"The pills that have been refined using herbs for more than fifty years are priced at thirty spirit stones per pill in the Fang Market, and this kind of pill is only provided by some powerful merchants, and it also needs to be pre-ordered. I suggest that you go to Fang Market and buy the corresponding herbs, and I will refine them for you, so that the cost of each pill can be reduced to twenty-five spirit stones. ”

Each pill costs thirty spirit stones, and Rao is Xiao An has a little net worth, and he was also shocked when he heard this. If you work in Fang City, you can get a monthly salary of thirty spirit stones every month, which is already very high. Even so, a month's income can only buy one pill, which is too expensive.

Later, Xiao An realized that he was only a seventh-layer Qi refining monk, but taking the elixir of a ninth-layer Qi refining monk, he would definitely feel expensive.

At this time, Xiao An finally understood why Du Zhiyun got as many as 100 spirit stones every month, but he always said that he didn't have enough spirit stones. Although high-level monks earn more spirit stones than low-level monks, their cost is also significantly higher.

Xiao An also understood why Du Zhiyun's expression was so strange, and he clearly said, "Senior brother, hurry up and take out your old bottom!"

Alchemy is a very money-burning thing, especially in the early stage. However, after the Cheng Dan rate reached a certain level, alchemy became the most lucrative industry, which can be seen from Du Zhiyun's refining of the Ning Yuan Wen Mai Dan.

The Ning Yuan Wen Mai Pill taken by the seventh-layer Qi refining cultivator can be used with a thirty-year-old jade ginseng and five designated herbs that have reached a ten-year age. In the Fang Market, the price of a thirty-year-old jade ginseng is ten spirit stones, and the packaging of the five auxiliary medicines only requires ten spirit stones, and the refining materials for each furnace are less than twenty spirit stones.

If it is refined by Senior Brother Du, the success rate of each furnace is about eighty percent, which is equivalent to less than three spirit stones per pill material. The price in the market is twenty-five spirit stones per bottle, and each bottle only has three pills, which is equivalent to eight spirit stones per pill. Each furnace of pill Senior Brother Du can earn more than forty spirit stones.

However, the Ning Yuan Wen Mai Pill taken by the ninth-level Qi refining cultivators needed to use more than fifty years of jade ginseng as the main medicine, and the auxiliary medicine required seven designated herbs that had grown for more than twenty years, and the price of these herbs was about one hundred spirit stones.

If calculated according to Senior Brother Du's forty percent pill rate, the material cost of each pill alone reached twenty-five spirit stones, while each pill on the market combined with thirty spirit stones, Senior Brother Du could only earn twenty spirit stones per furnace of pills. However, the time spent refining the nine-layer Condensing Yuan Wenmai Pill was several times that of the seventh-layer Qi refining pill, so Du Zhiyun just didn't lose money refining this pill.

If Du Zhiyun increased the Cheng Dan rate to sixty percent, the income of each furnace would reach eighty spirit stones.

The vast majority of the Qi refining nine-layer pills circulating in the Fang Market were from alchemists in the foundation building period, and their Dan formation rate was at least eighty percent, and the income from each furnace could reach one hundred and forty spirit stones.

The longer the herb, the more time-consuming it is to pre-process, and the time for opening the furnace for alchemy is only a part of it. Therefore, when refining pills, alchemists often prepare materials for several furnaces at a time, so as to shorten the refining time of each furnace of pills. Moreover, refining the same pill continuously can best improve alchemy, and will also maintain the pill formation rate at a high level.

"Senior Brother Xiao, you must pay attention when buying herbs, you can't be deceived by sellers, some sellers will fool people with companion demon grass. ”

After leaving Du Zhiyun, Xiao An began to reflect on himself in his heart.

A few days ago, he spent twenty-five spirit stones from the Fang Market to buy a bottle of Ning Yuan Wen Pulse Pill, and when Pang Boxiong was evaluating the items of the beard, each bottle of pill was estimated at fifty spirit stones. At first, he thought that Pang Boxiong deliberately doubled the offer to pit himself, but now he realized that he was wrong to blame the other party.

This incident also reminded Xiao An that when he didn't understand things completely, he couldn't jump to conclusions.

After sending Xiao An away, Du Zhiyun returned to the house and poured himself another cup of tea, and hummed a little song happily.

With his current alchemy level, if he wants to be improved, he can only refine the pill with more than fifty years of medicinal herbs as the main medicine. But since the closure of the mountain, although he was lucky to occupy the Qishifang City, the pills sold in the Fang Market were all used by the monks of the sixth and seventh levels of Qi refining, and the medicinal herbs that had been around for fifty or sixty years rarely appeared in this Fang Market.

I managed to scrape together a few furnaces of herbs for more than fifty years, and the refined pills had been placed in the store for more than two months, and they still hadn't been sold. And refining low-grade pills has not improved his alchemy skills, and now the number of times he does his own alchemy is getting less and less, and he almost forgets that he is an alchemist.

I gave Xiao An a lot of prescriptions today, and I believe that it won't be long before I can open the furnace for alchemy again.

......

The fluorite in the room emitted a soft light, Xiao sat quietly at the table, holding a thick book in his hand, reading carefully, there was a tall stack of classics in the corner of the desk, the room was extremely quiet, only the sound of Xiao An turning the pages.

These books were all given to him by Du Zhiyun today, and along with the books, there was a stack of prescriptions, as many as dozens of them.

These prescriptions not only include pills for nourishing the meridians and protecting the veins, but also package various pills such as detoxification, marrow cutting, body forging, and spirit, and there will be four or five prescriptions for each type of pill.

Moreover, the main drugs of these prescriptions are based on 50-year-old herbs, and each list contains detailed information on the name, dosage and age of the herbs required for each pill.

And the thick stack of classics records the information of various herbs, and the introduction of these classics to medicinal herbs is more detailed than the one that Shen shopkeeper gave himself back then, not only the appearance characteristics and growth environment of the herbs, but also how to identify the medicinal properties of each herb, and even record the difference between normal herbs and accompanying demon grass.

What Xiao An is doing now is to carefully study the medicinal properties of the herbs involved in the prescription, so that he will not be deceived by the seller when he buys.

Time passed little by little, and it was not until it was almost dawn that Xiao An rubbed his brows, broke away from the thick pile of books, and slowly paced in the room. The long reading of the dictionary made Xiao An's mind confused, and after a while, Xiao An's mood became calm and relaxed.

The short period of leisure made Xiao An's thoughts drift back to more than a month ago, whenever he remembered the incident of being chased by the pig demon that day, Xiao An always felt a little unreal.

Xiao An, who was pale at the time, watched the pig demon walking towards him step by step, and the rich demon aura mixed with the tyrannical aura suppressed Xiao An in place, unable to even move.

The pig demon's fangs got closer and closer to him, and the mucus on the fangs slowly dripped onto his feet, legs, shoulders, and head. At this time, the only remaining spiritual power in Xiao An's body was still unable to function, and just when Xiao An thought that his life was going to be suspended, the huge mouth suddenly moved away from him.

The pig demon seemed to remember something, stared at the copper bell-like eyes, and looked at Xiao An with "innocent" eyes: "What does it mean to live and die, to kill or not to kill?"

"The snake boss was in too much of a hurry just now, and he didn't explain it clearly. Looking at the expectant expression on the pig demon's face, Xiao An really wanted to jump to his feet and scold.

"Obediently, Ancestor, I was just in need of supplementation, and a fat pig was sent to the door, which is really good!" An unfamiliar voice suddenly appeared, startling the pig demon and Xiao An.

At this time, Xiao An found a gray mist about the size of a sea bowl, floating above the pig demon's head. The pig demon also didn't know when this gray mist appeared, and hurriedly took a few steps back, distancing himself from this gray mist.

Compared to the pigg, which was the size of a house, the gray mist the size of a sea bowl was extremely weak. It gives the feeling that you can blow it away with a breath.

Looking at this gray mist, Xiao An's heart suddenly tightened, as if a pair of invisible hands were clutching Xiao An's heart. The pressure brought to Xiao An by this gray mist was much more terrifying than that of the pig demon. It was as if he was not facing a gray mist, but a 10,000-year-old demon.

The rough-nerve pig demon didn't feel the fear in Xiao Anxin's heart, but disdainfully swept towards the gray mist with his divine sense. However, after the divine consciousness entered the range of the gray mist, there was no feedback, as if the gray mist did not exist at all. But the sound just now did come from this gray mist, which made the pig demon very confused.

"What are you? Are you talking to Grandpa Pig?" the pig demon took a few steps back, staring at the gray mist with annoyance.

This deceitful gray mist evokes some not-so-good memories of the pig demon, making the pig demon have a tendency to explode.

Many years ago, when the pig demon was still a demon beast with low cultivation, many demon beasts around him laughed at their stupidity, often partnered to bully themselves, and used some similar methods to scare themselves. Although after his cultivation was promoted, he swallowed all the demon beasts that played with him back then into his stomach, but until now the pig demon still hates others joking with him.

"It's been how many years since anyone dared to talk to me like this, and I wanted you to live a few more days, but since you are looking for your own death, then I will fulfill you!" The gray mist had just finished "speaking", and it pounced on the pig demon like a meteor.

Although the pig demon has a stupid brain, his reaction is not slow, as soon as the gray mist moves, seven or eight round earth balls fly out of the pig demon's mouth, and these earth balls fly towards the gray mist from different angles.

The two sides were already extremely close, and almost as soon as the gray fog moved, those dirt balls were in front of the gray fog.

There was no sign of a spell confrontation after the two came into contact, and those dirt ball spells began to disappear from the point of contact after making contact with the gray mist. After coming into contact with the Earth Ball spell, the shape of the gray mist was not affected at all, and the speed of the gray mist and the spell was not slowed down by the collision in the whole process.

This process seemed slow, but it was actually extremely fast, and in the blink of an eye, these seven or eight spells were swallowed up by the gray mist.

This result was beyond Xiao An's expectations, and Xiao An had witnessed the power of these earth ball spells hitting the gray crane just now. Although the pig demon has the lowest cultivation among the three demon cultivators, the power of its earth ball spell is firmly superior to that of the rat demon, and it is on par with the snake demon.

The pig demon was also stunned by this result, and was stunned for a while, only to be hit head-on by the gray mist, which drilled into its body along the pig demon's eyes, nose, and wounds, and disappeared into it in a blink of an eye.