As for how to obtain these spirit stones, Li Feng thought about it, and it was nothing more than selling the three pills that he could refine now. Pen × fun × Pavilion www. ｂｉｑｕｇｅ。 info Qi Refining Pill, Earth Soul Pill and Muscle Generating Pill.

As a necessary pill for the cultivation of Qi Condensation Realm disciples, the Qi Refining Pill has a vast market, and it stands to reason that as long as you refine a large amount of it, you will definitely gain a lot of spirit stones.

However, it was precisely because the Qi Refining Pill was very important to the Qi Condensing Realm disciples that once it was discovered that the Qi Refining Pill he had refined was amazingly effective, it would definitely cause trouble.

However, the Muscle Pill does not have the trouble of refining the Qi Pill, but the Muscle Pill is not widely sold and may not be able to earn too much.

After such an analysis, it seems that only the Earth Soul Pill can be sold. However, selling the Earth Soul Pill, Li Feng was unwilling. If this Earth Soul Pill is sold, there will definitely be many disciples in the Donglin Sect who have also learned the Phantom Trace Technique, so what Li Feng knows is nothing.

The three kinds of pills have their own advantages and disadvantages, how to measure them, Li Feng really wants to weigh them.

......

Thinking of the Phantom Trace Technique, Li Feng couldn't help but want to try it again.

Li Feng walked into the courtyard, lifted the aura of the earth, and transported it to his feet.

At this moment, Li Feng felt that there seemed to be something different in the aura of the earth line. As for the difference, Li Feng didn't delve into it, in short, it was not the same as when he used the Phantom Trace Technique to deal with Ning Tao.

The light in Li Feng's eyes flashed, and under the shaking of his figure, he had already reached the left side of the road.

This made Li Feng frown. He clearly felt that this time he performed the Phantom Trace Technique, which was much inferior to before.

"What is the reason for this?"

Li Feng immediately locked his divine sense in the sea of qi, only to find that the earthy aura in the sea of qi was much less than before.

"I see, no wonder I have a different feeling, and the decline in the exercises is due to the decrease in the aura of the earth. ”

Li Feng thought about it carefully and made up his mind in his heart. "It seems that this earth-based aura does not reside in the sea of qi forever, but with the passage of time, even if you don't use these earth-moving aura to perform exercises, the earth-moving aura is slowly decreasing. ”

As for why this phenomenon occurs, Li Feng doesn't quite understand.

Suddenly, Li Feng came to his senses and said to himself, "Could it be that the reason why the Earth Movement Aura gradually dissipates is related to the impurity of the Earth Soul Pill?"

When Li Feng was refining this Earth Soul Pill, he actually didn't get the pure Earth Soul Pill medicinal liquid, and there were many impurities mixed in it.

In order to deal with Ning Tao, Li Feng didn't have time to purify the Earth Soul Pill liquid at that time. At this time, he remembered this matter, and only then did he realize this.

"Anyway, it's not a big deal now, so I'll still take the time to purify this Earth Soul Pill Liquid. ”

......

Li Feng made up his mind to purify the Earth Soul Pill liquid.

To put it bluntly, there are a lot of impurities in the liquid medicine of the Earth Soul Pill now, which are mixed with the active ingredients of the Earth Soul Pill. Li Feng's purpose was to separate the active ingredients of the Earth Soul Pill from those impurities to obtain a pure active ingredient of the Earth Soul Pill.

For separating the two mixed liquids, Li Feng has many ways to separate them based on his previous experience.

For example, the distillation method is to evaporate each component of the mixed liquid according to the different temperatures at which each component in the liquid evaporates.

There is also chemical method, impurities usually react with a certain substance and become precipitated.

However, for the distillation method, distillation equipment is required. Li Feng now has a simple equipment at hand, and this method is impossible to use.

However, the legalization requires a certain theoretical basis, and without a theoretical basis, it can only be done through a large number of experiments. A large number of experiments means that there are many different kinds of substances that can be experimented. This is also something that Li Feng can't do at present.

Li Feng pondered carefully, and under the current conditions, there is only one relatively simple, but very practical method that can be tried now.

This method is applied to such a principle. Generally speaking, as a substance, the solubility is different when dissolved in different solvents.

For example, inorganic matter is easily soluble in water, while organic matter is relatively easy to dissolve in organic solvents.

This is just a specific manifestation, in fact, each solvent, for each substance, can play a different role in dissolving.

The method that Li Feng thought of was to try it with a different solvent, maybe he could make the active ingredients of the Earth Soul Pill dissolve in other solvents, so that the active ingredients of the Earth Soul Pill could be separated from the impurities.

Li Feng thought for a moment, and now, the mixed medicinal liquid of the Earth Soul Pill was dissolved in water.

Then, use some organic solvents first to see if it works.

Of course, compared with the previous world, organic solvents are scarce in this world, but it is not impossible. Li Feng immediately thought of one of the most common and commonly used organic solvents - vegetable oil.

Li Feng walked to the corner of the room, and when he returned to the distance again, he already had an extra bottle of vegetable oil in his hand.

Li Feng put the vegetable oil on a table, and then poured out half of a whole bottle of Earth Soul Pill mixed with medicinal liquid from the jade bottle and poured it into another jade bottle.

Now, each jade bottle has only half of the medicinal liquid.

Li Feng took a jade bottle, poured some vegetable oil into it, then plugged the wooden stopper, grabbed the bottom and neck of the jade bottle with both hands, placed the jade bottle horizontally, and shook it vigorously for a moment.

Afterwards, Li Feng restored the jade bottle to an upright position, placed it on the table, and waited quietly for the liquid inside the jade bottle to return to tranquility.

The liquid inside the jade bottle slowly slowed down until finally, it finally regained its calm.

That's when a miracle happened!

Li Feng saw that in the upper part of the jade bottle, it was the layer of vegetable oil. The originally bright vegetable oil became cloudy at this time, and the color also changed to a dark green.

The lower part of the jade bottle, on the other hand, is an almost transparent, reddish clear liquid.

Li Feng was pleasantly surprised, and with this phenomenon, it can be seen that this experiment has received unexpected results.

It's just that it is still unknown whether the active ingredient of the Earth Soul Pill is dissolved in the oil or in the clear liquid in the lower layer.

There is no difficulty in verifying this. Li Feng used a small method to separate the vegetable oil from the clear liquid, and smelled it with his nose, the smell of the vegetable oil was dirty and unpleasant, while the smell of the clear liquid was a fragrance.

Judging from the smell alone, Li Feng concluded that the active ingredient of the Earth Soul Pill must be in the clear liquid.

This was unexpected by Li Feng, who originally thought that the active ingredient would dissolve into vegetable oil. In that case, the Earth Soul Pill liquid cannot be drunk directly, and the vegetable oil needs to be removed. Otherwise, drinking a stomach of oil will be very uncomfortable if it is slippery and greasy.

This is not bad, it is the impurities that have gone into the oil, and the active ingredient of the Earth Soul Pill is still in the water, which saves Li Feng a lot of trouble.