When the Luoying Root and Jianmu Bark in the Void Ding gradually began to turn into a golden liquid, they quickly separated and were civilized into two parts, one was the essence of Luoying Root, and the other was the essence of Jianmu Vene.

Duan Ling put the Triangle Fruit, Dead Wood Spring Flower, and Pregnant Spirit Grass into it one by one, and at the same time, the spiritual fire on the palm of his hand increased again, and the slag kept peeling off from it, and in the end, only the three drops of golden liquid after refining remained.

A total of five drops of essence slowly approached under the compression of Duan Ling's spiritual power. As soon as he touched it, a thick white smoke rose into the air, and all the essence that had been refined instantly turned from gold to black, and after falling to the bottom of the void ding, it became black powder.

Duan Ling stopped what he was doing, looked at the spirit grasses that had become powder in the ding, and knew that his simulation had ended in failure.

"Fortunately, I simulated it out of nothing, otherwise I would have lost one of my seven materials. Duan Ling let out a long sigh, if this precious spirit grass was not used to create something out of nothing, it really couldn't afford to waste it.

"As soon as it came into contact, it turned into powder, and it seems that the heat was not accurately controlled. Duan Ling thought about it, and simulated the spirit grass one by one, and put it into the void in turn, carefully controlling the heat in his hand.

There were still no problems with the fusion of Luo Yinggen and Jianmupi, and the refining of the other three spirit grasses was still successful, Duan Ling nervously watched as the golden liquid came into contact again, Duan Ling's head was sweating, even if it was an illusory spirit grass, it still made him a little nervous in his heart.

"Bang!"

Another burst of white smoke rose, and looking at the spirit grass that had once again turned into black powder, Duan Ling felt a fierce energy rise in his heart.

Time passed, Duan Ling didn't know how long it had been, and he didn't know how many times he had tried, only that he still kept repeating it again and again when he saw the countless white smoke rising.

After each failure, he paused, and then thought back to his methods step by step, constantly trying to change. He finally clearly realized how difficult it was for Duan Ming to succeed once in the twenty times, after all, Duan Ming was not like him who could use endless spirit grass out of nothing to create an endless number of times and try again that he couldn't even remember.

Again, Duan Ling carefully let the golden ones slowly touch. Finally, without the white smoke rising again, Duan Ling showed a rare smile.

He controlled the spiritual fire in his hand more carefully, and the golden liquid also began to slowly penetrate under the compression of spiritual power, when all the liquid has been compressed together, all he needs to do now is to make it solidify, as long as it solidifies, it means that the Tuofan Dan has been successfully refined.

At this time, in that golden liquid, the essences of various spirit herbs began to repel one after another, as if a little carelessness would cause all the essences to be separated again.

Duan Ling was engrossed in controlling the spiritual power and slowly compressing the golden liquid again, until the essence within it reached a state that made him feel that it was becoming balanced, and then he began to increase the spiritual fire to complete the final step—solidification.

"Bang!"

There was a sudden sound again, and I saw that the golden liquid in the void dome actually exploded directly in the process, and those essences also turned black again with the explosion.

Duan Ling was not discouraged, he only had one last step to succeed, he believed that as long as he kept trying, he would definitely be able to refine the Immortal Pill.

After trying again and again, in the end, his success rate when the essence was touched was seventy percent, but in the end, it was not a success, Duan Ling observed all the processes in the solidification more carefully, and every subtle step was firmly remembered in his mind.

"Impossible, no matter how I operate, I can't make the pill finally solidify, this is a mutually exclusive several spirit grass essences, it is impossible to succeed at all. Duan Ling stopped what he was doing, and recalled the process of failure over and over again.

"The power of heaven and earth!" Duan Ling suddenly remembered Duan Ming's teaching to him on refining the Immortal Pill.

"Others can refine the Immortal Pill, which proves that these kinds of spirit grass essences can definitely be fused, but how exactly are they fused? Is this what the second uncle said that we need to use the power of heaven and earth? But how should this power of heaven and earth be used?"

Duan Ling's eyes were red, and the movements in his hands rose again, and every link in the refining process had been calculated several times in his mind. In the process of repelling each other, he observed it very carefully. Gradually, every bit of fusion gradually seemed to be slowed down thousands of times in his eyes, and he could even see how those essences were slowly integrated into it, and how they were repulsed.

At this time, if anyone knew that Duan Ling could actually refine every step of the pill to the extreme, they would definitely be shocked, because this had already exceeded the limit that could be observed by the naked eye, and those who knew would call this realm - subtlety.

In these countless fusion observations, Duan Ling had already mastered this realm called subtlety. In this realm, he can see all the subtle or unnoticed processes more clearly.

"Huh?" After repeated observation and experimentation, Duan Ling finally discovered an extremely small detail, which even in the subtle realm made him fail to capture it several times.

When all the spirit grass essences were compressed together, there was a moment, an extremely short moment, they were actually fused with each other, and after the fusion, they were separated by a more rapid repulsion. That extremely short moment, in this alternation, was even faster to the extreme, if it weren't for the extreme care in the subtle realm, it would not have been possible to make Duan Ling pay attention to it at all.

"Could it be that this is the mysterious power of heaven and earth in the second uncle's mouth?" Seeing the golden liquid after rejection turn into black powder again, Duan Ling's eyes flashed with bright brilliance.

He threw the spirit grass into the tripod again, the spiritual fire in his hand ignited, all the steps became slow in his eyes, and all the golden liquid was slowly compressed. Duan Ling's eyes were combined, and the compression process of the golden liquid presented in his eyes became extremely slow.

He was waiting, waiting for that very brief moment to merge. The golden liquid was compressed together by his spiritual power, and suddenly, the extremely small bubble-like balls in those liquids began to devour each other.

"It's now!"

"Give me !!!"

Duan Ling's spiritual fire in his hand increased at the moment, and with the strong compression of the golden liquid by the spiritual power, the golden liquid quickly rotated in the void ding, faster and faster, and gradually became slow, Duan Ling withdrew all the spiritual power, only to see a virtual elixir floating in the void ding.

Although it was an illusory pill, the aura of the elixir was clearly emanating, and it was a vast aura with a trace of heaven and earth power.

"I finally know why the Tuofan Pill is so difficult to refine, even the second uncle can only succeed once in twenty, it is because they can't see the extreme moment of merging with each other, they can only judge by feeling. Originally, it was the essence of mutual exclusion, but for some reason there was a moment of integration, which was what he called the power of heaven and earth. ”

After understanding the rules, Duan Ling waved his right hand, and the Void Ding and the Void Defan Pill were instantly dispersed by him like white smoke. For the first time, a feeling of exhaustion appeared on his face, as if this refining had brought him more exhaustion than all the previous refining. Although his body was tired, the light in his eyes was unusually bright.

He was already confident that the success rate of refining the Extanti Pill by himself was definitely several times higher than Duan Ming's. It wasn't because his Dan Dao attainments were higher than Duan Ming's, but because he didn't need to rely on his senses to solidify the pill, he could see that he could coagulate the golden liquid into a pill at the most suitable time.

"Duan Ling, Duan Ling!" As soon as Duan Ling stopped, Chen Susha's voice was already heard outside the garden.

When the protection was opened, Chen Susha was seen anxiously pacing back and forth outside the park.

"What's the matter, Senior Sister?"

"You... You... What's wrong with you?" Chen Susha, who heard Duan Ling's words, originally wanted to question Duan Ling, but was completely lost by Duan Ling's current appearance. At this time, Duan Ling's hair was scattered, his eyes were red, and his face was even haggard.

"I—what's wrong with me?" Duan Ling looked at his whole body, but didn't find anything wrong.

"You've disappeared for more than a month, and if I can't find you again, I'll be gone. Chen Susha said with some complaints.

"More than a month?" Hearing this, Duan Ling was really taken aback, he and Chen Susha separated and returned to the medicine garden to refine the pill as if it happened yesterday, but he didn't expect that this refining would take more than a month.

"Where are you going?" Duan Ling asked in a bit of confusion.

"I don't know what you're doing for more than a month, the Spirit Pool is about to open, and the disciples of the eight veins in the sect will go to the Spirit Pool. ”

"Why is it so fast? Isn't it still a few months before the Spirit Transformation Pool will be opened?" Duan Ling still couldn't believe it when he heard the news, the Spirit Transformation Pool was opened, but his cultivation was still in the realm of opening the Seven Veins, how could he be calm?

"I don't know what the specific reason is, I heard from the master, there are about two months or so to open, we are starting from the Genting Sect now, and we will be able to rush to the Spirit Pool in two months. Chen Susha looked at Duan Ling, but she didn't know what to say to him? She originally thought that before the time when the Spirit Transformation Pool opened, Duan Ling would definitely be able to go to the Spirit Transformation Pool with her with her qualifications and hard work, but now that the Spirit Transformation Pool was about to open, Duan Ling's cultivation was still in the seventh vein, how could he follow him to the Spirit Transformation Pool to become mortal?

Duan Ling was silent, and then asked with a complicated mood, "When are you leaving?"

Chen Susha bit her lip, she could understand Duan Ling's mood, if possible, she also hoped that Duan Ling could get out of the world with her, but now that Duan Ling had cultivated to the Seven Veins, what was the use of going to the Spirit Transformation Pool?

"Tomorrow...," Chen Susha said in a low voice.

"Tomorrow..."Duan Ling's face turned even paler, and then he shook his head with a wry smile, maybe the Spirit Transformation Pool had nothing to do with him.

"Senior sister, go ahead, you must be out of the mortal in the spirit pool. Duan Ling smiled at Chen Susha, but that smile seemed so weak.