retract the ice flame, and the moment she stopped, she almost fell, without the supply of spiritual energy, this refining consumed too much of her essence.

She slowed down, looking down at the ground that had become an ice cave, looking around for the little elf.

The little elf's body was frozen a little, nested in the grass nest, and when he saw Yan Yun coming, he hurriedly turned out his soft belly and faced her, his eyes without impurities were full of love and worship.

"I'm sorry."

Yan Yun was a little embarrassed, leaned over and put it in the palm of her hand to provide it with warmth, and when its body warmed up, she took out the gray pill.

Stuffed into the mouth of the little elf, she was also a little worried in her heart, ready to save the little elf at any time, and her moist and powerful eyes waited without blinking.

The pill melted in the mouth, and the gray qi that had been refined escaped directly into the spirit meridians, firmly attached to the meridians with a strong attitude, and wrapped them layer by layer.

And there was no discomfort on the little elf's face, seeing this, Yan Yun breathed a sigh of relief, but more problems followed.

If this qi is directly cultivated into a physical entity, the control of temperature and air pressure is quite strict and complicated, which is too difficult.

It's too hard here, but it's for the people here.

This is difficult for Yan Yun, but it is not difficult to become proficient, it just takes more time, but! It's all based on the fact that she has an ice flame.

So is there an easier way?

A method that is so simple that it doesn't require a brain to do, although it sounds a bit fantastical, but Yan Yun really needs this method.