The secret art of refining blood was one of the earliest exercises that Tong Yu practiced, and after receiving guidance from the blood hair in the blood prison, the energy spent on it was no less than that of the Five Thunder Righteous Method.

With that drop of blood marrow, providing an endless stream of pure qi and blood, he has never been short of qi and blood because of cultivation.

Even so, it took nearly five months of cultivation to reach the first layer.

It can be seen that refining the secret art of forming is much more difficult than refining the qigong method.

At this time, the qi and blood in Tong Yu's body, because he had cultivated the first layer of the blood refining secret technique, had gathered and condensed on his own, causing the blood in his body to suddenly decrease a lot, making him look pale as if he had lost too much blood.

With the supply of qi and blood released from the marrow of the heart, his face slowly became a little more flushed, and the qi and blood were recovering.

Secretly running the secret technique of blood refining, Tong Yu stretched out the middle finger of his right hand, and a little blood light appeared on the fingertips.

Subsequently, the blood light gradually condensed, compressed, and finally turned into a half-finger-long blood needle.

"The blood clotting needle is beginning to take shape. ”

Although this blood clotting needle is still thicker than a normal embroidery needle, and it is not completely condensed from blood light, it is already much stronger than before.

This seemingly inconspicuous blood clotting needle penetrated into the body of an ordinary Yuan Refining Realm cultivator, and it was enough to severely injure or even directly kill the other party.

Vitality condensation is also useless, it is aimed at the blood in your body.

Dissipating the blood clotting needle on his fingertips, Tong Yu slowly stretched out his palm again.

The palm of his hand, which was originally of a normal complexion, quickly turned red like blood, and then there was an invisible blood-colored flame beating on his palm.

"Burning Blood Palm!"

This is also a technique taught to him by the blood hair person, this exercise is diametrically opposed to the blood clotting needle, the person who is hit by this palm, the blood boils all over the body, and the blood boils.

The Blood Burning Palm doesn't even have to really hit the other party, it can attract the blood in the opponent's body in the air, which is extremely domineering and vicious.

Therefore, this technique needs to be cultivated at the first level of the Blood Refining Secret Technique before it can be used.

Although the secret technique of blood refining and these two exercises could not be easily performed, Tong Yu was still in a good mood, and he took another small step on the road to the Infinite Dao Foundation.

The little girl had disappeared, and there was no way out of the cave except for a few streams of water.

Tong Yu didn't take the liberty of going up and down the water again, he was going to wait for the little girl to come back again.

Looking at the deep pool rippling on the surface of the water, Tong Yu frowned.

There is a treasure at the bottom of the pool, and he believes that the little girl will not lie to him, but this treasure is definitely not something he can get his hands on now.

He had already experienced the power of the underwater whirlpool, and Tong Yu guessed that it was probably related to the treasure below.

He didn't think much about the underwater treasures, and carved the blood rune array with his own blood, sacrificing the blood demon, because of the difference in blood, the effect this time was obviously much better than before.

"Hey, the vitality is really a lot more condensed than before. ”

Tong Yu was very surprised, in the whirlpool, the vitality in his body was out of control, but it did not cause any serious consequences.

On the contrary, after the injury was healed, the irascible thunder and lightning vitality was a little purer than before.

The thunder and lightning were already violent, and the Yuan Qi cultivated by the Five Thunder Righteous Method was even more difficult to condense, so the change was obvious, which surprised him.

"Could it be that it has something to do with the underwater whirlpool?"

Tong Yu secretly guessed in his heart, but he was panicked at that time, and he didn't pay close attention to the changes in the vitality in his body at all.

Then, he turned on the copper body of Chiyuan, and a faint cyan metallic luster appeared on his skin, which was bronze.

The fruit of the green sycamore tree helped him break through the bottleneck, and the blood crystal copper heart and dragon blood fruit made a lot of progress in the cultivation of the red yuan copper body.

Entering the Bronze Realm, his physical body was already not afraid of the attacks of ordinary Refining Yuan Realm cultivators, even if it was the Lock Yuan Realm, unless it was a critical position, it would not cause fatal damage to him.

For three days in a row, Tong Yu quietly cultivated alone in the cave, stabilized the secret art of blood refining after the breakthrough, cultivated the red yuan bronze body, refined the five thunder vitality, and comprehended the seven nights of the green dragon.

On this day, when he opened his eyes after cultivating, the little girl appeared again with the mini green dragon.

In the little girl's hand, there was also a sky-blue crystal fruit.

"Here you go. ”

Taking the fruit thrown by the little girl, looking at her big eyes in anticipation, Tong Yu smiled and said, "I want to go into the pool again, and when I encounter danger and enter the star map, let Xiaolong rescue me in time, and then let Xiaolong absorb the black mist, okay?"

The little girl thought for a moment before nodding vigorously and said, "I'll let Xiaolong go down with you." ”

After confirming with the little girl, Tong Yu prepared and entered the deep pool again, he wanted to confirm the guess in his heart.

Vortex, still a whirlpool.

With his previous experience, Tong Yu was more cautious and cautious, but the underwater whirlpool appeared without warning and regularity.

After he managed to avoid a few, he was still caught in it, and was carried by the whirlpool and fell into the water at a rapid pace.

In the water, the green dragon is completely unaffected by the whirlpool, and even if the whirlpool rolls it into it, it can get out freely.

This time, Tong Yu did not struggle desperately, but let the whirlpool roll him down, and he was fully understanding the changes in the whirlpool and the impact on him.

Soon he couldn't tell the difference between up and down, left and right, but fortunately, he could always see Qinglong's figure.

His body began to feel the pain from the whirlpool, and at the same time, the Five Thunder Vitality in his body began to move.

The force of the water in the whirlpool became stronger and stronger, the pain became more and more intense, and the vitality in his body also changed.

It seems that there is a strange power in the whirlpool that can make the vitality of those who fall into it lose control.

These out-of-control vitality were affected by the whirlpool, and they actually formed tiny whirlpools in Tong Yu's body on their own.

As soon as this situation appeared, he was discovered by Tong Yu, who had been paying attention, and he was extremely surprised.

In the meridians, in the dantian, the five thunder vitality that gradually went out of control formed small whirlpools, and it was the existence of these whirlpools that made the five thunder vitality compressed and condensed little by little.

These small whirlpools faintly formed a larger whirlpool in the dantian, and the five thunder vitality was swept into it, and it was quenched through the whirlpool, removing the truth and preserving the truth.

Even Tong Yu discovered that his blood was also affected by the whirlpool, but perhaps because of his cultivation of blood refining secret art, this effect was not very obvious.

"Heaven and earth are so big that there are no wonders. ”

Tong Yu secretly sighed, he didn't know if this was a natural formation in the waterhole, or if it was affected by the treasures below the waterhole and generated a strange situation.

But no matter which one it is, this place is a treasure place for refining Yuan Qi and preserving the truth for cultivators in the Yuan Realm.

Of course, only if you come up alive and if your physical body can withstand the tearing force of the whirlpool.

The whirlpool under the waterhole is not always rapidly descending, but changing all the time, but even so, the force in the whirlpool is getting stronger and stronger.

Feeling the pain of tearing through his flesh and the gradual loss of consciousness, Tong Yu knew that it was time for him to stop.

In the confusion, seeing that Qinglong was still shuttling in the whirlpool casually, Tong Yu's heart moved, and he returned to the secret map of the stars.

At this time, the first thing he checked was the change in the five thunder vitality in his body.

Losing the influence of the invisible power in the whirlpool, the five thunder vitality in his body gradually regained control.

At this time, the total amount of the Five Thunder Yuan Qi decreased a little, but the degree of condensation increased significantly, and it was more docile and easy to control.

"It's really effective!"

If he were allowed to cultivate normally, at this level, it would take at least ten days and half a month.

But now it was only in the whirlpool for a short period of time, and it was actually quickly condensed, Tong Yu was surprised in his heart.

"It seems that it is necessary for me to cultivate here for a while. ”

With this discovery, Tong Yu quickly made this decision in his heart.

After looking at the injuries in his body, it was timely to hide in the star map this time, so the injuries were not as serious as last time.

The cultivation and progress of the Chiyuan Bronze Body also allowed him to withstand stronger vortexes.

And this tearing of his body by the whirlpool was also of great help to the cultivation of the Chiyuan Bronze Body.

Anyway, he had those precious spirit fruits brought by the little girl, and the recovery from his injuries was not a problem.

After waiting for a while, I felt that it was almost over, and Tong Yu came out of the star map, and sure enough, he was already in the cave.

"Thank you, let Xiaolong come!"

Tong Yu saw that the little girl liked it even more at this time, and with the cooperation of her and the mini green dragon, her cultivation plan could go on more smoothly.

In this way, Tong Yu began to meditate and cultivate here.

The little girl came every three or five days, and Tong Yu was also able to heal her injuries and cultivate to control the five thunder vitality after condensation.

With the presence of the Thunder Source Liquid, as well as the huge vitality contained in those precious spirit fruits, Tong Yu's cultivation progressed extremely fast, and even he himself was a little frightened.

Nearly two months passed in a flash, Tong Yu stretched out his palm, and a three-foot-long knife that seemed to be completely formed by thunder and lightning took shape in his hand.

This is something that can only be done after the five thunder vitality in his body is highly condensed.

There is no arc at all on the thunder knife, and the vitality is condensed but not dispersed.

"It's time to leave. ”

Tong Yu sighed and looked at the waterhole reluctantly.

It's not that his vitality has been condensed to the limit, it's that his body can't withstand the tearing force of the whirlpool below.

Although the cultivation speed and progress of the Chiyuan Bronze Body were also extremely fast, after all, it was a form refining exercise, and it was still not as fast as the Five Thunder Orthodox Method of Qi refining.

"Take me out of here and go back to Lingyuan Mansion. ”

After this period of frequent contact with Tong Yu, the little girl is no longer so timid.

Tong Yu entered the Star Chart, still held by the green dragon, and after nearly two months, he returned to Xixin Peak again.

As soon as he opened the ban on the cave mansion, more than a dozen messengers flew over.

"Qi Shaozhen, let me be careful?"

"Let me take a break from the limelight?"

These are not only Qingxian, but also Rao Yinger and others who are familiar with him.

Before he could finish reading it thoroughly, the people outside his cave found out about his return.

"Senior Brother Tong, Senior Brother, I want to challenge you. ”