A few days later, word came that the snake swamp ghost snake had regained its stability. As for the fate of the two fifth-order demon beasts, there was no clear news. The explanation given by the Blood Demon Sect is that the danger has been lifted, so please don't worry.

The danger was lifted, and Zhou Nan finally breathed a sigh of relief. The market returned to normal, and the monks came out of their rooms and began to buy and sell. It didn't take long for the atmosphere to be pushed to the top.

Zhou Nan was not idle, according to the secret recipe on "Barbarian Elephant Decision", he spent tens of thousands of spirit stones, and finally collected all the required dispensings. As long as the toxicity of the rotten bone flower is neutralized, then his body refining can be carried out again.

Without leaving Fang City, Zhou Nan bought some books related to alchemy, went through the formalities with the Fang City Administrator, and applied for a secret room for alchemy.

Like these medium-sized markets, there are secret rooms for alchemy refiners, which are rented to immortal cultivators to earn high profits. This fang market is no exception, but because of its proximity to the snake swamp ghost snake, it is the circulation place of a large number of elixirs, and this secret room related to alchemy is even better than other places.

The secret room of alchemy is divided into three levels, upper, middle and lower, which can refine the upper, middle and lower levels of pills. There are three spirit stones a day in the low-grade secret room, thirty spirit stones a day in the middle-grade secret room, and three hundred spirit stones a day in the high-grade secret room.

The higher the level of the secret room, the better the equipment equipped with flames, Dan furnaces, etc.

These three levels of flames are the mortal fire of the Enlightenment Period, the spiritual fire of the Foundation Building Period, and the fire of the earth lungs that can already be compared with the Old Ancestor Dan Fire of the Yudan Period.

Because the difficulty of neutralizing the rotten bone flower is not very great, and it is not even alchemy. Therefore, Zhou Nan only spent three hundred spirit stones and rented a medium-grade secret room for ten days, which was enough.

There are many medium-grade secret rooms in Fang City, Zhou Nan casually found a remote secret room, opened the formation, and drilled in.

These secret rooms are all equipped with formations, which are directly connected to the guardian array of Fang City. Without the owner's consent, no one else, in general, can get in. After all, alchemy and refining tools are all delicate work, and there is no room for interference. It is necessary to have a well-closed chamber like this.

As soon as he entered the secret room, Zhou Nan felt a familiar wave of heat rushing towards him. Taking a deep breath, Zhou Nan looked at the secret room.

This secret room is not large, only two zhang square. The layout inside is very simple, there is a half-sized copper tripod in the middle of the secret room, and a futon is placed next to it, but there is nothing else.

Copper tripod, set alchemy, gather fire as a whole. There are special pipes under the ding, which can provide a steady stream of spiritual fire. The rules of control are engraved on the wall, and the user only needs to follow them.

The operation of the copper tripod is very simple, that is, directly use the divine mind to activate the formation above and control the strength of the flames. After a short time, he glanced back and forth a few times, and after thinking about it, Zhou Nan was familiar with these operations.

The copper tripod is a spiritual weapon, the level is not high, it is just a lower grade. But don't underestimate it because of this, similar to alchemy furnaces, refining furnaces, these things with special functions, the general market price, are very expensive.

Their manufacture is much more difficult than ordinary spiritual weapons. Without a wealth of experience, ordinary refiners do not have the courage to refine them. Even Zhou Nan didn't dare to pack a ticket, he could refine these furnaces by himself.

took out the 'Mountain Guarding Array', and Zhou Nan added twenty or thirty spirit stones and arranged them. Although this secret room itself has a formation, he is still a little uneasy, and it is always good to be cautious when he goes out. Anyway, he is not bad at this little spirit stone, and he can't joke about his own safety.

After checking everything, Zhou Nan took out a thick blue book from the storage bag, put it on his lap, and read it with a chewing mouth.

This blue book is "The First Solution of Alchemy", although it is not a particularly profound thing, but it is better than practicality. Many alchemists, when they first started, started with this book. Therefore, it is not an exaggeration to say that "The First Solution of Alchemy" is the enlightenment textbook of alchemists.

A day later, after repeated deliberations, Zhou Nan closed the book and finally let out a long breath.

This alchemy is actually not much different from refining. It's just that it's a medicinal herb, and it's a material that is refined.

Both require familiarity with the properties of the material, and then complete the refining according to the secret recipe. It's just that compared to the roughness of refining, this alchemy is more like embroidery, and every step is meticulously crafted. Therefore, the first essence of alchemy, patience is very important.

The first step in alchemy is to refine medicinal materials. First of all, take out the medicinal herbs, and burn off the impurities inside the herbs along the fire. This is not much different from the purification of refining weapons, they are all the same. Therefore, after Zhou Nan lost some medicinal materials for more than ten years, he did a good job.

After failing more than a dozen times in a row, Zhou Nan finally purified a medicinal herb.

The herb is hemostatic and is a white powder. The taste was a little spicy, exuding a faint scorching smell, Zhou Nan just sniffed it, and knew its purity and effect.

The purity of the medicinal materials refined by Zhou Nan for the first time was not high, and they were not suitable for alchemy. But Zhou Nan was not discouraged by this, and took out the medicinal materials again and refined them. Alchemy is like a refining tool, no one is a genius who will succeed as soon as they get started, what they want is practice makes perfect. If you practice more, you will always improve.

That being said, but how precious are medicinal herbs, and how can you be so wasteful? Therefore, it is really impossible to become an outstanding alchemy master without the support of the great power. If you want to raise medicinal herbs on your own, it is more difficult than climbing to the sky.

After only collecting the rotten bone flower once, Zhou Nan lost interest in this kind of life. But fortunately, he has been to the Valley of the Wind, and some of the low-grade medicinal materials in the storage bag are wasted, and Zhou Nan will not be so distressed.

Therefore, after not knowing how many medicinal materials were wasted, Zhou Nan's refining technique finally entered the hall and reached a certain temperature.

In this regard, Zhou Nan was very proud, and even thought that he was very talented in alchemy. But he didn't know what to say, if he let others see him wasting such a waste of medicinal materials, he would have to die of distress. He will definitely point to his forehead and scold him for being wasteful.

Three days later, Zhou Nan summed up a large number of purified new ones, accumulated a lot of experience, and finally passed the level of refining medicinal materials. It took another day, and Zhou Nan finally struck while the iron was hot and refined all the other medicines except for the rotten bone flower.

After resting for a while, Zhou Nan recovered his state, filled up his mana, and took out a big jade box without hesitation. Looking at the blood-red rotten bone flower in the box, his eyes were full of solemnity.

The grade of the bone flower is very high, and it is the best medicinal material that Zhou Nan has obtained so far, except for the Hantan Ice Lotus. Compared with the thousand snake flowers, the yang flowers are also much more precious. It is more than 300 years old. I don't know how the rotten bone giant crocodile escaped all kinds of disasters and raised it to this year?

Although this question is very puzzling to Zhou Nan, it also explains from the side the real reason why the rotten bone giant crocodile has been dead and biting him. After all, if Zhou Nan lost such a precious thing, he might be even crazier than the Bone Rotting Giant Crocodile.

The divine thought unfolded, and Zhou Nan carefully scanned the rotten bone flower, as if admiring a beautiful work of art, knowing every detail of it, and not letting go of anything useful.

The three-hundred-year-old rotten bone flower is basically the top medicinal material in the field of foundation building. Taking a risk for it, Zhou Nan felt that it was not a loss. Not only did it not lose, but it also made a lot of money.

The color of the rotten bone flower is blood red, which looks a little charming, exuding a faint fragrance, like a thorny rose. Although its beauty is suffocating, Zhou Nan did not dare to be careless. This kind of flower seems harmless on the outside, but it is poisonous to the bones. If you're not careful, even he'll catch the road.

After observing for a long time, Zhou Nan finally gritted his teeth and put the whole rotten bone flower into the copper tripod. The formation was activated, and a weak flame was released, which burned up.

Boiled frogs in warm water, this rotten bone anther is violent, and it must be concocted slowly, and there is no urgency.

As soon as the flames burned to his body, the rotten bone flower was full of spirituality and writhed, releasing a rich blood, and Zhou Nan's eyes were a little sour. Taking a deep breath, Zhou Nan divided his divine thoughts into two strands, controlling the flames while suppressing the rotten bone flower to prevent it from tossing.

In this way, after burning for a long time, the rotten bone flower unwillingly let out a buzz, and a stream of dark liquid flowed out of the red light. Seeing this, Zhou Nan was very surprised, he never expected that this red flower would actually flow out of black medicinal liquid.

The black liquid exuded a faint fishy smell, and the medicinal properties were very strong, and as soon as the flames pounced, they were poisoned. This venom has a fierce toxicity in it, and even flames can corrode it. If an immortal cultivator touches it, it will be directly corroded, and there will not even be slag left.

Carefully manipulated the flames, encased in black liquid. Zhou Nan moved it aside.

At the same time, Zhou Nan increased his firepower and squeezed out the rotten bone flowers. After the first time he was soft, the defense line of the rotten bone flower was completely lost. Therefore, after a short time, he reluctantly spit out a small cloud of black liquid again, which was burned to ashes by the flames.

After clearing the ashes, Zhou Nan gathered all the black liquid together, and according to a specific step, changed the intensity of the flames and burned them. Sometimes high, sometimes low, sometimes long, sometimes short. In this way, another half a day passed.

Just when Zhou Nandu felt a little impatient, the black liquid was finally concocted and turned into a small pile of pitch-black powder. Seeing this, Zhou Nan Da Lu laughed and opened the copper tripod. Stopping the flames, Zhou Nan took out a jade bottle and carefully filled the black powder inside.

"Whew, it's finally done. Lying on the ground, Zhou Nan breathed a long sigh of relief.

Next, everything is ready, only the east wind is owed, and it is time to configure the liquid medicine.