This coexistence of immortality and toxicity of the Spirit Solving Grass aroused Nie Fei's interest. He is a doctor of chemistry, and he is particularly interested in all the chemical properties of matter, and when he encounters something he does not understand, he always wants to study a result, which is also his nature as a natural scientist.

He plucked the two Spiritual Relief Grasses, and according to the ordinary analysis steps, he first put the two Spiritual Relief Grasses in a shallow-bottomed stone vessel, and with a wooden stick, pounded the two Spiritual Relief Grasses into grass mud, and then moved all the grass mud into a jade cup.

The reason why he wanted to move the grass mud into the jade cup was because there were no transparent utensils such as glass in this world, and when the liquid was cloudy, he could not see the situation below the liquid level when he looked above the liquid level. And this jade cup, although it is not completely transparent, at least it maintains some transparency.

After all the grass mud was filled into the jade cup, he poured water into the jade cup, filled it to two-thirds of the jade cup, and then did not add it again. He broke off a thin wooden stick from a tree, stretched it into a jade cup, and stirred it constantly. After about half an hour of stirring, when the grass mud was completely stirred, he pulled out the stick. The water containing grass mud in the jade cup slowly stood still until it did not move at all, like a piece of dark green gel contained in the jade cup.

After another half an hour, Nie Fei carefully picked up the jade cup, trying to keep his movements of holding the jade cup coherent, so as not to vibrate into the liquid inside the jade cup. He held the jade cup to eye level with him, and looked inside through the translucent wall.

I saw that the liquid in the jade cup had been stratified, and the lower layer accounted for about one-fifth of the total liquid, which was opaque and the residue of grass mud. The upper layer is a green liquid.

Although the liquid was stratified, Nie Fei did not feel the slightest joy. Because this stratification is only the lowest level of stratification, solid-liquid stratification, it does not separate the immortality and toxicity in the spirit solving grass at all. The next layer of solid ingredients is basically the dregs of grass mud, which has no value. The immortal and toxic components of the Spiritual Relief Grass should all be dissolved in the green liquid of the previous layer.

Nie Fei didn't give up there. He took another jade cup, poured half of the green liquid into the new jade cup, and then ran into the kitchen, scooped half a spoonful of vegetable oil, and poured it into the cup. After a period of thorough stirring, he placed the jade cup on the table and waited for the liquid in the jade cup to stratify. The reason why he did this was because he thought of the general substance, which is related to the same family, and organic matter is easier to dissolve in organic solvents, and inorganic matter is easy to dissolve in inorganic solvents. Since water, as an inorganic solvent, cannot stratify immortality and toxicity, then, perhaps, vegetable oil, an organic solvent, can do it.

After another half an hour, Nie Fei picked up the jade cup again and watched. The liquid in the jade cup had been layered again, and the top layer was the half spoonful of vegetable oil he added, which had turned from bright to green at this time. And the lower layer is undoubtedly water, and there is no trace of green in it. Nie Fei was dumbfounded, such a result showed that all the substances in the original water had been transferred to the vegetable oil. However, this is useless at all, and it still can't isolate the immortality and toxicity in the Spirit Relief Grass.

At this moment, Nie Fei's mind suddenly lit up, and he seemed to have grasped something crucial. But what it was, he didn't know for a while.

"What exactly?" he racked his brain, for he knew that this flash of inspiration might be the solution to the problem. "Organophilic solvent ...... Fairy ...... Toxicity...... What is it? What is the connection?"

Suddenly, a flash of lightning flashed in Nie Fei's mind again. He jerked up from his seat and exclaimed excitedly, "I see. "Since the Spiritual Relief Grass is rich in spiritual energy, can we use some solvents with spiritual energy to dissolve the immortal components in the Spiritual Relief Grass in this solvent?"

Nie Fei was excited, so he wanted to start the experiment immediately, but there was no solvent with aura around him. It is actually not difficult to get this kind of solvent, it is available in Tianling Castle, and it is inexhaustible.

It turns out that in the northeast corner of Tianling Fort, there is no range of the big array, there is a spring, which is a spiritual spring, and the people in the fort call this spiritual spring the eye of heaven. It contains spring water that never runs out, and the spring water contains pure aura. It's just that the aura in this spring water can't be stored in the body for a long time, and after a period of time, at most, an hour, the aura will disappear from the body. Therefore, this spring water does not have any substantial benefits for cultivating the exercises, but it can only replenish the depleted spiritual energy in a short period of time.

Nie Fei couldn't hold back, he saw that it was too early, so he walked out of the house and rushed towards the Spirit Spring Heavenly Eye. If he doesn't come up with a result today and test whether this method works, he won't be able to sleep tonight.

......

Tianyan Spring Water is firmly controlled by Tianling Castle, and it is not that anyone who wants to get some spring water can get it, and if anyone needs it, they can buy it with spirit stones. This spring water is not expensive, a low-grade spirit stone can buy a large bucket.

Nie Fei had checked his storage bag, there were about two hundred low-grade spirit stones in it, and he came here this time to buy a bucket of spring water. In fact, he couldn't use a bucket of spring water at all, he only needed one cup or two cups to do that experiment. But there is no way, this low-grade spirit stone is already the smallest spirit stone, so I have to buy a bucket. "A bucket is a bucket, and the rest is left for reserve. ”

Nie Fei pondered as he quickened his pace and hurried towards the eye of the sky.

After a short time, Nie Fei came to Tianyan. The periphery of Tianyan Spring has been surrounded by a wall, and there are special guards inside. The person guarding this heavenly eye was a short, dark and thin old man in his fifties, just a mortal named Wang Wu. He took seven strong men in their twenties and less than thirty years old, guarding the eye of heaven day and night. In fact, if there were really monks who came to seize the spring water, these eight people would not be opponents at all, but in Tianling Castle, no one had such courage, although this Wang Wu was nothing, but the castle lord Lu Bowen could not afford to provoke. Therefore, Wang Wu bears the name of guarding the eye of heaven, but in fact, he is just doing the work of buying and selling.

As soon as Nie Fei walked into the courtyard, he was discovered by a young man. "Who is it?" the man asked, stepped forward a few steps, and when he saw that it was Nie Fei, his face changed suddenly, "It turned out to be ...... Be...... Young Master Nie ......" Without waiting for him to finish speaking, he turned around and ran inside, shouting as he ran: "Fifth Uncle, Young Master Nie...... The young master is here......"

Seeing his panicked look, Nie Fei couldn't help but wonder, why didn't he entertain the guests, but ran away?