Gradually, there were more plants and trees around, and thorn plants accounted for the majority.

Although Yu Chengfeng walked on foot with the clouds, he still had to pay attention to the thorns on the road.

After walking for about half an hour, I finally heard the sound of an unknown bird. The surrounding bushes can be several people tall, which makes it difficult for Yu to ride the wind forward.

Frowning slightly, after looking around, Yu Chengfeng jumped on a big tree and stood on the big tree and looked into the distance to see if he could find a water source.

As far as the eye can see, there is still a patch of weeds and trees, and no water source has been found in the surrounding area.

Yu Chengfeng shook his head helplessly, sighed slightly, and his figure flashed, and his foot lightly touched the leaves, and his body jumped towards another big tree like a dandelion.

The arc drawn in the air stretched Yu Chengfeng's ghostly figure. I saw him constantly jumping from the tree, and after a while, he was far away.

I jumped a few miles above the tree again, and finally heard the sound of running water not far ahead.

Yu Chengfeng's spirit was stunned, and he kicked violently under his feet, and his body flew out like an arrow off the string, and a psychedelic figure also drew out behind him.

After landing lightly, there is a small stream less than a foot wide in front of you, and the water of the stream is galloping, and layers of mist are slowly rising.

When he came to the stream, Yu Chengfeng first washed his face with the stream in his hand. The stream water is like a hot spring, neither lukewarm nor hot, and it is very comfortable to splash on the face.

With a long sigh of relief, Yu Chengfeng stood up and swept in all directions, then shook his head helplessly and muttered to himself

"There is no one in this barren mountain and wilderness. ”

Immediately, Yu Chengfeng took off the clothes on his body one by one. After taking it off, Yu Chengfeng, who was naked, couldn't help but stare at his crotch, and couldn't help but muttered to himself again

"This little Dingding, it doesn't matter if others see it. ”

I haven't taken a bath for nearly seven days, and there is a hot spring here at the moment, which makes Yu Chengfeng a little excited. When he came to a place in the creek where the water flow was still gentle, a fierce man plunged into it.

'Poof', Yu Chengfeng's petite body got into the water, and after a while, he saw a small head popping out of the water.

After taking a long breath, Yu Chengfeng swam back and forth on the relatively gentle water, and after leaning against the stream to wash his body, he recalled how to extract clean water into dust-free water as described in the "Elementary Alchemy Collection".

After pondering for a while, Yu Chengfeng's eyebrows furrowed slightly, and he took a stream of spiritual power into the water, first trying to use the spiritual power to hold up some of the clear water, and then refining it into dust-free water.

But after trying a few times, this spiritual power lifted up some of the clear water, and it was a 'bang', and all of it fell on the surface of the stream again.

After several more realities, Yu Chengfeng still failed to hold up the clear water with spiritual power. This caused him to lean against the stream with a headache, and his brows furrowed and furrowed.

After a long time, Yu Chengfeng got up, jumped onto the shore, and while pondering, he washed his clothes and hung them on the tree, and then sat back in the stream.

In order to refine clean water into dust-free water, it is not only necessary to be able to control a part of the clear water to float in the air, but also to accurately repel the dust in the water through guò spiritual power, so as to refine the clean water into dust-free water.

Thinking of this kind of step, Yu Chengfeng couldn't help but feel big, not to mention whether he could use spiritual power to wrap the clear water, just the dust in the clear water alone could not be seen clearly by the naked eye, not to mention that he had to refine it all.

After taking a long breath, Yu Chengfeng slowly closed his eyes, trying to calm his heart, and at the same time transported a stream of spiritual power into the water, using his spiritual power to feel the changes in the water flow

This spiritual power is like a cheerful fish, swimming in the warm water. Although this spiritual power can be easily integrated into the stream, it is still because the surrounding water flow is too rapid, so that Yu Chengfeng briefly felt the precipitation in this water flow, and then lost contact with it.

Just sat by the stream, a few hours passed, Yu Chengfeng's eyes were still closed, although he was motionless, Yu Chengfeng used a wave of consciousness to drill into the spiritual power.

After a while, Yu Chengfeng only felt that he seemed to be in the spiritual power frolicking in this clear water, and then the spiritual power suddenly formed a round ball and slowly surfaced

And the ball made of this spiritual power is full of clear water. The water in this ball is only about a cubic meter, and it covers the entire ball, and at first glance, it looks like a water ball made of clear water.

Consciousness is integrated with this water ball, but Yu Chengfeng's mind is closely connected to the clear water in this spiritual power water balloon at this moment.

When he was able to control some of the clear water with his spiritual power, Yu Chengfeng felt any impurities in the clear water.

According to the "Primary Alchemy Collection", if all the impurities in the clear water are refined, the clear water will be mixed with spiritual power and become milky white, and this milky white water is dust-free water.

Just like that, a water balloon appeared in front of Yu Chengfeng with his eyes closed for a long time, for a long time, and there was still no movement

Although Yu Chengfeng could feel some of the dust in the water balloon, he didn't know how to refine it. As mentioned in the "Elementary Alchemy Collection", it is to use the spirit to control the spiritual power that envelops the clear water and expel the dust in the clear water. But most of the dust in the water cannot be seen with the naked eye alone, let alone refine them one by one.

In this way, after a few more hours, Yu Chengfeng and the water balloon were still motionless

The sun sets in the west and rises in the east, and the water balloon suspended in the air and the wind seem to freeze frame

It wasn't until noon on the third day that the water balloon changed, and a black impurity was constantly formed in the transparent water balloon, slowly fluctuating towards the outside of the water balloon.

When this black impurity is expelled to the periphery of the water balloon, it turns into a puff of black gas and dissipates into the air

After half a quarter of an hour, I saw that there were no black impurities in the clear water, and the clear water gradually turned milky white with the flow of spiritual power.

After a few days of trying, Yu Chengfeng was finally able to concentrate and use his spiritual power to remove the dust from the clear water. In order to remove the dust from the clear water, awareness, mood, spirit, spiritual power, and carefulness are all indispensable.

Consciousness can feel all the dust in the clear water.

The state of mind can keep the mind from being chaotic, and if the mind is chaotic, the dust is so small, how can it be accurately eliminated?

The spirit is the spiritual power, which excludes the dust from the clear water one by one.

Spiritual power plays a vital role in removing dust from clear water, and through guò subtle control, spiritual power can accurately find the dust in clear water, so as to remove the dust.

Carefulness is the most important thing in the whole process, and once distracted, the previous preparations will be in vain.

Alchemy, it can be said that compared to the immortal method, I don't know how many times more difficult, just say that refining this dust-free water, all kinds of contributing factors are indispensable, if it is not for Yu Chengfeng's thoughts, mood and other aspects are too ordinary, I am afraid that in today's realm, even if it is refined for ten years, a hundred years will not be able to refine dust-free water.

After slowly opening his eyes, Yu Chengfeng held the successfully refined dust-free water ball in the palm of his hand, and the dust-free water ball also rippled with the spiritual power that Yu Chengfeng had

At this time, Yu Chengfeng almost forgot the time, and he didn't know how long it took for this less than cubic meter of dust-free water to be successfully refined.

After flashing his big eyes and looking at the dust-free water floating in his palm, Yu Chengfeng opened his mouth and took a sharp breath, and the dust-free water balls poured into his mouth with Yu Chengfeng's inhalation.

Dust-free water enters the mouth, but it has no taste, and it is the same as ordinary water.

After pursing his mouth, Yu Chengfeng frowned slightly and muttered to himself

"There's nothing special about this dust-free water—"

After understanding how to refine dust-free water, Yu Chengfeng began to use spiritual power again to refine dust-free water again. This time, it only took a few hours, and a dust-free water ball appeared in front of him again.

After refining dust-free water several times, the time for successful refining is gradually shortened, and finally in less than half an hour, about one cubic meter of dust-free water can be refined.

At this time, Yu Chengfeng's heart blossomed, and after sprinkling all the refined dust-free water into the stream, he stood up, jumped onto the shore, put on his clothes, and ran towards Danshan

When he came to Danshan, Yu Chengfeng walked directly into the Dan room and poured out all the pills in the big white gourd containing the Qi Gathering Pill.

The pill fell to the ground in a loud bang, Yu Chengfeng grabbed a handful of pills and stuffed it into his mouth, and walked out of the pill room with an empty gourd that was taller than others, and went to the creek to hold some water.

Now that you have learned how to refine dust-free water, the next step is to learn how to refine the Belly Filling.

The Belly Pill is the easiest pill to refine, and the materials needed are only dust-free water and Gathering Spirit Grass, which are also the indispensable main materials for refining other first-grade pills. And this Gathering Spirit Grass was planted by the Yu family, so Yu Chengfeng is no stranger to the appearance of Gathering Spirit Grass.

This back and forth, it took another hour or so. Yu Chengfeng hugged the gourd and came to the Danfang again. Just as he was about to push the door and walk in, Yu Chengfeng stopped his figure again and looked towards the room next to the Danfang.

Eventually, he was going to see what was in the room. So, Yu Chengfeng put the gourd lightly on the ground and came to the house next door to the Danfang.

Pushing open the door, which was still full of dry cracks, I smelled the fragrance of herbs coming to my face.

As far as the eye can see, the interior of this room is much larger than the outside, and all the inside are barrels that can be one foot high, and all these barrels are filled with medicinal herbs.

Seeing this, Yu Chengfeng walked into the room ecstatically, looked at the handwriting on the barrel, and finally, Yu Chengfeng saw a barrel engraved with the words 'Gathering Spirit Grass', presumably this bucket must be filled with Gathering Spirit Grass. So Yu Chengfeng jumped onto the three-zhang high barrel, grabbed the spirit gathering grass that had been dried inside, and after sniffing it, he collected a lot of it in the bamboo slips.

After collecting almost everything, Yu Chengfeng walked out of the room and closed the door.

This time, there is no shortage of Gathering Spirit Grass and Dust-free Water, and then you can learn to refine the Belly Pill with peace of mind.

Walking into the Dan room with the gourd, Yu Chengfeng came to a wide place, opened the lid of the gourd, and took out a small amount of Gathering Spirit Grass and Alchemy Furnace from the bamboo slips and placed them on the ground.

After sitting down cross-legged, Yu Chengfeng stared at this small Dan furnace that was only the size of a palm and had a headache, this Dan furnace was so small, how could it be refined?