After Yun Yi took Blood Ling'er to the Underworld Holy Mountain, he directly came to the mountaintop platform and began to look for a suitable place to refine the treasure.

"Childe, don't you need to use a large amount of Immortal Qi when you come to the Immortal Mountain to refine treasures?

If this is the case, the slave maid thinks that it is better to go to the belly of the mountain to find a hollow place, not on the top of the mountain. ”

Seeing Yun Yi looking around on the platform, the Blood Spirit Princess couldn't help but say out loud.

"Hehe, Ling'er, you're right, I do need a lot of dark qi for the baby to absorb, do you know where in this mountain there is a place where the dark qi gathers and there is a large amount of dark qi in it?"

Yun Yi smiled, the meaning of the Blood Spirit Princess was exactly what he thought.

"Childe, the slave maid thinks that the underworld qi is made by the volatilization of the underworld stone, and there is a special mining cave for the underworld stone set up by His Majesty at the bottom of the holy mountain here, and the underworld stone there must be quite concentrated. ”

Blood Ling'er approached Yun Yi's side and whispered.

"Hehe, Ling'er, this matter is very good, if I hadn't brought you here, I might have to grope for a while.

Let's go to the mine and see if the aura is stronger than here. ”

Yun Yi picked up Xueling'er, and with a flash of figure, he came to the foot of the mountain, turned around, and sure enough, he found the Stygian Stone Mine Cave that Xueling'er said.

"See the princess. ”

This Stygian Mine Cave is guarded by a team of Immortal soldiers, and the leader of it does not recognize Yun Yi, but he confirmed that he knows the Blood Spirit Princess, and hurriedly stepped forward to greet Dao.

"Well, Your Majesty has an order, let me enter the mine to do something, and you can wait here to guard it. ”

The Blood Spirit Princess came to the Commander and whispered.

"Yes, Princess.

The humble post has received a note from the superior, and the princess asks for help. ”

The Commander saluted the Blood Spirit Princess, and then asked the passage into the cave to be opened.

"Hehe, it turns out that His Majesty has long known that I am coming here. ”

Yun Yi followed the Blood Spirit Princess into the mine and said as she walked.

This Stygian Mine Cave is a mine that has been excavated for a long time, and the entire passage is extremely wide, and there is no trace of narrowness and compactness when you walk inside.

As the two continued to descend, some forks appeared in the mine.

"Childe, we should look for a miner guide, and then there will be more forks in the road, and we may lose our way and not be able to find the location of the main ore vein. ”

Seeing this situation, the Blood Spirit Princess said with some concern.

"Well, it doesn't matter, just go down the widest hole, and you will naturally reach the place where the Stygian Stone is the richest. ”

Yun Yi scanned several forks in the road with his divine thoughts, and had already found the place he wanted to reach.

The Blood Spirit Princess nodded, took the Flame Torch from the cave wall next to her, and was about to continue to lead the way.

Yun Yi stretched out his hand and hugged her in his arms again, and her figure flashed again, and she had come to the deepest part of the Stygian Stone Mine.

"Well, this is it, it seems that this is the core of the entire Stygian Mountain. ”

Yun Yi put down the Blood Spirit Princess and said with great satisfaction.

This is indeed the core of the Immortal Mountain, and the entire mine has become a vast mountainside space here, full of exposed high-purity Stygian stones, emitting a black glow.

The Blood Spirit Princess was choked by the aura here, as if she was drunk, and began to stagger, and she was a little unsteady on her feet.

"Haha, I didn't expect there to be such a layout here, this is simply God help me!"

Yun Yi used his divine thoughts to explore the belly of the mountain here again, and couldn't help but open his mouth and laugh.

"Huh, Ling'er?"

Yun Yi couldn't get a response from Xue Ling'er, and hurriedly turned back, Xue Ling'er had actually fallen asleep, and it seemed that she still couldn't withstand the blowing of the dark air here.

"Hehe, you're really lucky, it seems that you're really lucky to meet me. ”

Yun Yi smiled bitterly, picked her up again, and with a teleportation, she came to the center of the mountain.

There is a large pillar of dark stone like black black jade, which looks like it is dozens of zhang square, as if it is supporting the entire holy mountain.

Around this large pillar, there is a wide open space on all sides, forming a pillar of optimus layout, and it is obvious that the purpose of this stone mine is to separate this stone pillar

Next to this large pillar, there are dozens of jade beds of the same material, neatly arranged around the black jade pillars.

"This must be the place where His Majesty the Emperor of the Underworld and the high-level of the underworld cultivated in their early years, it seems that the immortal stone of the entire underworld is of the highest quality with this stone pillar!"

Yun Yi thought to herself.

He placed the Blood Spirit Princess on one of the stone beds, stood up and bowed to the stone pillar three times.

"The Pillar of the Immortal Stone:

Yun Mou came here to refine the treasure today, if it hurts you a little, Yun Mou will definitely repay you for his enlightenment in the future, and I hope that the Divine Pillar will not worry!"

After Yun Yi finished doing this, he stretched out his hand and took the "Great Ruyi Swallowing Sky Gourd" in his hand.

This gourd has been refining in his dantian inner mansion for the past few years, but the progress has not been smooth.

Yun Yi smoothly placed the gourd on a stone couch, and recited the magic trick in his heart, driving the gourd to absorb the spiritual qi.

The gourd does not refuse to absorb any spiritual energy, and after a while, a black pillar of spiritual energy forms at the mouth of the gourd, and a large amount of spiritual energy begins to pour into the spiritual gourd.

Yun Yi observed for a long time and didn't see any changes in the spirit gourd, so he took out the supreme halberd from the spirit gourd and began to release the dark thunder at the spirit gourd.

He didn't dare to use the thunder to completely refine the spirit gourd, but he controlled the release speed of the thunderbolt, wrapped the spirit gourd with a small stream of thunder strips as thin as silk threads, and slowly refined it.

While the Linghu was absorbing the Spiritual Qi, it was also being refined by the Spiritual Thunder, and this process must have taken a long time.

Yun Yi was idle, so he came to the bed of the Blood Spirit Princess, hugged the Blood Spirit Princess, and began to help her carry out her work.

The Blood Spirit Princess is in a coma, and the spiritual power in her body automatically operates, which is a kind of self-protection of the body.

Yun Yi just used his divine thoughts to follow the spiritual power in the Blood Spirit Princess's body for a week, and he understood the essence of the spiritual skills cultivated by the Blood Spirit Princess.

Yun Yi thought for a while, and the spiritual power in his hand was urged, and he began to change the route of the spiritual power in the Blood Spirit Princess's body, forcibly transforming the exercises that the Blood Spirit Princess cultivated.

Invaded by external forces, the Blood Spirit Princess immediately woke up.

"Ahh

Childe!"

When the Blood Spirit Princess saw Yun Yi treating her like this, she thought that Yun Yi was going to do things to her, and she suddenly became shy.

"Well, what do you think, Hug Yuan Shouichi!"

Yun Yi noticed the abnormality of the Blood Spirit Princess, and hurriedly whispered, he used his divine thoughts to pass on the "Heavenly Thunder Refining Body Divine Light Technique" and the "Heavenly Dao Supreme Law Spiritual Skill" to the Blood Spirit Princess.

The Blood Spirit Princess was secretly shocked in her heart, she could feel the magic of the exercises passed on by Yun Yi, and she was a little embarrassed for a while.

Yun Yi used the spiritual power to run in the body of the Blood Spirit Princess for a few more days, completely dissolving the spiritual skills cultivated by the Blood Spirit Princess, and then letting her cultivate the "Supreme Law of the Great Dao of the Heavens" by herself.

"The blood family has been of great help to me, and I can't repay it.

Today, I will pass on Dafa to you, and in the future you will be the master of the blood family, and you can protect the blood family's wishes. ”

Yun Yi used his divine thoughts to pass these words to Blood Ling'er again, and then he stood up and came to another stone bed to sit down and cultivate alone.

Unable to feel the passage of time in the cave, Blood Ling'er worked hard to cultivate, and soon turned the spiritual power cultivated in his body into a mana that could be used as the "Supreme Law of the Great Dao of the Heavens", and cultivated this technique to the second-level realm.

Yun Yi saw that the spirit gourd was still unchanged, so he came behind Blood Ling'er again, pressed his hand on her back, and activated the spiritual power in her body, and the immortal thunder was activated, and she began to refine the Blood Spirit Princess.

Where did the Blood Spirit Princess think that Yun Yi would let her refine her body so quickly, and after a muffled snort, all the clothes on her body disappeared, and then the flesh and blood composed of the underworld power in her whole body were also scattered, leaving only the skeleton of the underworld power.

"Alas, this matter is very painful, but if you don't do this, you can't stay in the sun for a long time, the rules of heaven and earth have not changed, and you still have to go through this experience!"

Yun Yi said with a sigh. he

Using the power of the underworld to keep the true spirit of the Blood Spirit Princess immortal, and then starting to use the Dark Thunder to continuously refine the bones of the Blood Spirit Princess, this is the only way to make the Blood Spirit Princess turn from yin to yang.

A long time passed, and the bones of the Blood Spirit Princess's whole body were solidified, and Yun Yi converted her similar force and began to refine it with Yang Thunder.

After refining like this many times, the bones of the Blood Spirit Princess finally had the two attributes of the Dark and Yang.

Yun Yi let go of her true spirit protection, and the true spirit of the Blood Spirit Princess began to recover, and gradually began to regain her senses.

"Ling'er, bear it, this matter is too bitter!

If you can overcome this difficulty, you will have a yang body from now on, and you can walk in the underworld and the yang world without hindrance, I will always take care of you, and you must survive it!"

Yun Yi hugged the Blood Spirit Princess and began to help her resist the yin and yang changes in her body.

After Princess Blood Spirit's sanity recovered, flesh and blood began to appear on the bones of her body, and various organs began to grow, which was really unbearable, making her sad to die and live.

A few days later, the Blood Spirit Princess finally survived, and her flesh and blood grew well, and she was no longer a gloomy underworld.

"Childe's great kindness, Ling'er doesn't know how to repay it, Ling'er is willing to serve Childe forever. ”

The Blood Spirit Princess hugged Yun Yi's neck, and her two eyes that had changed color looked at Yun Yi warmly.

"Hehe, you will be my concubine in the future, and this can be regarded as an explanation from me to the blood family. ”

Yun Yi was also happy in his heart, his guess was indeed correct, and the underworld could also practice his Dafa and become a person who could exist in both worlds.

Alas!

It's a pity that this method can't be popularized, and there is really nothing to do.

Yun Yi laid the Blood Spirit Princess flat on the stone bed, and asked her to continue to cultivate the Thunder Refining Technique to stabilize the body that had just been generated.

"Ling'er, you are a sister, you have to carefully understand the quality of this method, if everything is okay, Yue'er will have to do this in the future, otherwise you will not be able to go to the yang world, this matter must not be careless. ”

Yun Yi told the Blood Spirit Princess again.

"Childe, rest assured, the slave and maid will definitely experience it carefully, and there will be no drawbacks. ”

The Blood Spirit Princess said softly, then closed her eyes and began to cultivate again.

Yun Yi turned around and looked at Linghu on the other stone bed, a little speechless.

How long has it been, this spirit gourd is still like this, when will it be finished refining?