The main hall of the Yanxiao Palace happened to sink into the depths of the underground spiritual veins, the rich aura and closed environment created incomparably superior cultivation conditions for Lin Feng, he returned to the main hall, rearranged a solid magic circle, and began to prepare for entering the retreat.

The first thing Lin Feng did was to ripen the Candle Flame Fruit obtained from the Dabi Canyon, and the Candle Flame Fruit obtained was limited to the small ripe realm, because the Candle Flame Fruit above the medium ripe level could only be controlled by the mana of the Yuan Infant Realm, and for Lin Feng, the Candle Flame Fruit with a small maturity level was enough to dissolve all the miscellaneous elements accumulated in the Yuan Shen.

In fact, even if it is a candle flame fruit in the small ripe realm, its powerful medicinal power is not something that ordinary monks in the Dan stage can control, only after reaching the peak of the Dan stage can they have the ability to eat the medicinal power of the candle flame fruit in batches, and for the monks of the Yuan Infant Stage, it is difficult for the small ripe candle flame fruit to be effective, so the small ripe candle flame fruit seems to be the exclusive elixir of the ninth-layer monks in the Dan stage.

Lin Feng's realm was still one step away from the ninth layer of the Dan Formation Period, with such a mana strength, ordinary monks would never dare to easily try the powerful power of the Candle Flame Fruit, but under the effect of the Mixed Yuan Orb, Lin Feng's mana purity was far higher than that of ordinary monks of the same level, and the strength of his body veins was also more tenacious.

The most important point is that Lin Feng had frequently used the close devouring of the immortal net before, and a large number of stubborn miscellaneous elements had accumulated in the Yuan Shen, and only a top-grade elixir like the Candle Flame Fruit could clear them out, so the Candle Flame Fruit was the only choice that could not be replaced for Lin Feng.

After the candle flame fruit ripened, in the next time, Lin Feng began to refine a kind of elixir of Peiyuan Solid in the late stage of the Formation Pill, it was the Shengyuan Pill!

Shengyuan Dan is a kind of high-grade elixir recorded in the Qingdan Secret Sutra, among all the elixirs of the Yudan period, especially the Peiyuan Guben elixir in the later stage of the Yudan, Shengyuan Dan is one of the few top-grade elixirs.

The formula of Shengyuan Dan is relatively complex, and the various main drugs involved in it are becoming increasingly rare in the cultivation realm, Lin Feng has paid attention to collecting them in Nanyue, Extreme West, Yulong, Yiyu and other places, and it is precisely because of this long-term unremitting accumulation that he finally got all the formulas.

Through such a wide range of geographical spans, all the formulas of the Shengyuan Pill have been gathered, which shows that the Shengyuan Pill has rarely existed in the cultivation realm, and this kind of elixir that exists in name only in the cultivation realm has gradually been forgotten by the monks, only some major sects of alchemy, and a few ancient books, there are still records about it.

Although the materials of the Shengyuan Pill had been gathered, Lin Feng had refined it into a pill and accumulated it into a certain amount, but it had taken several months, and then he continued to urge the immortal net to ripen a sufficient number of double-seeded black dragon sunflower for the blood demon!

For the current Blood Demon, the medicinal power of the Twin Seed Black Dragon Aoi is enough for it to break through the bottleneck of cultivation and impact, due to the reason of Wu Zhu's true magic skills, the advancement of the Blood Demon is no longer limited to absorbing the Yin Spirit or the Monk's Yuan Shen, but can be the same as the monk, through the powerful medicinal power to purify the strength of the Spirit Yuan in the body, so as to achieve the purpose of impacting the bottleneck.

Compared to Lin Feng, the time of the blood demon is much more abundant, almost every time it is devoured, it can enter the Sumeru Illusion Ring to refine with all its strength, and the cowardice is also more frequent than Lin Feng, and the miscellaneous elements in the body are rarely accumulated, and through this accumulation in the Bloody Domain, a large number of spirit elements devoured by the blood demon have finally reached a breakthrough limit, although it is still far from being a baby, but the seventh-order peak realm is only one step away, for ghosts and demon beasts, this step is crucial, and the time required is often extremely long.

After the refining of the double-seeded black dragon sunflower was completed, Lin Feng directly sent it to the Sumeru Illusion Ring, and under Lin Feng's instructions, the blood demon devoured the black dragon sunflower and refined it, and first entered the retreat.

Next, Lin Feng held his breath and condensed, urging the Quenching Dragon Technique to enter the realm of emptiness, and then swallowed the Candle Flame Fruit, and began a long process of timidity.

The medicinal power of the candle flame fruit decomposed in Lin Feng's body, it was like a candle flame that continued to burn, as Lin Feng's mana flowed, the candle flame continued to scorch the impurities in his primordial spirit, although the scorching speed was slow, it could only burn a spot the size of a needle tip each time, but it was gradual, and Lin Feng's primordial spirit, after each frightening spot, would become stronger.

The medicinal power of the Candle Flame Fruit lasted in Lin Feng's body for several years before it gradually subsided, and the miscellaneous elements in Lin Feng's body were finally completely cleared by it, and in the next time, Lin Feng struck while the iron was hot, swallowed the well-prepared Shengyuan Pill into his body for refining, and with the help of the strong Yuanyuan Pill's powerful Yuan-aiding effect, he went all out to impact the ninth layer bottleneck of the Dan Formation Period!

A few years have passed again, the dusty palace of Yanxiao Palace has been in silence, Lin Feng is like a plastic sculpture, more than ten years like a day has not moved, from the moment he retreated, twelve years have passed at this time, it is precisely the beginning of a week.

In fact, the Candle Flame Fruit saved Lin Feng a lot of time, otherwise, with the strength of the miscellaneous elements accumulated in his body, it would not be possible to be easily cowardly like this, let alone be completed in just a few years, without enough elixir, the time of the Demon Sect cultivator's cowardice would often take decades or even hundreds of years.

Some miscellaneous elements that are extremely difficult to get rid of, if they cannot be cleared out in time, will be more and more closely combined with the primordial spirit, forming a miscellaneous spot that cannot be removed for a lifetime, which will not only greatly affect the progress speed of the monk, but also be the source of the breeding of demonic barriers, especially when it hits the bottleneck of the great realm, the threat it causes will be fatal.

The Candle Flame Fruit is known as one of the three holy medicines of the Demon Sect, it naturally has unique medicinal power, its cowardly effect is extraordinary, it is well-known in the cultivation world, Lin Feng is in the realm of the Dan period, using such a powerful elixir for cowardice, the effect is naturally obvious.

After twelve years of retreat, Lin Feng, who had been in a petrified position, finally opened his eyes, and the spiritual power in his body was suddenly stimulated, and the powerful spiritual pressure shook out the dust on his body, flying up and down around his body.

At this time, Lin Feng's realm finally completed a breakthrough, and after the cowardice was completed, he worked hard to refine the Shengyuan Pill and constantly hit the bottleneck, and the strong origin mana was like a surging river, completely breaking down the rank barrier, making him enter the ranks of the ninth layer of the Dan Formation Period!

With the assistance of a large number of spirit pills, Lin Feng's realm was quickly consolidated, but the blood demon did not move in the Sumeru Illusion Ring, Lin Feng no longer cared about it, and began to refine several shotmine bombs, as well as some left-path materials that could be used at any time, and then walked out of the main hall, with the help of powerful underground spiritual veins, urging the immortal net to ripen a void spirit bamboo!

The Void Spirit Bamboo is a necessary material for the Void Yuan Sword, and it is also the key to Daze Jianzhen, but Lin Feng's current strength still can't urge Daze Jianzhen, and the Void Spirit Bamboo has no effect on him for the time being, but after the Void Spirit Bamboo is ripe, the accompanying Void Spirit Bamboo Shoots are precious cultivation materials!

The Void Spirit Bamboo Shoot is equivalent to the existence of the best Void Spirit Stone, and Lin Feng's Void Spirit Power can get an endless stream of supplements from the Void Spirit Shoots, so far, Lin Feng has never seen it, there is no monk who can resist the impact of the Void Spirit Power, although the Void Spirit Power cannot be fatal with one blow, but the deterrence caused is undoubtedly very amazing, as long as Lin Feng grasps the opportunity, he can surprise the enemy to form a lore.

The only restraint on the void spirit power is the Qi Yuan Heavenly Scripture that Lin Feng got from the Yan Xiao Palace, whether the anti-Yuan Force really exists, Lin Feng still doesn't know, and this is also a point he is very curious about, the cultivation of the Qi Yuan Heavenly Scripture is so harsh, the power it will have in the future is naturally extraordinary, and it is the inheritance of the ancient gods, Lin Feng is indeed full of expectations for this.

From the current point of view, Lin Feng fused the Blue Silk Ice Flame and the Rainbow Sun Fire Black, and with the help of the effect of the Void Spirit Power, he refined the strongest Qi Flame of the Qi Yuan Heavenly Scripture "Qi Yuan Extreme Fire" to the beginning of the world, and the power it possessed had already shocked Lin Feng.

Qi Yuan Extreme Fire's ability to scorch through spiritual power is indeed very powerful, but unfortunately, its inducement is not only extremely mana-consuming, but also slow, it is difficult to form a long-range attack in actual combat, and only in a long-term war of attrition can it be played and used.

If Qi Yuan Extreme Fire wants to advance and upgrade, it needs to continuously consume a large number of attribute extremely anti-attribute elixirs, and it needs to be neutralized with Void Spirit Power, at this stage, Lin Feng can use Ice Scale Cold Bamboo Shoots, Fire Yang Ginseng, and Void Spirit Bamboo Shoots to meet its requirements, when Qi Yuan Extreme Fire is promoted to a certain level, it also needs to add materials with other attributes to increase its Qi nature, even for Lin Feng, it is also a very large financial consumption.

Before the Qi Yuan Extreme Fire was refined to Dacheng, Lin Feng would not have the so-called anti-yuan power, whether the anti-yuan force could restrain the void spirit power, Lin Feng did not dare to speculate, but the ancient gods left this Qi Yuan Heavenly Scripture, which made Lin Feng, who had the void spirit power, quite jealous, so in order to prevent accidents, he took precautions to personally practice this magic trick, in order to return it to him in the future.

And before the Reverse Yuan Force was refined, the Void Spirit Power was still a powerful killing technique that could not be ignored, even if the Reverse Yuan Force could really restrain the Void Spirit Force, it would not be easy to refine the Qi Yuan Heavenly Scripture to the Great Completion, otherwise, the Ancient Protoss would not have left the Qi Yuan Heavenly Scripture in the human world for countless years, and even if Lin Feng had the assistance of the Immortal Net, if he wanted to cultivate the Qi Yuan Heavenly Scripture to the highest achievement, it would take a long time that he himself could not even predict.

The existence of the Void Spirit Bamboo Shoot can not only provide Lin Feng with an endless stream of Void Spirit Power, but also allow the Qi Yuan Extreme Fire to continue to increase, so ripening the Void Spirit Bamboo is an imperative thing for Lin Feng, but the Void Spirit Bamboo is one of the six divine trees in the cultivation realm, the ripening process is extremely difficult, and the spiritual power consumed is incomparably huge, if it were not for the help of this underground spiritual vein in the Yanxiao Palace, the demon pill reserve in Lin Feng's hand would not be enough to successfully ripen it.

And the maturity of each Void Spirit Bamboo will be accompanied by the appearance of several Void Spirit Bamboo Shoots, Lin Feng couldn't help but recall the Miao Garden again while getting a rich harvest, everything he got in the Miao Garden was a gift from the Ancient Dragon Clan, and now Lin Feng is still one step away from getting married, and the mission passed on to him by the Dragon Clan is getting closer and closer to being realized.