Several elixirs in a row were extremely bizarre, either upgraded versions of previous ones or elixirs like the Myriad Poison Pill. Only three were proper, basic Heaven-Tier elixirs.

Immortal Qing Fan was too lazy to say more. Although these elixirs were strange, it was undeniable that they were indeed Heaven-Tier elixirs, meeting her requirements.

After that, she personally lectured Jiang Xuan, explaining the Dao of elixirs. With a powerhouse who fully grasped the Grand Dao of elixirs lecturing, Jiang Xuan's progress in the Dao of elixirs was rapid.

After a month, his alchemy skills had transformed again. According to his estimation, after listening to Immortal Qing Fan lecture one or two more times, he would break through to the Returning Void Earth Immortal realm, which would definitely be enough to refine Immortal elixirs.

After staying in the Hundred Herbs Hall for four months, he finally returned to the Lieshan Residence. Even though he hadn't lived there for a single day, he still felt extremely affectionate towards it.

After all, he could finally rest and temporarily not refine elixirs anymore.

…

Inside the Lieshan Residence, Jiang Xuan's five followers had already taken care of everything. Without Jiang Xuan, they could only cultivate on their own and had even gone to the Immortal Devil Palace to learn secret techniques.

Jiang Xuan himself hadn't even been there yet, so he thought about asking Immortal You Zhu to accompany him. You Zhu had previously learned a secret technique on the third floor of the Immortal Devil Palace, but that was the limit of what could be learned through legitimate means. To learn higher-level techniques, other methods were needed.

In the first floor of the Immortal Devil Palace, at first glance, there was a row of tall bookshelves. The bookshelves were filled with countless books, and on them were the words: "Clean the first floor of the Immortal Devil Palace once without using mana or divine power, and you can choose any one."

"That's really simple."

Jiang Xuan said. Although the first floor of the Immortal Devil Palace was vast, even without using mana or divine power, a cultivator's physical fitness was enough to clean it once a day.

"It's simple, and it's only the first floor. The cultivation methods are at least Immortal-Tier, and the secret techniques are definitely powerful!"

You Zhu said with amazement. Immortal-Tier Qi refining methods might not be too valuable, but to be able to obtain one by simply cleaning the first floor of the Immortal Devil Palace was unimaginable.

Not to mention the other secret techniques, many of which were created by Returning Void Earth Immortal experts at the peak. If they were put up for auction in the Myriad Treasure Pavilion, they could sell for millions of *jin* of Yuan liquid, but here, you could get them by simply cleaning the first floor of the Immortal Devil Palace once.

"It's normal. The Ancestor is one of the Three Sovereigns, the ancestor of the human race. With the accumulation of billions of years, his foundation is naturally terrifying. Those that can be compared to him are perhaps only the Buddhist and Taoist sects."

Jiang Xuan sighed. Which of the top Dao Ancestors in the Three Realms hadn't accumulated countless years? The foundation of any one of them was unimaginable, let alone powerhouses at the level of the Three Sovereigns of the human race.

It was precisely because of such a foundation that they had the boldness to regard Immortal-Tier cultivation methods and Returning Void secret techniques as trivial.

"Let's go, we'll go to the second floor and take a look." Jiang Xuan put down a volume of secret techniques and headed to the second floor of the Immortal Devil Palace.

The bookshelves on the second floor of the Immortal Devil Palace were also engraved with words: "Wipe all the tables in the Immortal Devil Palace, and you can choose any one."

Compared to cleaning the first floor, this was indeed a little more difficult, but it wouldn't take too much time. At most, it could be done in three days.

But on this floor, you could already obtain the top cultivation methods and secret techniques of some Heaven Immortal-level forces in the mortal realm.

Jiang Xuan didn't stay too long and went straight to the third floor.

There was still a line of words on the bookshelf: "Plant a hundred spiritual herbs and medicines, and you can choose any one."

"This is a bit troublesome, estimated to take about a month."

Planting spiritual herbs and medicines was very complicated. Even if it was only a hundred plants, it would be difficult to complete without a month. But on this floor, the secret techniques had barely reached the Heaven Immortal threshold level. If it were in the mortal realm, they could become the core secret techniques of a Heaven Immortal force.

Jiang Xuan still didn't stop and continued upwards. He would definitely have a lot to do with the Immortal Devil Palace in the future, so he naturally had to understand it more.

Gradually, he also understood the first rule for obtaining cultivation methods and secret techniques in the Immortal Devil Palace:

The test on the first floor could be completed in about a day.

The test on the second floor required about three days.

The third floor required about a month.

The fourth floor required more than half a year.

The fifth floor required about three years.

The sixth floor required at least twenty years.

The seventh floor required at least a century.

And the eighth floor required at least a millennium!

"If it's according to this rule, the geniuses of the Lieshan Residence can only obtain the cultivation methods and secret techniques of the fifth floor at most." Jiang Xuan sighed. This method was the simplest, but it also took the most time.

However, by the fifth floor, you could already see the most top-notch Heaven Immortal secret techniques of the Three Realms, almost pure Yang. As for the cultivation methods, they had all reached the pure Yang level. Compared to that, what did spending three years matter?

"I previously chose the secret technique on the third floor, but that's already my limit. If I want to obtain higher-level ones, I can only use this slower method." You Zhu also said with a wry smile.

There were two ways to obtain the cultivation methods of the Immortal Devil Palace. One was to complete the requirements on the bookshelves. This wasn't difficult. All the secret techniques and cultivation methods on the first eight floors could be obtained in this way.

As for the other method, it was to challenge the puppets outside the Immortal Devil Palace. Each floor had a special puppet that would suppress its realm to the same level as the challenger and only compete in understanding of the Dao. Divine powers and secret techniques were prohibited.

As long as you defeated it once, you could learn a secret technique or cultivation method on the corresponding floor of the Immortal Devil Palace, and there was no limit. Even if you kept challenging the puppet on the first floor, no one would care.

Moreover, if you wanted to learn the secret techniques and cultivation methods on the ninth floor, there was only one way: defeat the puppet on the ninth floor. After all, any one of the cultivation methods on the ninth floor was at the top Dao Ancestor level, so naturally, it couldn't be spread casually.

"You Zhu, you can only defeat the puppet on the third floor? That's troublesome." Jiang Xuan scratched his head, feeling a little helpless. You Zhu had already reached the Perfected Manifestation stage, and was also a genius, mastering two complete Daos.

But even so, she could only defeat the puppet on the third floor.

Jiang Xuan had only broken through to the Manifestation stage a few months ago, and had only mastered one complete Dao. His biggest advantage was his powerful divine sense, but this competition only compared understanding of the Dao. It was still unknown whether he could defeat the puppet on the third floor.

"Xuan, you've only just entered the Dao arena. With Ancestor Qing Fan guiding you in the future, you'll definitely make amazing progress. I believe you'll be able to defeat higher-level puppets soon." You Zhu comforted him.

"Sigh…"

What could Jiang Xuan say? Could he say that Immortal Qing Fan was too lazy to care about his cultivation? He felt that as long as the progress of his alchemy skills didn't fall behind, Immortal Qing Fan wouldn't care what realm he was in at all.

"Forget it, let's take a look at the secret techniques on the first three floors first. If there's a suitable one, I'll go challenge it. If I can't find one, I'll just leave it for now." Jiang Xuan said.

He wasn't lacking Qi refining methods for the time being. Pure Yang-level and Ancestral Immortal-level were no different to him. Anyway, he definitely didn't want to condense a Third-Rank Golden Core. Before becoming an immortal, he definitely had to find a method to temper the Golden Core.

So now he definitely paid more attention to secret techniques, followed by understanding of the Dao. The small Dao on the Clear Void Dao Stone would definitely be the main aspect he would comprehend in the future.