After a few days of study, Lu Zheng basically mastered a series of steps of alchemy, and for a while, a strong impulse for alchemy surged in his heart.

However, before alchemy, there are still some preparations to be made, the first thing is to build an alchemy furnace.

Secondly, a Dan prescription is needed, and there is a hint in the "Alchemy Baojian" that each jade slip hanging on the giant pillar in the fourth layer of the dzi has a Dan prescription stored.

The giant pillar was divided into nine sections, and the higher the hanging position, the higher the grade of the pill, while in the immortal cultivation world, they divided the pill into four grades.

The first to third pins of Dan are ordinary pills, the fourth to sixth pins of Dan are Baodan, the seventh to ninth pins are elixirs, and the top nine pins are elixirs.

Lu Zheng's mind moved, and his mind then entered the jade slip closest to the ground on the giant pillar.

Suddenly, a one-pin pill recipe was displayed in his mind, and the jade slip recorded the pill recipe of the one-pindan "marrow washing pill".

The Dan prescription mainly records the medicinal materials required for alchemy, the effect and efficacy of the marrow washing pill, and the amount of each medicinal material, including the order in which the medicinal materials are put into the alchemy.

Generally speaking, the Danfang will only record the medicinal materials, effects and efficacy required for alchemy, but will not record the amount of medicinal materials and the order of delivery, which need to be explored and studied by alchemists in the process of alchemy.

And Lu Zheng knew that the pill recipe in each jade slip on this giant pillar recorded the amount of medicinal materials needed for alchemy and the order of delivery.

This is the brainchild of countless years of accumulation of countless alchemists in the Medical Immortal Sect, and with such a pill prescription, Lu Zheng will save a lot of time in the process of alchemy.

Therefore, he is very grateful to the predecessors of the Yixian Sect.

Thinking of this, he felt a little melancholy in his heart, because the Medical Immortal Gate had been destroyed, although he had promised Master Xuan Qingzi to avenge the blood hatred of the Medical Immortal Gate, in fact, he was really not sure that he would become an immortal, after all, according to Xuan Qingzi, the aura on the earth was too thin.

The medicinal materials for refining the myelin cleansing pill are not complicated, only nine kinds, and the names of medicinal materials on the Taiqing Continent and the earth are also somewhat different, but fortunately, there are many image records of each medicinal material in the Danfang, Lu Zheng has studied traditional Chinese medicine, so just look at the image, the names of the medicinal materials are different, and you can also distinguish which medicinal materials it is.

One of the nine medicinal materials used to refine the Cleansing Pill is more difficult to find, and that is wild ginseng, and the remaining eight medicinal materials are all ordinary medicinal materials, and even seven medicinal materials can be found in the clinic.

In addition, the medicinal effect of the myelin washing pill is to help ordinary people wash the marrow and eliminate the toxins accumulated in the body.

Generally, after recruiting new disciples, the Immortal Cultivation Sect will give them a part of the Pulp Cleansing Pill to take, so that after they are officially exposed to the exercises, it will be easier and faster to cultivate.

Therefore, the Pulp Cleansing Pill is a must-have ordinary pill for every Immortal Cultivation Sect, just like the cold medicine in pharmacies on the earth.

Of course, that is in the world of cultivating immortals, and it is another matter on the earth, the current earth is seriously polluted, the air is polluted, and it contains a lot of harmful gases, and even there are a lot of chemicals in the food.

Therefore, in various cases, there are quite a lot of toxins accumulated in the human body, which is one of the reasons why the incidence of cancer is getting higher and higher.

The function of the Pulp Cleansing Pill is to wash the marrow and detoxify, so Lu Zheng can be sure that if it is refined, diluted and sold, it will definitely be rich.

In the future, if he wants to build a medical immortal sect on the earth, he will definitely need a lot of money, so it is essential to accumulate wealth.

Thinking of this, he wanted to refine the marrow cleansing pill as soon as possible.

Of course, sharpening the knife is not a mistake for a woodcutter, and without the Dan furnace and the required medicinal materials, even if he has great ability, he will not be able to refine the pill.

Before he knew it, it was the early morning of the second day, and according to his usual habits, he got up and went to the yard to move his muscles.

After the event, Lu Hui and Lu Lan had already prepared a fragrant breakfast.

After breakfast, he called Lu Qin and Lu Xiaotian in Yanjing and Hou Junfei in Handu respectively and asked them to help collect wild ginseng for more than ten years.

Wild ginseng is the most important medicine for refining the myelin cleansing pill, which is not only expensive, but also very rare, so it is difficult to collect it by himself.

However, the other eight herbs are easy to collect.

For his request, Lu Qin and the three of them all agreed, and did not ask him why he collected wild ginseng.

After thinking about it, Lu Zheng called Min Chenggong from Zhonghai again.

Min Chenggong, who received his call, was very polite and respectful, and agreed to it after hearing his request, without even mentioning the price.

Before going to school, he handed Lu Hui a drawing of the alchemy furnace and asked her to find a smelting factory to build it, and at the same time handed Lu Lan a recipe for ordinary medicinal materials and asked her to purchase it in large quantities.

Speaking of which, Lu Zheng hadn't been to school for twenty days, and his classmates were very surprised to see him coming.

In the days when he was away, another experimental exam was conducted, and because of the study group, the seventh class of the second year of high school was very outstanding in this exam.

Subsequently, the principal Wang Weimin went to him to discuss the prize money of the basketball game, and Lu Zheng suggested that it be divided equally, and at the same time, he also donated the prize money he received to the seventh class of the second year of high school as a class fee.

At the same time, after the news of his return to school spread, reporters who wanted to interview him flocked to him, and Lu Zheng was very happy to accept this interview, after all, fame is conducive to the collection of the power of faith.

After returning to the clinic after school, Lu Hui had already come back and reported to Lu Zheng that she had placed an order with a smelter in this county, because Lu Zheng had extremely high requirements for the Dan furnace, and the alchemy furnace was all made of copper, so the price was slightly higher, requiring 500,000 yuan.

Lu Zheng has no opinion on this.

At eight o'clock in the evening, Lu Lan, who went to buy medicinal materials, also came back, and the eight kinds of medicinal materials needed for alchemy were purchased in total, and at the same time, she also contacted a medicinal material merchant, and she was going to Haizhou City tomorrow to see the goods.

Lu Hui and Lu Lan Lu Zheng were very satisfied, and gave them a low-grade spirit stone respectively.

When it came to the lower grade spirit stone, Lu Zheng couldn't help but think of Lao Yu.

He was able to obtain a magic weapon and more than 2,000 lower-grade spirit stones, which could be said to take advantage of Lao Yu, and he had not been in contact with Lao Yu for a while, so he planned to visit Lao Yu tonight.

Lao Yu was very happy about Lu Zheng's arrival, and after not seeing him for a while, Lao Yu's cultivation has also made some progress.

However, because of the age, the increase in repair is limited.

The two of them can be said to be the only cultivators known on the earth at present, and one is from the immortal cultivation inheritance of the other world, and the other is a native immortal cultivator.

Although the systems are different, there are many things in common, and the two have been discussing until the early hours of the evening, and they still feel unsatisfied.

Lu Zheng taught Lao Yu all the ways of the talisman he had comprehended, as well as the taboos in cultivation, and Lao Yu also told Lu Zheng about the state of mind cultivation insights he had recently explored.

On the occasion of leaving, Lu Zheng took out two hundred spirit stones and gave them to Lao Yu, with this batch of spirit stones, his cultivation that is difficult to advance will definitely be able to make full progress, if he is lucky, he may not be able to build a foundation and improve his lifespan.

At first, Lao Yu refused, but Lu Zheng made it clear that these spirit stones were obtained from his storage ring, and if Lao Yu didn't accept them, then we wouldn't have to deal with them in the future.

For Lu Zheng, who has forgotten his old friend, he cherishes it very much, so he has to accept two hundred spirit stones, and he is even more inexplicable in his heart.

He has lived for nearly 100 years, and he can be said to have seen through the world, Lu Zheng spent money to buy his ring, but it can be said that the storage ring has nothing to do with his old age.

But Lu Zheng is still willing to take out two hundred spirit stones to give to him, if he changes to someone else, let alone two hundred spirit stones, one may not be willing to give him, after all, in the era when the spiritual energy of heaven and earth is extremely thin, the role of spirit stones has far exceeded its original value, and it is almost the only cultivation resource.

Back at the clinic, Lu Zheng did not study alchemy, but seriously comprehended the mood and insights from Lao Yu.

After one night, he absorbed the state of mind that Lao Yu had passed on to him, and was surprised to find that his slightly unstable realm had magically become solid, and even the true yuan seemed to have been condensed a little.

In the cultivation system of the Taiqing Continent, there is no such thing as state of mind, the early stage of cultivating the true yuan, the middle stage of cultivating the golden pill and the yuan baby, and the later stage of the cultivation of the yuan god.

After coming into contact with the state of mind this time, Lu Zheng faintly felt that the state of mind realization was very important to the practitioner, of course, with his current cultivation, he couldn't see how much the state of mind realization had a lot of effect on cultivation, but he planned to insist on cultivating the state of mind realization.

A few days passed in a flash.

According to the news from the smelter, in two days, the Dan furnace that Lu Zheng asked for would be completed, and Lu Lan also bought nearly 20,000 catties of high-grade medicinal materials from the medicinal herb merchant, and promised that he could continue to provide them if needed in the future.

At the same time, Lu Qin and Lu Xiaotian also lived up to Lu Zheng's expectations, and the two worked together to help him get more than 30 wild ginseng.

The years of this batch of wild ginseng range from ten years to one hundred years, and the highest value is a wild ginseng tree with a 120-year-old ginseng, which cost Lu Xiaotian 8 million alone.

If it weren't for Lu Xiaotian's boldness and a great favor for him, the other party would not have sold it, and it is said that someone had bid 10 million before, and the other party did not have the idea of selling.

More than 30 wild ginseng trees cost a total of more than 40 million yuan, and Lu Xiaotian was originally unwilling to ask for this money, after all, Lu Zheng asked him to help launder money last time and gave him 200 million US dollars.

However, Lu Zheng insisted on giving, and in the end, Lu Xiaotian wiped off the change, received 40 million from him, and personally sent this batch of wild ginseng to Tu County in the past two days, after all, the value of this batch of wild ginseng is too high, and it is too risky to send it by mail.

Hou Junfei also collected some wild ginseng there, but there were only seven or eight of them, and the highest one was only fifty years old.

It is said that he has a friend who happened to be pouring wild ginseng, and knew that Lu Zheng wanted wild ginseng, so he directly ate all the other party's goods.

Although wild ginseng is precious, but because of the price, it is actually not easy to sell, more than 40 trees, it can be said that the special dumping of wild ginseng merchants in a year's shipments, so he said that if Min Chenggong still needs it, he can also get a batch.

After Min Chenggong consulted Lu Zheng, he proposed to the other party that no matter how many wild ginsengs there were, he could eat them, but there was a premise, that is, all wild ginseng could not have problems.

The other party is naturally full of promises, and naturally will not sabotage his successful cooperation with Min for a little profit, after all, the Min family is one of the top families in Zhonghai, as long as you take this line, are you afraid that there will be no chance to make a fortune?

Everything is ready, only the east wind is owed, as long as the alchemy furnace is made, Lu Zheng can start alchemy.

However, the end of the sophomore year of high school is beginning to arrive.

Of course, the final exam is no pressure for a student like Lu Zheng, and even most of the students in the seventh class of the second year of high school are not under any pressure, but look forward to the arrival of the exam, because only by passing the test of the exam can their progress during this period be tested.

After the one-and-a-half-day exam, Gu Xin proposed to travel together.

Lu Zheng didn't have the intention of traveling, he planned to take advantage of this time to get the marrow washing pill out, because this afternoon, the people from the smelting factory had already sent his customized alchemy furnace to the clinic.

For this reason, he thought of a way, which was to let Lu Hui and Lu Lan accompany Gu Xin together.

On the second day, after Lu Zheng sent Gu Xin and the three of them away, he asked Ye Miaoge to be optimistic about the clinic, and he went into the backyard with his head bored.

She not only taught Ye Miaoge the method of cultivating immortals, but also taught her some medical skills by the way, so in the face of some minor pains and diseases, she can completely cope with it, and with the experience during this time, he can rest assured that the clinic will be handed over to Ye Miaoge.

In the backyard, Lu Zheng looked at this triangular copper furnace with a height of one meter eight, and a smile couldn't help but appear on the corner of his mouth, this Dan furnace can only be regarded as a Dan furnace embryo, if you want to become a real Dan furnace, you also need to depict some spiritual patterns inside and outside the copper furnace.