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In the past five years, Wu Yan has been in retreat and cultivating, and most of the time he has not cultivated, and his main 'essence' power has been placed on the three classic heavenly books and the Shennong's 'medicine' book brought back from the Liehai Tibetan Scripture Palace.

After several years of painstaking study, Wu Yan asked himself what he had seen and heard on the way to cultivation, and within this nether realm, it should be regarded as extremely extensive. Especially after studying these three heavenly books and a volume of Shennong's 'Pharmacopoeia', compared with the large number of classical books he had read in the Tianzhou Continent before, he had a feeling of sudden enlightenment.

Many things that used to feel ignorant are now clear.

What made him even more excited was that these three heavenly books really had a lot to do with the derivative records in his knowledge of the sea. After he read all the copies of the three Heavenly Books several times, not only did these exercise books be firmly remembered by him, but also the contents of these Heavenly Books were automatically entered into the three ancient books and Dao Yanlu.

If that's all there is, it won't surprise him much. After all, the Gongfa texts recorded in the three heavenly books are all the sect 'sect' canons of the three holy places in ancient times, and the text and content information entered are all common words and thinking habits in ancient times.

There have been great changes between the monks of the present and the ancient monks, both in terms of the words used and in the habits of thinking in understanding and perceiving the way of heaven. If the monks of the present day want to understand these classical texts, I am afraid that they will have to devote great effort and time to consult all kinds of written texts.

Wu Yan completely omitted these unnecessary troubles because of Dao Yanlu. Because, after the contents of those three heavenly books were recorded in the three ancient books, it was as if he had already understood these things, and he didn't need to think too much about them at all, and he could 'fine' and 'penetrate' into their reasoning.

Especially the humane and authentic records that have been successfully refined by his primordial spirit, and their understanding is more 'refined' and subtle.

What's even more regrettable is that because he has been inherited from the three ancient holy land heavenly books, Wu Yan has no trouble understanding the various ancient spiritual 'medicines', spirit grasses, pill formulas, alchemy and other strange contents recorded in the Shennong 'medicine' dictionary.

It is no exaggeration to say that if you talk about the opinions on the various cultivation knowledge and customs of the ancient immortal cultivation world, I am afraid that there is no one in the world who can already match Wu Yan.

In the past few years, Wu Yan has been obsessed with the 'refined' study of ancient alchemy. He has sent people to collect dozens of different alchemy furnaces and alchemy tripods from all over the Sumeru Sea several times, and collected various pills and 'medicine' moniaries for comparative research in ancient and modern times.

After a lot of comparison and exploration, he suddenly found that the alchemy of the world had fallen to an extremely terrifying situation, and it was no wonder that there were fewer and fewer monks who could break through the realm with the pill'.

From a certain point of view, for those monks with outstanding talents, even if they do not rely on the assistance of the pill 'medicine', they can easily cross the realm barriers, and the decline of alchemy does not have a great impact on them. But for those monks with ordinary talents, or even very poor, it has an immeasurable impact.

Nowadays, there are only a very few monks who can break through the shackles of the realm, bravely 'refined' all the way, and cultivate to the highest and profound realm, and most of them are monks with excellent spiritual root talents. And the vast majority of monks with three spiritual roots, four spiritual roots, and even five spiritual roots, if they do not rely on the assistance of foreign pill 'medicine', it is very difficult to even build a foundation, let alone form a pill and condense a baby.

In ancient times, it was not unreasonable to advocate the art of external pills, to use foreign alchemy, and to assist in impacting the realm with the help of foreign pill 'medicine'. Because the qualifications of the monks in ancient times were even worse than those of the current cultivators in the immortal cultivation realm, but in the ancient times, the monks who could cultivate to the deep realm of 'refinement' were many times more than now.

In today's immortal cultivation world, whether the monks are refining magic weapons or refining pills, they all rely on the inner pill technique, and use the true fire or pill fire cultivated in their bodies to condense the magic weapon and refine the pill 'medicine'. Only when refining those low-level pills would they use the spiritual fire of external objects. This certainly improves the 'jing' quasi-control of the Dan Yuan and spells in a certain way, but it also exacerbates the consumption of one's own mana and the 'Jing' Yuan, and in vain allows one's 'Jing' Yuan to leak out so much that it needs a greater pass to make up for this loss, which is even more than worth the loss.

As we all know, in the realm of cultivating immortals, the evaluation of the quality of Dan's 'medicine' is divided into three grades, four grades, and twelve grades.

The inferior grade is the spirit level pill 'medicine', which is divided into four grades: lower, middle, upper and extreme. The medium is an immortal-level pill 'medicine', which is also divided into these four products. The top-grade is a god-level pill 'medicine', which is also divided into these four products.

Among these twelve-order pills, the spirit-level pill 'medicine' is suitable for monks below the god transformation stage, the immortal-level pill 'medicine' is suitable for monks from the god transformation stage to the merger stage, and the god-level pill 'medicine' is suitable for monks who have crossed the Mahayana tribulation.

In today's human realm of immortal cultivation, there is no one who can refine the immortal-grade pill 'medicine'. The immortal-grade pills taken by those powerful monks were all obtained from the secret realm of the ancient ruins.

However, when a monk hits the Yuan Infant Stage realm from the Great Perfection realm in the late stage of the elixir, it is said that as long as he can have a suitable top-grade elixir, he can greatly increase the chance of success in rushing through the level. But this is only for those monks who have better spiritual root qualifications.

For those monks whose spiritual root qualifications are not very good, or even very poor, then they must use the corresponding immortal-level lower grade pill 'medicine' to support them to tide over this danger.

It is said that with Wu Yan's qualifications for the hidden spirit root, it is considered excellent, but because the exercises he cultivates are too special, he also needs an immortal-level low-grade pill 'medicine' to break through successfully.

The two Sword Yuan Pills in his hands were actually immortal-level pills that were suitable for sword cultivators to take Chongguan.

It's just that these two immortal-level lower-grade Sword Yuan Dan were used by Wu Yan to develop and refine the new Sword Yuan Dan. When he got these two pills, he made up his mind that he would only take them if he had to refine the same pills, otherwise, he would never take them.

Compared to him, his three senior brothers actually needed this kind of immortal-level lower-grade Sword Yuan Dan more.

In the past few years, he has continued to try to refine various different pills based on the outer pill techniques he comprehended from Shennong's 'medicine' codex, but unfortunately, he has not been able to refine a single of the immortal-level low-grade pills, or the spirit-level top-grade pills.

The reason for the emergence of this situation is nothing more than the lack of various utensils and materials suitable for refining this pill'.

Shennong's 'medicine' dictionary makes it very clear that if you want to refine the spirit-level pill 'medicine', a spirit-level alchemy furnace is a must, two different stable spirit-level flames of 'yin' and yang, and two different spirit-level water liquids of 'yin' and yang are also necessary.

Over the past few years, Wu Yan has been shuttling between the Earth Yan Peak and the True Water Peak, but he has successfully refined the spirit-level 'yin' fire contained under the Earth-Yan Peak, and has also successfully refined the spirit-level True Yang water in the True Water Peak.

But even so, he still needs a stable spirit-level yang fire and a spirit-level ****. With these necessary auxiliary spiritual materials, there must also be a spiritual-level alchemy ding furnace.

Ordinary Ding furnace, I'm afraid that before the Dan 'medicine' is successfully refined, it is very likely that the furnace will be fried due to the 'intermingling' use of different spiritual fires and spiritual water, how can it be refined into a spiritual pill?

It's a pity that over the past few years, he has sent reliable disciples to search all over the Sumeru Sea Immortal Cultivation Realm, but he has not been able to purchase a suitable spirit-level Dan furnace or Dan Ding.

The large amount of residue of the Dan Furnace Danding that had just been piled up on the ground in the 'cave' mansion was the best proof of this.

What's even more pitiful is that the Baicao monk, who is known as the master of alchemy in the Sumeru Sea, a Dharma Arhat monk who was named the Supreme Elder in the Sumeru Sect, only has a spirit-level Dan furnace in his hand, and he is still collected by him as a treasure, and he never lets outsiders take a look.

Not to mention the harsh conditions for refining the Immortal-grade Pill 'Medicine'.

Without an immortal-level Ding furnace, without an immortal-level 'yin' yang flame fire, and without an immortal-level 'yin' yang water liquid, it is impossible to refine an immortal-level pill.

He has immortal-level water liquid, which is the Yuehua spiritual liquid. But over the years, in order to remove the toxins accumulated in the body for the old man Ji Guitian, all the Yuehua spiritual liquid in his hands has been used up.

In fact, as long as there is a suitable Ding furnace, the corresponding water liquid does not have to worry. Because, whether it is a spirit-level Ding furnace, an immortal-level Ding furnace, or a god-level Ding furnace, they all have the special function of collecting the corresponding spiritual water.

When he learned this, Wu Yan once suspected that the Heaven and Earth Flood Furnace within his knowledge of the sea was not just a soul-suppressing artifact, but also very likely the Dan Furnace that Dao Ancestor used to refine the elixir back then.

Being able to collect the Yuehua Spirit Liquid and absorb the most 'refined' fairy green loam in the soil is itself an immortal-level Dan furnace that can only have the effect of magical powers.

But the strange thing is that when Wu Yan learned the immortal-level imperial tripod recipe recorded in Shennong's 'medicine' dictionary, he found that there was no reaction at all when he used it, but he found that the heaven and earth in the sea of knowledge had no reaction at all.

This made Wu Yan even suspect that the Heaven and Earth Flood Furnace was not an immortal-level Ding Furnace, but a God-level Ding Furnace?

However, the highest recorded in Shennong's 'medicine' book is only the immortal-level imperial tripod recipe and the immortal-level fire control technique, if you want to refine the immortal-level pill 'medicine', you must find a suitable immortal-level Ding furnace and immortal-level flame fire.

After repeated checks and combing, Wu Yan found that if he and Xuan Yazi wanted to impact the Yuanying realm, they had to take an immortal-level lower grade pill 'medicine' named "Rongyuan Dan" in ancient times to have a great chance of impacting the Yuanying realm.

Of course, for Wu Yan, if he didn't have this immortal-level inferior "Rong Yuan Dan", he could also impact the Yuan Infant realm by taking the Sword Yuan Dan.

The Dan recipe of Rong Yuan Dan and Jian Yuan Dan is also recorded in Shennong's 'Pharmacopoeia', and even the method of refining is recorded in detail.

It's a pity that there are no pill recipes and alchemy methods, but the various immortal-level materials for refining these two pill 'medicines' are all things that only exist in ancient times, and they have long been extinct in the world, where can he find them?

Maybe only those space fragments of some ruins handed down from antiquity will be there, but where can he find such broken space fragments?

Maybe there will only be one in the core secret hall of the Dragon Palace Water Mansion or the Daode Palace Secret Realm? In the past few years, Wu Yan has also repeatedly thought about this possibility. After all, such extinct ancient spiritual objects can only be found in those ruins and secret realms.

If this speculation is true, then he has nothing to hesitate about, and going to the Dragon Palace Water Mansion in the Abyss Sea is the first choice for this expedition.

He has black dragon scales and a green bull golden order. Since the two secret realms will be opened at the same time, it also means that as long as he can enter the Dragon Palace, he will have the opportunity to enter the core secret hall of the Daode Palace-32523+dsuaahhh+24475977->