After successfully renting the Immortal Cave, the two immediately moved in.
Su Bai looked at the surrounding environment; it was very well maintained.
Aside from being expensive, there were no downsides, and each rental required a minimum of ten years.
"It's a bit of a waste."
Hearing Su Bai's words, Xu Changge didn't mind.
"It's not a waste. If we don't find Foundation Establishment Spirit Medicine and then have some gains after going to the Zhenyi Secret Realm, we can come back and continue living here. We can't waste this Gathering Spirit Array."
As Xu Changge spoke, she took a deep, satisfied breath.
Su Bai also took a breath.
Although it wasn't a third-tier Spiritual Vein, it was, after all, near a third-tier Spiritual Vein and had a Gathering Spirit Array.
In terms of Spiritual Qi, it was much stronger than Wumu Island.
Su Bai even didn't want to go out to the auction and instead immediately began Cultivating.
Xu Changge didn't care about the Spirit Stones used to rent the Immortal Cave; compared to the Foundation Establishment Opportunity, these Spirit Stones were not even worth a mosquito's leg.
"Do you want to go out and look around?"
After Xu Changge surveyed the Immortal Cave, she was very satisfied and then invited Su Bai to go out and explore.
Su Bai naturally agreed.
As a bumpkin, it was her first time in such a Cultivator city, so of course, she wanted to broaden her horizons.
Otherwise, wouldn't it be a wasted trip?
After the two walked out of the rented Immortal Cave, their faces were covered with light veils that concealed their appearances.
Xu Changge was quite familiar with Tianyun City.
With her leading Su Bai, the two strolled unhurriedly.
Initially, Su Bai was interested in various places in Tianyun City, but after gradually becoming familiar, she also calmed down and began to do proper business.
She started inquiring about news of Foundation Establishment Spirit Items.
Xu Changge took Su Bai in and out of different Spirit Medicine shops. These shopkeepers had a partnership with Tianyun City.
Typically, they would be informed of news like Foundation Establishment Spirit Medicine appearing at auctions, which they would then disseminate to Loose Cultivators to generate hype and increase the price of Foundation Establishment Spirit Medicine.
While Xu Changge was conversing with the shop owner, Su Bai was not idle.
She was buying Pill Formulas.
Although Spirit Medicine shops primarily sold Spirit Medicine, they also sold Pill Formulas.
Su Bai's goal was very clear: the Foundation Establishment Pill Formula.
Over the many years in Tianyun City, countless Loose Cultivators had come, and while the Foundation Establishment Pill Formula might not be readily available to everyone, anyone who needed it could buy it.
It was just that Pill Formulas were easy to obtain, but Spirit Medicine was hard to come by.
When Xu Changge finished her conversation with the shop owner and walked over, Su Bai looked at her expression, which was calm, showing neither joy nor disappointment.
"Any news?"
Although she knew the outcome, Su Bai still asked.
Hearing Su Bai's concern, Xu Changge reached out and played with her hair, shaking her head slightly.
"It's just an ordinary Spirit Medicine shop; they don't even have the auxiliary Medicine for the Foundation Establishment Pill."
Xu Changge was used to it; after all, she had been preparing for the Foundation Establishment Pill as early as ten years ago.
In fact, apart from the main Materials for the Foundation Establishment Pill—Jade Marrow Mushroom, Purple Monkey Flower, and Tianling Fruit—she only lacked Profound Ice Flower and Illusion Heart Grass for the other auxiliary Medicine.
Not finding them here wasn't disappointing; she was just here to gather information.
It was Su Bai who was interesting.
"Younger Sister Su, I saw you bought a Pill Formula just now?"
Su Bai didn't hide it and nodded.
"I bought the Foundation Establishment Pill Formula."
"I have it here, older sister, why did you still buy it?"
Xu Changge was a bit puzzled. She had the Foundation Establishment Pill Formula, so why would Su Bai still buy it?
Did she not want to trouble herself?
So Xu Changge said again:
"You just need to say a word about the Pill Formula; I wouldn't refuse to let you see it."
Then Xu Changge couldn't understand what Su Bai was thinking.
Su Bai just shook her head without explaining.
Later, Xu Changge took Su Bai to other Medicine shops.
They also visited Wanbao Pavilion, which was rumored to be a mysterious organization spanning multiple countries.
Not only did it have a vast array of goods, but its reputation was also excellent.
As soon as Su Bai entered, she was dazzled by the various items inside.
Within Wanbao Pavilion, there were not only Spirit Medicine and Magical Artifacts but also various Cultivation Techniques for sale.
Then, under Xu Changge's strange gaze, Su Bai purchased another copy of the Foundation Establishment Pill Formula.
Before this, every time Su Bai visited a Medicine shop, she would buy a Pill Formula.
Now, counting the one she bought from Wanbao Pavilion, she had at least twenty or more Foundation Establishment Pill Formulas in her possession!
Although Su Bai never explained, Xu Changge roughly guessed the purpose of Su Bai's actions.
This made Xu Changge shake her head, sighing at Su Bai's caution.
Foundation Establishment was a major event.
One could not be careless.
Su Bai bought multiple copies of the Foundation Establishment Pill Formula to compare them from various sources.
Seeing that the Pill Formulas were largely similar, she understood that the purchased Pill Formulas were all fine.
Only some auxiliary Medicine would be slightly different.
However, with Su Bai's status as a first-tier High Grade Alchemist, she could tell that the effects of those differing auxiliary Medicine were almost the same.
They were basically all related to dispelling stasis and promoting blood circulation, clearing meridians, and reducing heat.
Even if a few of these auxiliary Medicine were missing, if the efficacy of the other auxiliary Medicine was sufficient, the Alchemy could still succeed.
Furthermore, based on these Pill Formulas and Xu Changge's introduction, Su Bai understood three methods of Foundation Establishment.
The first method was the Foundation Establishment Pill, primarily based on Spirit Medicine. This method was the safest; one only needed to purchase the Spirit Medicine and then ask an Alchemist to refine the Foundation Establishment Pill.
The second method was the Foundation Establishment Pill, with Monster Beast Pill as the main Material.
This method was somewhat difficult, as it required at least a second-tier Yao Beast's Monster Beast Pill.
That was a Yao Beast equivalent to a Foundation Establishment Cultivator.
How could ordinary Loose Cultivators have the ability to hunt and extract the Monster Core?
Even Foundation Establishment Families rarely considered this path when seeking Foundation Establishment Pills for their descendants.
The Demon Beast Mountain Range was vast, and its environment was complex. The areas where second-tier Yao Beasts resided were already very dangerous for Cultivators.
Some second-tier Yao Beasts were not even solitary; if one encountered a group of second-tier Yao Beasts, the death would be miserable, and no one would even help collect the corpse.
Therefore, this method was generally considered by desperadoes or Cultivators who were extremely confident in their own strength.
The third method was to not use the Foundation Establishment Pill and forcefully Breakthrough with Qi Refining Peak Cultivation.
However, in Su Bai's opinion, this method was no different from courting death.
Forceful Breakthrough had Spiritual Root limitations.
If you had a High Grade Spiritual Root, you would have a 50% success rate without relying on the Foundation Establishment Pill.
If it was an Earthly Spiritual Root, it could be 90%!
And if the Cultivation Technique was powerful, it could even be a 100% chance!
There was even less need to mention the Heavenly Spiritual Root.
Su Bai had never even heard of such a legendary existence in her small place.
Among these three Foundation Establishment methods, in Su Bai's opinion, the most cost-effective was naturally the first one.
Purchase Spirit Medicine and then refine the Foundation Establishment Pill.
However, this method had a difficulty.
Too many Cultivators were competing for these Foundation Establishment Spirit Medicine.
The auxiliary Medicine had no strict growth environment requirements, so there was no shortage.
But the main Medicine for the Foundation Establishment Pill not only had demanding growth environments but also age requirements.
If you used Spirit Medicine that wasn't at least a hundred years old for refining, you would only get a batch of Waste Pill (waste pills).
They would be full of Pill poison; taking them would send you to heaven on the spot, and you wouldn't need to consider Foundation Establishment anymore.
Su Bai only hoped that this time, her and Xu Changge's luck would be a little better.
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