Walking out of the Jiuxuan auction field, Chu Ling crossed the wide street and found an inn to settle in.

In the room, Chu Ling took out the Dark Dragon Heart from the ring, and a slightly excited and nervous light flashed in his eyes.

"Let's hope it will work out. Although he had practiced many times before, this time he had to really complete the carving on the demon bones, and Chu Ling couldn't help but feel a little apprehensive in his heart. After all, once it fails, not only will this Dark Dragon Heart be wasted, but even the Demon Jiao Bone will be affected.

Sitting cross-legged, Chu Ling's heart moved, and the demon Jiao bone appeared in front of him. The palm of his hand slowly stroked his body, and Chu Ling's eyes flashed with a dazzling essence.

"Poof!"

Chu Ling's fingers pierced straight into the heart of the Dark Dragon. Immediately, a stream of pure spiritual power poured out along the center of his eyebrows, enveloping the heart of the Dark Dragon in it.

The majestic spiritual power is like a small whirlwind, but there is not the slightest sound and fluctuation that overflows between the turns. Obviously, Chu Ling now has become more proficient in the control of spiritual power.

As the spiritual wind continued to rotate, the heart of the Dark Dragon also began to shatter and collapse little by little, and finally only a ball of black blood remained, wrapped around Chu Ling's fingers.

Chu Ling's complexion became extremely solemn at this moment, and his fingers fell towards the demon Jiao bone in front of him little by little. Finally, a ruthless color flashed in his eyes, and his fingertips fell!

"Whew!"

A strange sound sounded, and the demon Jiao bones trembled violently suddenly, and Chu Ling's other palm firmly held it, and the fingers stained with the essence blood of the heart of the dark dragon kept slashing over its body like lightning.

At the same time, Chu Ling's spiritual power was also turned into thousands of threads, shrouding the demon bones, carefully observing any fluctuations and changes in them. This is an extremely complex process, and there can be no room for error. Only people with strong spiritual power can achieve such nuanced control.

As Chu Ling's fingers swiped, the trembling of the demon Jiao bone became more intense, and its color also began to change significantly.

A trace of black silk-like lines seeped out from the inside of the demon bone, and faintly, its body seemed to become more slender. A fierce edge that even Chu Ling was a little moved quietly spread out.

The ferocity of the demon Jiao bone itself made it impossible to retain the Xuan Pattern of the vessel below the fourth grade at all, so Chu Ling had to use the stacking method to raise the grade of the Tianlin Jiao Pattern to the fourth grade in one breath before he could stop.

So this engraving of his lasted for a full day**.

During this period, Chu Ling did not have a moment of rest at all. Cultivation has reached the point where he is now, not to mention one day, even ten days and ten nights are nothing. However, that terrifying consumption of spiritual power made his eyeballs bloodshot, and there was a thick look of exhaustion in his eyes. However, if you look closely, the current Chu Ling seems to have entered a mysterious and indescribable mysterious state.

In the sea of his knowledge, that spiritual seedling actually began to grow little by little. And this sign is clearly a phenomenon of his spiritual power being promoted again.

After cultivating the Saint Yuan Heart Code of the Xuanxin Heavenly Maiden Clan, Chu Ling's spiritual realm was far faster than anyone else's. But in the same way, it is also destined that he has no chance to turn back.

When a bright moon hung high in the air again, Chu Ling's fingers swept the last stroke on his body. At that moment, a powerful violent fluctuation swept out of the demon bones like a storm uncontrollably. And at this moment, Chu Ling was powerless to stop it.

This kind of violent fluctuation is full of extremely powerful and destructive power. Once it erupts, let's talk about this room, I'm afraid the entire inn will be destroyed.

However, at this moment, next door to Chu Ling's room, Qin Yu'er Yu waved her hand repeatedly, and a dark light suddenly flashed out of her body. That kind of light instantly covered Chu Ling's room.

The ghostly light flickered, and the terrifying fluctuations that erupted from the demon Jiao's bones were directly swallowed by it.

"Ahh

A low voice sounded from Qin Yu'er's mouth, her delicate pretty face suddenly changed, and her delicate body trembled fiercely.

"What the hell is this guy doing? He made such a big commotion?" Qin Yu'er frowned, and a blood force swept out of her body, dissolving the terrifying fluctuating power.

Fortunately, at this time, the demon Jiao bone also quieted down, and the terrifying ferocious fluctuations slowly dissipated.

"Thank you. Chu Ling also raised his hand to wipe the cold sweat oozing from his forehead, if Qin Yu'er hadn't made a timely move this time, I am afraid that he would have to make a big move.

"Humph!"

A dissatisfied snort came from next door, which made Chu Ling smile helplessly, and then his gaze fell on the demon Jiao bone in front of him.

An unconcealable look of excitement emerged from Chu Ling's eyes.

At this moment, the quality of the Demon Jiao Bone had been shocked to the level of a low-grade spirit treasure! It was a whole grade higher than the quality of the top-grade spirit weapon he had expected before!

And the reason for this situation was because Chu Ling had directly superimposed the Heavenly Lin Jiao pattern sixty-four times in one breath before!

According to the original plan, Chu Ling was only preparing to superimpose eight times. But before, he suddenly uncontrollably entered an incomparably mysterious state, in that state, Chu Ling was completely involuntarily carved and superimposed. And why he entered that state, Chu Ling himself didn't know.

"Huh?"

Chu Ling's expression suddenly moved, and he immediately stood up directly, with an unbelievable shock in his eyes.

"My Spiritual Realm ........"

Chu Ling's face was sluggish, and now his spiritual realm, although he had not broken through to the third-grade intermediate level, it was a big step higher than before.

"How so?"

Chu Ling didn't know that the real effect of the stacking method was actually used to temper spiritual power. Layer by layer, step by step, steady improvement, and Shengyuan Heart Code complement each other. In the Xuanxin Heavenly Maiden clan, the Stacking Pattern Method, like the Saint Yuan Heart Codex, is the supreme holy text that only the core clan of the descendant can cultivate.

And the state that Chu Ling had just entered was actually equivalent to the so-called epiphany in the martial arts. It was precisely because of this that he was able to stack sixty-four times in one breath. Of course, this state is hard to come by, and it is not something that you can enter if you want to. And if it weren't for the fluctuations that erupted after the Demon Jiao Bone was promoted to the quality of the Spirit Treasure and woke Chu Ling, he had a great chance of taking this opportunity to break through to the third-grade intermediate level.