As Du Yu began to refine that drop of blood, the whole hall was quiet.

But soon a dull and painful roar came out of Du Yu's mouth.

"Ah Ho ho... "

Du Yu, who was sitting on his knees, suddenly opened his eyes. His whole face turned bloody red and his face was ferocious.

His whole body now began to emit white gas, just like steam.

The blood vessels were protruding, almost leaving his body.

Visible to the naked eye, the blood in the blood vessels is boiling and burning, which is a very terrible scene.

Own blood burns in blood vessel, how is this painful?

Du Yu didn't know before, but now he knows.

This kind of pain is not the most painful feeling in the world, but it is absolutely the same.

"It's so painful to refine the true spirit blood." Although it was time for Du Yu to prepare for the blood refining, he was not ready for the big pain.

His blood is really burning, as if that drop of real blood completely activated the power of his blood!

His feelings were very clear, and the blood began to condense in the process of continuous combustion.

It seems that the blood in their own discharge of impurities, leaving all the purest blood.

Du Yu knew that this was the normal reaction of refining Zhenling's blood, but the pain was really hard.

The process of removing impurities is painful, especially in the blood.

Then he knew that the true spirit blood was overbearing, and he was not allowed to leave a trace of other impurities in the blood in his body.

If you want to get rid of other impurities in the blood, you can only completely burn those impurities through the continuous combustion of his own blood.

This process is extremely painful, but Du Yu soon realized the benefits.

With the constant burning of blood and the elimination of impurities, he can feel his own blood, or to be exact, the strength of his blood has become more powerful.

This is just his feeling, but the most intuitive feeling is that his blood color was originally just light golden yellow, or mainly blood red, but with the continuous discharge of impurities, now the color of his blood has begun to gradually change to rich golden yellow.

From the previous pale gold gradually deepened.

This shows that after refining the true spirit blood this time, he really played a very big change and promotion.

In the process of discharging impurities and burning, the blood starts from some small meridians, and then the main blood vessels. This process is gradual, and Du Yu discovered it after enduring for a long time.

When the process lasted for two days, a sharp stabbing pain broke out in his chest.

Du Yu knew that it was the last time to refine the true spirit blood. Now, in addition to the blood in his heart and brain, he didn't burn and discharge impurities. After two days, the blood in other parts of his body had completely become a rich golden color.

Now it was time for his blood to start burning.

"Damn it, don't let anything happen." Feeling the blood burning in his heart, Du Yu prayed in his heart, and his heart was one of the most important parts of a person.

Although to his cultivation, even if the heart is gone, he can rely on the powerful natural resources to recover again.

But it's not as good as the original one!

And if the reborn heart is still unable to bear the burning of blood, then he has to continue to bear the process of rebirth, which is also very painful.

A little bit of time in the past, although the chest pain. But Du Yu with a strong willpower or gritted his teeth to insist on down, and he can feel his heart blood has almost completed this time of tempering.

Finally, on the eighth day when he began to refine the true spirit blood, the blood of that part of his heart blood completely eliminated all impurities!

"Lying trough It's not like being alive. " After his heart and blood were burned, Du Yu fell to the ground. In the past seven or eight days, his life was really worse than death. This kind of pain was ten thousand times worse than death.

And one of them. Almost can't bear the pain, just a little bit, let the heart blood refining failure.

Fortunately, at the last moment, he forced his teeth to hold back.

But at the moment Du Yu's condition is still very bad.

At this moment, his clothes were soaked with sweat, which made him very uncomfortable.

Hum, but what's more, the blood in his brain hasn't started to burn at this moment. This is the person Du Yu is most worried about. Besides his heart, the most important thing is to know the sea!

Knowing the sea is in your head.

It can be said that for monks, the head is more important than the heart!

After all, the soul is in the mind.The process of burning blood to remove impurities is very painful. The whole blood in the brain has not yet started to burn, which makes Du Yu feel worried. He doesn't know whether he can stand it or not. This is a complete blood exchange process.

"No matter. Let's go out first. These seven or eight days since the exchange of blood. My hunger is becoming more and more serious day by day. Now it seems that the blood in my brain has been temporarily confined by a strong force. Obviously, this should be a process of recovery and buffering for myself. Go out to fill my stomach first. " Du Yu shook his head, did not think about those terrible extreme things, but a flash left the real spirit palace, he was going out to eat.

The blood in other parts of his body after this exchange transfusion really made him feel terrible hunger.

You, in fact, as early as two days ago, he had some can't help it. He was about to faint, but he just finished the exchange of blood!

Now it is obvious that the blood in the brain will continue to exchange after a process, so Du Yu wants to take advantage of this time to go out and get some food to make up for the lack of nutrition in his body.

Although it doesn't matter for the friars of their level not to eat, it's obviously different after this exchange transfusion. They need the nutrients contained in the food to make up for the deficiency of his body.

"Mr. Chai, I need to eat a lot of food, preferably meat." When he got outside, Du Yu immediately began to sound to master Chai.

"Food?" Chai Zun was stunned. Then he saw that Du Yu was in a very bad state. He was thinner than before for a whole circle. Then he turned and walked out without saying a word!

"Wait a moment, young master. I'll hunt some monsters for you and come to roast meat."