The more Li Feng thought about it, the clearer and clearer his mind became. Pen Fun Pavilion wWw. ｂiquge。 "It seems that after the refining is completed, the ingredients of the Wet Spirit Grass can be eliminated to obtain the active ingredients of the Shen Qi Pill. ”

Li Feng was quite excited in his heart, such a complex problem, in the end, only need to be done a little. Not only did things become clear and clear, but they also had a purpose in operation.

This liquid that does not humidify the spirit grass, Li Feng tried it. At the beginning, the color of the liquid medicine was a turbid dark green, but as Li Feng continued to increase the temperature, the color of the liquid medicine remained unchanged. Judging from the color alone, the liquid did not react at all.

"No, it looks like you still need to use Wet Spirit Grass. Only by using the Wet Spirit Grass will the liquid medicine react, and when the time comes, it is only necessary to separate the Wet Spirit Grass from the liquid medicine. ”

The liquid medicine that needed to separate the Wet Spirit Grass, Li Feng now had four bottles, and there was no need to refine more.

Now, the blue ingredient in the four bottles of liquid medicine is the wet spirit grass, how to separate the blue wet spirit grass? The key question is that the liquid medicine is a liquid, and the main component of the wet spirit grass is also dissolved together in a liquid state. Obviously, it is not feasible to evaporate all the water in the liquid medicine by drying it, and it is still impossible to separate the wet spirit grass by doing so.

Moreover, this medicinal liquid is not like the previous alchemy, which will automatically stratify after being placed for a period of time. The blue color of the Wet Spirit Grass is always mixed with the medicinal liquid, and it seems that even if it is left for 10,000 years, it will not produce any layering.

"And how do you separate them?"

According to Li Feng's experience, there are various methods to separate this mixed liquid medicine, and the simplest and most direct method is called the extraction and separation method.

This method is to use the principle that different components in the mixture have different affinities for the extract, so as to make a certain component only dissolve into one extract, but the rest of the components cannot be dissolved in it, so as to achieve the purpose of separation.

The first thing Li Feng thought of was this most simple and direct method.

In fact, until this moment, what kind of extract can be used to separate the wet spirit grass, Li Feng is not clear. But one thing is certain, and that is the extract, which must be different from ordinary water.

But what else could Li Feng find besides water?

Li Feng stood up and walked around the cave. The cave is not big, and Li Feng walked through the cave in less than a moment. Aside from a living fountain, no liquid remains.

"Could it be that the extraction method doesn't work, and you have to think of another way?" Li Feng thought secretly.

The facts are here, the resources in this cave are poor, and there is no extract that Li Feng needs, except for water. Li Feng shook his head slightly, he finally thought of a feasible way, but because of the influence of objective factors, he had to give up, which was a pity.

At this moment, Li Feng, who was sitting cross-legged, suddenly stood up from the ground. He thought of something, and his eyes couldn't help but twinkle.

At the same time, all kinds of things appeared out of thin air on the ground under Li Feng's feet, including spiritual grass and pills, all over Li Feng's feet. It turned out that these things were the things in Li Feng's bag.

Suddenly, Li Feng stopped churning, grabbed the void in his palm, and a red jade bottle was grabbed by Li Feng in his hand.

The ruby bottle is a little heavy to start with, a little cool, and the capacity is about two liters.

The corners of Li Feng's mouth showed a slight smile, gently lifted the bottom of the gourd, and unscrewed the lid.

As the lid was lifted, the jade vase could be seen filled with a white, paste-like solid.

Li Feng used his little finger to pick out some white paste and twisted it between his two fingers. The white paste is very smooth and creamy, giving off a slight fishy smell, which is the grease of solid animals.

"These oils, as long as I dissolve them into liquid oils and mix them into the solution of Shen Qi Dan, this oil is a very good extract. Li Feng pondered.

It turned out that this red jade bottle filled with grease was obtained by Li Feng from Qian Feihan. At that time, he only glanced at it hurriedly, and he didn't know what kind of spirit beast's grease it was. He wanted to give up at that time, but the ghost made the gods swindle, and he didn't know how he changed his mind at that time, and finally put the jade bottle into his Qiankun bag.

Unexpectedly, what Li Feng got by accident at the beginning actually came in handy today.

......

At that moment, Li Feng found a jade bottle and poured some of the grease from the red jade bottle into the jade bottle he found. Subsequently, Li Feng used the fire aura and heated the jade bottle slightly, and the solid grease turned into liquid grease in less than a moment.

Then, Li Feng poured the blue mixed liquid of Shen Qi Dan into the half bottle of grease.

After all this was done, Li Feng plugged the bottle stopper, grabbed the jade bottle with both hands, turned the jade bottle upside down, and shook it vigorously dozens of times until the liquid in the jade bottle was fully mixed, and then the jade bottle was placed on the flat ground upright.

The grease in the jade bottle, due to the shaking, turned into countless tiny oil droplets, which swirled wildly in the jade bottle, looking chaotic and abnormal.

This kind of chaos is in stark contrast to Li Feng's mood. Li Feng's mood was very peaceful, he had made any preparations, this road was not going to work, it was a big deal to think of another way, whether it was success or failure, he could face it calmly.

Time passed by minute by second, and the chaotic medicinal liquid in the jade bottle finally gradually regained its calm.

A dividing line, in the middle of the jade bottle, was also gradually revealed, and gradually became clear.

Li Feng didn't even blink his eyes, staring straight at the dividing line.

After another quarter of an hour, Li Feng let out a long breath and subconsciously said, "I...... I succeeded......"

In the middle of the jade bottle, there is a very clear dividing line, the upper layer is the color of azure, and the lower layer is a liquid that is so pure that it is almost transparent.

What Li Feng could be sure of was that there were two substances in the Shen Qi Pill, one was the active ingredient of the Shen Qi Pill, and the other was the medicinal liquid of the Wet Spirit Grass.

From this, it can be judged that the blue liquid in the upper layer must be the wet spirit herb liquid dissolved in the spirit beast oil. And the lower layer, needless to say, must be the active ingredient of Shen Qi Dan.

Next, Li Feng carefully separated the upper layer of oil from the jade bottle, and the remaining transparent liquid was kept in the jade bottle.

Looking at the medicinal liquid in it, Li Feng nodded frequently, "If my inference is correct, this is the active ingredient of Shen Qi Pill." ”

Li Feng held the jade bottle containing the colorless transparent liquid in his hand and stared at it for a long time.