After a few hours passed, Xiang Yu, who had been sitting cross-legged in the cultivation room, looked slightly strange.

Distraught, Xiang Yu slowly opened his eyes, it has been so long, he still can't calm down, if his heart is not calm, even if he stimulates the jade seal Dao rhyme, it is not of much use.

It's just that when he thought of Xiang Wen's matter, Xiang Yu suddenly felt like a numb heart, and he couldn't calm down.

Xiang Yu was helpless, and suddenly thought that he could try to refine the pill first, because he hadn't touched the pill furnace for so long except for refining a few furnaces of pill in the cave that day. If you find something to do, you may be able to focus on yourself, and the materials for refining the elixir are all prepared in your storage bag, and now it seems that this is the time to increase your alchemy skills.

As soon as he thought of this, Xiang Yu thought of it and did it, and instantly began to move.

Sitting on the ground, Xiang Yu's heart moved, and a purple Dan furnace appeared in the cultivation room, which was left to Xiang Yu by Sheng Lingyun before leaving, because it was originally Sheng Lingyun's spare Dan furnace, so the grade was not low, it was called Ziyun Furnace, and it was the lower grade level of the Xuan level. According to Sheng Lingyun, this Dan furnace was enough for Xiang Yu to use for a long time, at least when he had not reached the realm of a Xuan-level low-grade alchemist, it was definitely more than enough to use it for alchemy.

Taking a deep breath, Xiang Yu immediately started the "Burning Flame Decision", and suddenly ignited a raging real fire in the palm of his hand, which was a flame born from the consumption of his own true qi, which belonged to the acquired fire.

However, although it is only an acquired fire, its power is still not to be underestimated, and the flame temperature is more than ten times higher than that used by ordinary people every day, but with Xiang Yu's current cultivation level of "Burning Flame Decision", it should only be able to decompose and purify the herbs below the yellow level.

"Glazed flowers, six-leaf clover, white ginseng, fishy vines, ......"

Xiang Yu took out a copy of the Dan Fang of the Rejuvenation Qi Pill and prepared to start refining.

In the first step, the herbs are broken down.

Recalling the various alchemy techniques in his mind, Xiang Yu began the first step, which was to infester the herbs into the Dan furnace one by one according to a fixed proportion, and decompose and refine their medicinal liquids.

Then, the second step is purification.

Although Sheng Lingyun and Xiang Yu said that the first three steps were very simple, they were relative to herself, in fact, it was only to the purification step, and Xiang Yu gradually felt a little difficult.

Ingesting the decomposed medicinal liquid into the Dan furnace one by one again, Xiang Yu needed to carefully control the intensity of the flame, and constantly incinerated the liquid medicine in it until its impurities were almost incinerated and drop by drop impurities also dripped onto the furnace wall in the process, thus evaporating and dissipating.

Some people may ask why the liquid cannot be purified directly when it is decomposed from the herb. Everyone really saw the same thing as the heroes, in fact, Xiang Yu also thought so, but when he told Sheng Lingyun what he thought, he was immediately scolded, saying that he had low eyes and high hands, and he wanted to stand up and run as soon as he learned to climb.

This is because the liquid medicine that has just been refined and decomposed needs to be condensed for a period of time, so that the impurities in it can be well removed when purifying. And if you want to omit these cumbersome steps, at least you have to be an alchemist above the ground level to do it, because the flame temperature and skills they use are enough to incinerate the impurities when they are decomposed, and their soul power strength and skillful techniques are not comparable to a fledgling kid like Xiang Yu.

"Whew!"

With a slight sigh of relief, Xiang Yu completed the purification steps steadily and accurately, and then, it was time for mutual integration, to fuse all the purified medicinal liquids together, and there could be no mistakes.

Some of these steps are very simple, just fusing all of the brain, while others are extremely difficult, because some elixirs need to be fused with each other according to the characteristics of various medicinal liquids, and then they can be fused with other medicinal liquids.

For example, the liquid of the glazed flower cannot be directly fused with the liquid of the fishy vine, and the liquid of the glazed flower and the liquid of the white ginseng need to be fused first, and then the new liquid can be fused with the fishy vine.

In the Dan furnace, the medicinal liquids of various herbs blended and condensed with each other under the influence of Xiang Yu's true qi, and every bit of fusion process was observed by Xiang Yu in his eyes, and there was no room for sloppiness.

Because once an accident occurs in the refining process, no matter how trivial the accident is, it may lead to failure, and the previous efforts are all lost and the whole game is lost, and the entire process of hard work is all in vain.

And novices, no matter how talented you are, can't avoid mistakes anyway, and no one can do it perfectly.

No, after Xiang Yu completed the fusion of the first few medicinal liquids, he was happy to integrate the last six-leaf herbal liquid, but unconsciously, he was a little too hasty, and all of a sudden the true qi was too violent, and the fused medicinal liquid did not react sufficiently, resulting in the loss of most of its medicinal properties, and the refining of this furnace pill failed.

Xiang Yu frowned slightly, he had failed now before he even reached the point of frying. And the fryer is actually not what Xiang Yu wants, just because if he blew up the oven himself, but he has finally reached the step of condensing the pill, because only when condensing the dan can the phenomenon of the fryer appear.

At this time, Xiang Yu had become extremely focused, and he once again took out a material for the Rejuvenation Qi Pill and began to refine it.

Xiang Yu quickly completed the steps he had just done, and in the blink of an eye, Xiang Yu had reached the step that he had failed just now, this time, he carefully fused the liquid medicine, walking on thin ice, so careful that he forgot everything.

After a pillar of incense, when Xiang Yu smelled a little aroma, he knew that the step of mutual integration had been successfully completed.

Then Xiang Yu "took advantage of the victory to pursue", and followed the feeling he found to start the last step, that is, Ning Dan!

As Sheng Lingyun said at the beginning, this step not only stumped countless people who wanted to become alchemists, and turned away nine out of ten alchemists, but also gave people who were already alchemists a headache, I don't know how many natural treasures have been wasted for this, and the probability of failure is amazing. It can be said that this step of Ning Dan is as difficult as climbing to the sky!

However, God still takes care of Xiang Yu. He used one of the four Ning Dan techniques he had learned to perform Ning Dan with one of the ones he felt most familiar with.

Holding his breath and concentrating, Xiang Yu immediately began to perform the third Ning Dan technique he learned in an orderly manner, although he was still a little nervous in his heart, but when he carried out the operation, it seemed that his mind was calm all of a sudden, and the whole set of techniques was like flowing water, without the slightest hurry, everything looked like a pleasing feeling.

Finally, after half an hour of refining, a strange Dan incense wafted out from the Dan furnace, Xiang Yu saw the fire, instantly put away his true fire, and then gently opened the lid of the Dan furnace, a burst of green smoke rose up, and the refreshing medicinal fragrance spread in the cultivation room.

"It's done!"

A smile appeared on Xiang Yu's face, it was almost the same as the first refining, and the two round pills were put into the pill bottle by Xiang Yu.

Next, Xiang Yu concocted the same method, constantly took out medicinal materials to refine, and was as meticulous as possible in every step, reducing the chance of mistakes, constantly accumulating alchemy experience, finding his own shortcomings, and correcting them.

Originally, he wanted to come to the cultivation room for retreat, but he suddenly started this alternative cultivation journey, because every time he refined two or three furnaces of pills, his true qi would be squandered, and at this time, he would absorb the energy of the fierce beast beast pill, replenish his true qi, and then devote himself to alchemy, and so on, but he didn't know that it was also very beneficial to martial arts cultivation.

And just like that, time began to fly by.