In the crimson valley, rows of stone chambers are lined up on both sides of the valley like steps, and as far as the eye can see, the entire valley is crowded, and it is estimated that there are thousands of stone chambers.

Lin Shu walked into the valley and could clearly feel that the temperature here was much hotter than other places.

It is this place that has fireworks that can improve the purity of people's blood, and is called Yangu by the people.

At this time, the Yan Valley was already very lively, with people coming and going, and from time to time there were people coming from outside, most of them were members of the first-order academy, because each person in the first-order could receive three hours of tempering time for free.

As the first day of the opening of Yangu, the clansmen couldn't wait to improve their strength, so the academy deliberately took a few days off for the students to come here to cultivate.

Even in the next few days, there will be people who will rush back to the clan from the outside world one after another to come to Yangu to refine their bloodline.

At this time, there was a faint light outside many stone buildings, which was someone cultivating in them.

Lin Shu approached an empty gray-white stone room, took out his identity token, and scratched it on a wall of light at the door.

"Boom!"

The heavy rough stone door slowly moved open, and Lin Shu did not hesitate and paced in.

The stone chamber is an enclosed space with a dark view, in which there are only a few faint clusters of firelight, illuminating the stone chamber in a dark red.

When Lin Shu walked into the stone room, the stone door closed automatically.

The stone chamber is empty, except for a stone platform and a stone recess in the center.

Lin Shu sat on the stone platform, his eyes were hot, a little excited, the refining effect of this firework was excellent, even when his bloodline was stagnant, after the tempering of this special firework, he could feel the improvement of the power of his bloodline.

What's more, his current self, after several years of stagnation in his cultivation, his cultivation speed is like a torrent that bursts the embankment, and it is amazingly fast.

Now that the power of his bloodline has reached the peak of the first order, this time he wants to break through to the second order bloodline!

Thinking of this, Lin Shu inserted the identity token into the stone groove.

Airplanes!

A cluster of fireworks suddenly burst out from under the stone platform where Lin Shu was sitting, and the fireworks were as black as ink, overflowing with an aura like an abyss.

The scorching fireworks exuded a terrifying high temperature, slowly rising up, enveloping Lin Shu, and as soon as the pitch-black fireworks touched Lin Shu's skin, they burrowed into Lin Shu's body.

Boom! Boom!

Lin Shu was instantly shocked by an electric shock, his body trembled violently, and the extreme pain spread throughout his body.

Tearing sensation!

Every muscle, every bone, every cell is being torn apart.

"Ahh

Lin Shu couldn't help but roar, and the sharp pain felt as if he had been cut by thousands of knives.

A sense of powerlessness permeated the whole body, and Lin Shu's body continued to break out in cold sweat, but it was instantly dried up.

In just a few minutes, Lin Shu felt like years had passed.

Not to mention three hours of tempering time, it is three minutes, all of which are counted second by second.

However, while the pain was severe, the benefits were also obvious, and scarlet blood was constantly being discharged from Lin Shu's body.

This is refining the bloodline and replacing the waste blood!

It can be said that the effect is amazing!

The ink-black fireworks were as thick as pulp, constantly emerging from the stone platform, and the black flames that came out every second were increasing.

"I'm going to break through the second order!" Lin Shu clenched his fists, his eyes revealing determination.

According to the legend within the clan, as long as your will is firm enough, three hours of tempering can reach the normal tempering time of half a year.

This is not just a rumor, in these three hours, the black flames that come out further will continue to increase, and the refining effect will continue to increase.

It is said that if a person can continue to hold on for three hours, he will be able to completely complete a bloodline transformation, remove the waste blood, and advance to a stronger and older bloodline power.

Otherwise, the scorching tempering of the volcanic leylines would not be valued by the clansmen.

"Ahh

Lin Shu roared, and at this moment, the pulp-like ghost flame completely covered Lin Shu's head, and wisps of mercury-like ghost flame seeped into his skull.

The violent tearing sensation spread in the depths of his soul, and Lin Shu was instantly confused, and his body trembled.

At the last moment, Lin Shu bit the tip of his tongue violently, sobering himself up a little, his slightly closed eyes flashed with determination, if he fainted, the tempering would stop, and everything would be wasted, and he would have to start all over again.

While the dark and deep fireworks tore apart the soul, the feeling of weakness and powerlessness continued to invade Lin Shu's will, and this sense of weakness was the most abrasive.

But because of the continuous tempering, Lin Shu's soul has become more condensed, and his spiritual power is slowly increasing.

There was constantly jet-black scarlet blood discharged from Lin Shu's body, and a sense of weakness invaded his will, and the vitality absorbed before this time played a role, and the majestic blood qi was constantly supplied, supporting Lin Shu's tempering.

When the time exceeded ten minutes, Lin Shu could no longer support it, and the sound of the flesh falling and hitting the ground sounded.

The flame as thick as mercury faded like a tide.

Lin Shu's face turned pale, he gasped heavily, his body trembled, and the feeling of weakness and weakness continued to spread. Even if the tempering was stopped, there was still a feeling of palpitations, and the pain seemed to continue.

Ten minutes, ten minutes!

There was excitement in Lin Shu's tired eyes, and it could be said that he had made a lot of progress compared to last year.

Ten minutes is a threshold, and when the tenth minute passes, the tempering effect will also increase to another level, and the pain will reach a peak.

In the past, Lin Shudu only lasted a few minutes, but this time it can be said that there has been a breakthrough. He could feel his blood boiling and his vitality surging.

The feeling of weakness and powerlessness struck, and it took a few hours for Lin Shu to recover his strength, and after replenishing some flesh and blood power, Lin Shu took a deep breath, his heart was ruthless, he hammered the stone platform, sat up, and began to temper again.

The viscous and pulpy flames came out from under the stone platform again, and the pitch-black fireworks were like the Nine Shadows of the Netherland, with no sense of light, and the black was terrifying.

Ahh

The tearing sensation came again, and Lin Shu screamed in pain.

The pain of his soul being torn apart made Lin Shu's spirit about to collapse, but when his spiritual power was about to completely collapse, his will exploded, and his unyielding obsession made the collapsed spiritual power much more stable.

In this way, Lin Shu's spiritual power was stalemate in continuous collapse and stability, until Lin Shu could no longer support it.

This time, Lin Shu lasted for twelve minutes!

Then he fell into a long period of weakness, his body trembled uncontrollably, and this time, it took Lin Shu longer to recover.

...

Lin Shu tempered it again for thirteen minutes before he fell.

...

Fifteen points!

...

It wasn't until Lin Shu's total time of refining exceeded an hour that he reached a limit and could no longer hold on and fainted.

The tempering of special flames can stimulate potential, improve the purity of blood, break the shackles, and release the power within.

But on the other hand, it also consumes the essence of the body extremely.

Under normal circumstances, the time of refining for an hour a day is a limit, and Lin Shu can exceed an hour, which can be regarded as because of the credit for absorbing the vitality of the body.

I don't know how long it took, Lin Shu slowly woke up.

After waking up, he found that he had already touched the barrier of the first order of the bloodline, and as long as he could break through the barrier, he would be able to enter the second order.

It's just that because of the bloodline, his realm barrier seems to be more solid.

But Lin Shu is confident and is not far from a breakthrough.