Ding Qi had used spirit grass to refine a lot of pills before, but he didn't know much about using demon beasts for alchemy.

He thought about the matter of alchemy, and seemed to have made a decision.

Soon after, Ding Qi left the cave mansion and walked towards the closest place to him, the Yunluo Spirit Vein's book storage place.

He planned to check out the books related to using demon beasts to refine pills.

After having some understanding of this aspect, we decided how to dispose of this demon beast corpse.

Since Ding Qi left the cave, it has been a few days. It wasn't until the fifth day that Ding Qi returned to the cave.

However, at this time, Ding Qi was quite happy after returning to the cave.

In the past few days, he has read the entire Yunluo Spiritual Vein and several places where the classics are stored. Yunluo Lingmai, books on this subject, is quite abundant.

It is worthy of being the place with the largest collection of classics in the entire Cangbei Cultivation Domain in addition to the big sects.

After reading these books carefully, Ding Qi also has enough understanding of the things in terms of pills. After these pills are refined, most of them are used to increase their strength.

The elixir for innate cultivators to increase their strength has not been easy to refine. The Juling Pill that Ding Qi is taking now needs to use several centuries-old herbs.

When it comes to the foundation building period, it is even more difficult to find pills that can be used to increase strength.

The foundation building demon beast in Ding Qi's hand, according to the information he got from the book, could refine the pill that the foundation building monk took and increased his strength.

Ding Qi had already planned to do this at the beginning.

However, later, after Ding Qi read about a method of refining pills called 'Yi Nian Dan', Ding Qi no longer planned to do so.

This elixir called 'Yi Nian Dan' is not the most common, power-increasing elixir.

Its function is to allow the innate monk to swallow this elixir within half an hour after swallowing it. Forcibly arouse a trace of consciousness. It's not just that because there is only a trace of it, and it can't be revealed from the body, it has almost no effect on ordinary innate cultivators.

However, for the monks who have completed their innate skills and want to build a foundation, the meaning of this elixir is completely different.

During the period when the innate monks entered the foundation building period, under the huge leap in the realm, both physically and spiritually, they would be greatly improved.

If before the foundation is built. The innate monk is taking the next Nian Pill, so with the opportunity of realm ascension, a trace of divine thought temporarily born in the monk's body will not disappear during the time of entering the foundation building realm.

This allowed the monk to have divine consciousness immediately when he succeeded in building the foundation.

Ordinary foundation building monks need to wait for two or three years. in order to condense the divine sense.

Not only that, but because of the Nian Dan, the divine consciousness that was born was at the time of foundation building. After the catalytic relationship, after the foundation building was successful, the strength of the monk's divine consciousness was actually equivalent. A monk who has been building a foundation for a year or two has the level of divine consciousness he has.

But that's not all about that.

At the time of foundation building. After swallowing the next Nian Dan, the monk's divine consciousness will eventually be almost a point stronger than that of a monk of the same realm.

Although it is only one more point, when fighting with opponents in the same realm, this point is likely to directly determine the gap between life and death.

This is the reason why this nenedan is so precious to monks who want to build a foundation.

Ding Qi was in the three classic pavilions of the Yunluo Spirit Vein, and after thoroughly inspecting it, he was in the pill shop again, knocking on the side to inquire about the demon beast materials and the situation of refining the pill, and finally he had already understood how to use this foundation-building demon beast.

Refining a Nian Dan is the most suitable choice for the current Ding Qi.

"Refining a Nian Dan, although the foundation building demon beast is the most important thing, but it still needs some spirit grass, and even more needs a special Dan furnace. Ding Qi thought of the refining method of Yi Nian Dan, and thought in his heart.

Refining a Nian Pill requires a lot of precious auxiliaries. These spirit herbs and elixirs will probably use more than two hundred magic crystals to be able to complete them.

Fortunately, Ding Qi has enough magic crystals on his body, otherwise even if he has a foundation building demon beast, Ding Qi would not be able to match these things.

The rest is the Dan furnace for refining pills.

To refine the Yi Nian Dan, one needs to use a Dan furnace called the Yin Fire Furnace.

Ding Qi doesn't have this kind of thing. However, in the magic weapon shop, you can buy it for only a few dozen magic crystals.

"It seems that we are going to the forbidden land of the demon realm and collect some yin fire. ”

Yi Nian Dan needs to be refined with a yin fire, but ordinary flames cannot.

In the world of cultivating immortals, if you want to collect yin fire, the most common way is to go to the forbidden place of the demon realm to collect it. The Yin Spirit of the Demon Realm Forbidden Land is extremely heavy and can be easily collected.

The general yin fire stove also has the function of collecting yin fire.

Thinking of this, Ding Qi quickly came out of the cave mansion, intending to prepare for refining Yi Nian Dan.

He purchased a Dan furnace and some commonly used medicinal herbs in the Yunluo Spiritual Vein, but he didn't buy all the things he needed in the Yunluo Spiritual Vein.

Refining a Nian Pill costs a lot. Buying everything in the same area will inevitably attract attention.

Ding Qi planned to go to the forbidden land of the Demon Realm and collect the Yin Fire, and then go to several other relatively small scattered cultivation gathering places to buy the remaining spirit grass respectively.

Ding Qi drove Shui Lingyun and rushed towards the forbidden land of Huaiguo's demon realm at high altitude at a high speed.

He looked at it with great interest, the Yin Flame Furnace he had bought from the Yunluo Spirit Vein not long ago. This Yin Furnace looks like a four-legged square tripod, with a pale cyan exterior and spiritual patterns on it, which looks extremely delicate.

When it didn't get started, this Yin Flame Furnace was only the size of two fists. However, once it is activated, the Yin Flame Furnace will become extremely large, several feet long.

In the forbidden land of the Demon Realm, as long as Ding Qi chooses a suitable place and urges the Yin Fire Furnace, he can easily extract the Yin Fire from the Yin Spirit Ghost Qi little by little, and gather them into the Dan Furnace.

A day later, Ding Qi appeared in the forbidden land of Huaiguo's demon realm. At this time, Ding Qi put away the water spirit cloud and planned to enter the central area of the Demon Realm Forbidden Land.

In the outer area of the Demon Realm Forbidden Land, although Yin Fire can also be collected, due to various Yin Spirit and Ghost Qi, it is far less than the inner area of the Demon Realm Forbidden Land. It took a lot of time for Ding Qi to collect enough for his own use.

Therefore, Ding Qi chose to enter the central area of the Demon Realm Forbidden Land and collect it.

This kind of place, unlike the core area, will encounter too difficult demon beasts, and has enough speed to collect Yin Fire, for him, it is very suitable. (To be continued......)