It has been three years since the Dan Fang of Miao Zhen Dan was in the hands of Zhang Zhixuan, and in these three years, Zhang Zhixuan has free time to practice, and he will seriously figure out this Dan Fang, and now, he has become familiar with all aspects of this Dan Fang.

With certainty, Zhang Zhixuan asked Qingchan to protect the Dharma, closed the gate of the cave, and prepared to start the retreat alchemy.

This time the alchemy was very important to Zhang Zhixuan, if the refining failed, not only would he lose the material money of 1,200 spirit stones, but the time to break through the third-order mid-grade alchemist would also be delayed for a long time.

Xuanyin fruit is very rare, except for Qingxuanzong, other families may not have cultivated this elixir, and it may take decades to gather a furnace of elixir.

After refining dozens of furnaces of locust spirit dispersion, Zhang Zhixuan's alchemy level has been greatly improved, and he also has relatively rich experience in refining third-order spirit pills.

The only trouble with refining the Miao Zhen Pill was that the time for refining the pill lasted for a long time, and it took a full twenty-four days.

For such a long time, without the Earth Fire Alchemy, even if Zhang Zhixuan's mana was not lower than that of the foundation level cultivator, he also felt a heavy pressure.

However, it is very troublesome to build an alchemy room, and it is necessary to ask the Purple Mansion Period monks to open up the fire veins, this project takes three or four years, and it is not a matter of the Purple Mansion Period Monks, so they are not willing to delay their precious time to help you.

In the entire five major families, except for the Wu family of Yanlaifeng, which has an alchemy room, which has three fire holes for alchemy and refining, other families do not have such conditions at all.

When Zhang Chuyun's ancestor was alive, the Zhang family did not entrust him to open up the fire hole, and if he missed the opportunity, there would be no follow.

Maybe it will be necessary to wait for Qingchan, Hanyan, and Zhang Zhixuan to open up the Purple Mansion before they can be sure to build an alchemy room and improve the conditions of the family.

Zhang Zhixuan prepared everything, and even entrusted Han Yan to spend three hundred good deeds, and purchased a third-order mid-grade Qi Replenishing Pill from Qingxuanzong to quickly replenish mana and restore vitality as a follow-up hand, and then started alchemy.

Zhang Zhixuan opened the Xuanyang Furnace, first refined several furnaces of second-order elixir, warmed the alchemy furnace, and then put the elixir into the alchemy furnace and began to warm the elixir.

The most difficult level of Miao Zhen Dan is the warm cultivation pill liquid, this process takes twenty-one days, and in these twenty-one days, the monk needs to enter mana all the time without sleep, and he can't leave for a minute or a second.

Such a painful process, not a monk with profound mana, could not persist at all. Moreover, Zhang Zhixuan did not have the firepower provided by the earth fire, so he could only use the True Fire Alchemy Pill of the Cultivator in the Foundation Building Period, which increased the difficulty even more.

If Zhang Zhixuan was not a Fire Spirit Root Cultivator, and he was good at using Samadhi True Fire, even with his strong mana, he would not dare to try this kind of thing.

Time passed minute by minute, and Zhang Zhixuan's strong mana gradually began to dry up, and on the eleventh day, Zhang Zhixuan's mana had already consumed most of it.

The mana is less than thirty percent, and every minute and every second is torment for Zhang Zhixuan, a third-order mid-grade qi replenishing pill can only restore thirty percent of his mana, but looking at the current situation, even if he takes the third-order qi replenishing pill, Zhang Zhixuan will not last for twenty-four days of alchemy.

Faced with this difficult situation, Zhang Zhixuan could only rack his brains to think of ways to save mana, and began to slowly reduce the consumption of true fire in his body, hoping to maintain it for a longer time.

If the strength of the true fire in the body is weakened, the temperature of the alchemy furnace may not be enough, and there will be a trace of residue in the pill liquid, and when it comes to the condensation, it will condense into a very toxic waste pill.

Zhang Zhixuan is very aware of this hidden danger, but now he has no choice, if he doesn't do this, this time the alchemy will be a complete failure, and the more than 1,000 spirit stones invested will be lost.

With such a big loss, even a veteran foundation building monk like Zhang Zhixuan will suffer for several years.

Although the family's finances have improved now, for the sake of long-term consideration, the money given to Zhang Zhixuan and other monks in the foundation building period has not changed.

They are in the family's fortune, no more than three hundred spirit stones a year, but Zhang Zhixuan has alchemy, Qingchan has talisman making, both of them have rich experience in alchemy and talisman making, and they can earn a lot of family good deeds every year, and their annual income adds up to more than 1,000 spirit stones, which has exceeded the vast majority of foundation building monks.

With the family's spiritual veins providing spiritual energy, Zhang Zhixuan and the others do not need to consume additional spirit stones to cultivate, in addition to consuming some material resources, the two of them can accumulate a large amount of resources every year.

Moreover, Zhang Zhixuanqing and Chan both have a high-grade spirit stone, although they are all invested in the family, they have not seen the money back for the time being.

However, the family's finances have begun to improve, and from a year or two later, there will be a large amount of spirit stones to repay the accounts.

Reducing the intensity of the true fire, Zhang Zhixuan could only be more careful, increasing his divine sense all the time, paying attention to the details in the alchemy furnace.

Zhang Zhixuan's Samadhi True Fire has been cultivated for thirty years, and although the Heavenly Fire Golden Sword Fight technique is incomplete, its power is indeed extraordinary, and it is no less than the exercises passed on by disciples of this sect like Qingxuanzong.

Even if Zhang Zhixuan reduced the strength of the true fire by a little, he still had enough firepower to warm the elixir.

In this way, relying on weakening the strength of the true fire, Zhang Zhixuan persevered for another six days.

Finally, on the night of the seventeenth day, when Zhang Zhixuan felt that his mana was about to run out, he took the third-order qi replenishing pill that he had been preparing for a long time.

The effect of the third-order middle-grade qi replenishing pill was really extraordinary, and as soon as Zhang Zhixuan took the elixir, a trickle of mana was incorporated into his dantian.

Because Zhang Zhixuan's mana was no less than that of the first-level cultivator of the foundation building, the effect of this elixir was not as good as expected, and it only restored two percent of his mana.

With these two percent of mana, Zhang Zhixuan finally completed the most difficult step before his mana was about to run out, warming up the pill liquid.

After successfully warming the Dan liquid, Zhang Zhixuan did not need to continue to urge the true fire, he could rest for a day or two, wait for the Dan liquid in the alchemy furnace to cool down slowly, and prepare the Ning Dan after three days.

Those who travel a hundred miles are half ninety, although they have completed the most difficult level, Zhang Zhixuan will not be careless, and carefully stare at the Dan liquid in the alchemy furnace.

After the Dan liquid slowly cooled, Zhang Zhixuan began to urge the mana, so that the Dan liquid in the alchemy furnace slowly rotated, and the Dan liquid shrank slightly with each revolution. Slowly, these Dan liquids gradually condensed into three solid dots, and Zhang Zhixuan already knew at this time that the Ning Dan step had been completed for the most part.

Zhang Zhixuan made a trick violently, opened the top cover of the alchemy furnace, and a rich fragrance rushed out of the alchemy furnace, smelling this breath of Dan Qi, Zhang Zhixuan suddenly had a feeling of refreshment and vitality.

He didn't dare to delay a little, took out three jade bottles containing the elixir, and immediately made a pill harvesting method, and the three spiritual lights were also ingested into the alchemy furnace, and the three elixirs inside were collected.