There are a total of eight kinds of prescriptions for the four realms of imperial qi.

Of these eight kinds of medicinal prescriptions, six of them are pills taken by martial artists of the Inner Qi Realm, and the other two are pills taken by martial artists of the Open Pulse Realm, and as for the pills of the Tongqi Realm and the Innate Realm, there is none of them.

Even if there is a general knowledge realm and a pill of the innate realm in the medicine department, it will not be easy for people to get and watch.

With all these prescriptions in mind, Chen Xuan continued to look for the pills that could be exchanged for blood beads.

"Found it!"

After a while, Chen Xuan found the Blood Bead Pill Formula.

In this pill, a total of forty-three different medicinal materials were recorded, which matched the number of medicinal materials needed to exchange blood beads that Chen Xuan had analyzed.

It's just that the various medicinal materials recorded on this Dan prescription are more detailed.

After having the Danfang, Chen Xuan only needs to take the two catties of medicinal materials recorded on the Blood Bead Danfang, and he doesn't need to spend time trying to test it over and over again, which undoubtedly saves a lot of time.

In addition, Chen Xuan also found several books of alchemy masters' experience in refining and exchanging blood beads.

After reading all these experiences, Chen Xuan became more and more confident in refining the blood exchange beads.

If he was only three or four percent sure before, then after a month of study in the Medical Pavilion and reading these books of blood bead refining experience, then he was seven or eight percent sure that he would be able to refine it successfully in one go.

Evening.

Chen Xuan quietly left the medical department and returned to another home.

The courtyard of Zhongyuan Lane before, surrounded by spies from major forces, was temporarily uninhabitable, so a few days ago he rented a courtyard again through Yirong to Yaxing.

Finding that no one was following him along the way, Chen Xuan returned to the newly rented home a few days ago, and then changed his clothes and went out after transferring his muscles and changing his bones.

Two quarters of an hour later.

Chen Xuan came to a well-known pharmacy in Fucheng.

This pharmacy is called 'Treasure Pavilion'.

Among the pills used to exchange blood beads, several of them are relatively rare and precious herbs.

Although these precious herbs are not as valuable as the elixir, they are worth thousands of taels, or even tens of thousands of taels of silver, but they are not available in ordinary pharmacies, and the prices are more than a hundred taels of silver.

"What do you want to buy?"

Seeing Chen Xuan walk in, he immediately greeted him with a spiritual man.

"Is there any Blood Yuan Fruit?"

Chen Xuan didn't beat around the bush and asked directly.

The Blood Yuan Fruit is one of the precious herbs used to refine the Blood Exchange Beads.

In this world, mundane herbs are divided into three levels: ordinary, fine and rare.

Ordinary herbs are more common herbs, while high-quality herbs are relatively rare and have high value, such as ginseng, Polygonum multiflori, etc., which are all high-quality herbs, worth dozens of taels of silver.

As for the rare herbs, the price is more than one hundred taels of silver.

For example, 100-year-old ginseng, 100-year-old Polygonum multiflori, etc., all belong to rare herbs, and above the rare herbs, it is an elixir that absorbs the aura of heaven and earth.

"If you want to buy the Blood Yuan Fruit, then you have come to the right place." The guy nodded, and then said: "The Blood Yuan Fruit is a rare herb, the value is extraordinary, there are not many pharmacies in the city that can buy the Blood Yuan Fruit, our Treasure Pavilion is one of them, I don't know how many Blood Yuan Fruits your guests want?" ”

"One is enough."

Chen Xuan said calmly.

"Okay, you wait, I'll go and ask the shopkeeper at once."

The fellow immediately entered the second floor of the Treasure Pavilion.

If it's an ordinary herb, the guy will be able to call the shots.

But the Blood Yuan Fruit costs a few hundred taels of silver, so it is not something that the guy can call the shots, and it needs the consent of the shopkeeper to sell it.

It didn't take long for the guy to go downstairs, came to Chen Xuan with a box in his hand, and slowly opened it: "This is the Blood Yuan Fruit, you can check it." ”

"No problem!" Chen Xuan glanced at it, then smelled the smell of the Blood Yuan Fruit, and knew that it was the real Blood Yuan Fruit, and then asked, "How much?" ”

"The Blood Yuan Fruit is a rare herb, rare and rare, three hundred and ten taels of silver each."

The guy smiled.

"Three hundred and ten taels of silver!"

Hearing this, Chen Xuan nodded slightly.

The price of the Blood Yuan Fruit is around three hundred taels of silver.

Qizhen Pavilion sells for three hundred and ten taels, which is also a normal price, maybe it will be cheaper on the black market, as long as about two hundred and fifty taels, you can buy it, but the black market is mixed, and if the wealth is exposed, it is very likely to be targeted by some people, causing unnecessary trouble, or it is safer to buy it in a regular pharmacy.

Although the price is a little more expensive, it can also save a lot of trouble.

Immediately, Chen Xuan took out a silver ticket of three hundred and ten taels of silver and handed it to the guys of the Treasure Pavilion.

"Do you need any other herbs?"

The guy took the silver ticket and asked with a smile on his face.

"No, I don't."

Chen Xuan put away the Blood Yuan Fruit and left the Treasure Pavilion.

Although he still needs to buy several rare herbs, he won't buy them all at the Treasure Pavilion.

If all the herbs were bought in one pharmacy, it would be easy for people to know that he was refining blood beads.

In the Fucheng, in addition to the Treasure Pavilion, there are also the Hundred Herb Pavilion, the Lingzhi Hall and the Imperial Medicine Building, all of which are medicine shops with the same name as the Treasure Pavilion, and all have rare herbs for sale.

Among the precious herbs for refining and exchanging blood beads, the blood spirit fruit is the most expensive, and the rest of the rare herbs, each of which can be bought for more than a hundred taels of silver.

After buying all the medicinal materials, Chen Xuan returned home to restore his original appearance, and then went to the medicine department refining pharmacy.

He is now a student of Master Lin Hong, the head of the Department of Medicine, and he is also a senior alchemy physician, so he has a special alchemy shop in the Department of Medicine, whether it is a Dan furnace or a refined charcoal for burning fire, it is the best choice.

Coming to the alchemy pharmacy, Chen Xuan closed his eyes, and the experience of refining and exchanging blood beads written by several alchemy masters appeared in his mind, and he went through all the steps in his mind.

A quarter of an hour later, Chen Xuan lit the charcoal and began to burn the fire.

This is followed by adding water and medicine...... Every step is like going through it countless times.

Although today was Chen Xuan's first time refining blood beads, in his mind, he had already practiced dozens of times, so when he officially started refining, the alchemy techniques he showed would be so proficient.

Little by little, time passed.

Three hours passed, Chen Xuan added water several times halfway, and Huo Hou also adjusted it several times, and the refining of the blood beads finally reached the final 'solid' stage.

Another quarter of an hour passed.

A rich medicinal fragrance permeated from the vent of the alchemy furnace.