The more Li Feiyu thought about it, the more he felt it was possible.
The Formation had five corners, which should correspond to the Five Elements' directions.
"The Five Elements' Spiritual Qi generates and restrains each other, representing a balance in the Great Dao of nature."
"Metal generates Water, Water generates Wood, Wood generates Fire, Fire generates Earth, and Earth generates Metal."
Li Feiyu continued to murmur in a low voice, "Wood restrains Earth, Earth restrains Water, Water restrains Fire, Fire restrains Metal, and Metal restrains Wood."
"Endless generation, endless cycle."
Li Feiyu simultaneously activated five streams of spiritual power, injecting them into the five vertices of the pentagon, which then formed a diagram of the Five Elements' mutual generation and restraint.
Five-colored light shimmered faintly, then dimmed in an instant.
Li Feiyu frowned slightly, "Is it wrong?"
He tried several more times, but the results were always the same.
"The Five Elements' spiritual power should be correct, but the key... is balance!"
After figuring this out, Li Feiyu began to focus on the balance between the spiritual powers, but this manipulation was too difficult; even with his now powerful Divine Sense and his ability to multitask, he was still flustered.
Balancing the Five Elements' spiritual power required one's control over spiritual power to reach an incredible Realm.
While Li Feiyu was determined to open Gu Changfeng's secret treasure, he also honed his control over spiritual power.
Outputting exactly what was needed, not a single bit more, not a single bit less.
Half a month later, Li Feiyu, by chance, finally achieved the state of Five Elements' balance.
The Formation patterns emitted a strong five-colored light, continuously shining.
Li Feiyu's face showed joy; although he had not yet reached that Realm, with more practice, he might be able to achieve Five Elements' balance and do as he pleased in not too long.
The stone wall opened, revealing a very ordinary space, similar to an Immortal Cave opened by a common Cultivator.
On one stone platform lay a Storage Pouch and a Jade Pearl, behind which was a skeleton.
With a wave of Li Feiyu's hand, the items flew to him.
He recognized the Jade Pearl as a communication tool, so he injected his magic power, and the Jade Pearl emitted a faint blue light, within which a figure appeared.
"Fellow Daoist, hello. My name is Gu Changfeng. I never imagined there would truly be a Heaven-Defying existence with a Five Elements pseudo-Spiritual Root, Cultivating five Cultivation Techniques, and reaching the Core Formation stage stage."
"In my opinion, unless there are infinite resources provided, or one's Spiritual Root Aptitude reaches the level of a two-Spiritual Root, it would be impossible. I wonder what kind of person Fellow Daoist is?"
Gu Changfeng in the light projection smiled slightly and continued, "No more nonsense. Fellow Daoist must be here for the Great Five Elements Sword Formation, I presume."
"I have prepared everything for Fellow Daoist: a semi-finished Formation diagram, methods for refining various elemental Magic Treasure longswords, the subsequent refinement of the Formation diagram, and some Materials I collected in my younger years."
"I will give all these things to Fellow Daoist for free, but I hope Fellow Daoist can promise me one thing."
"For my own purposes, I caused my descendants' Spiritual Roots to mutate, resulting in generations of Five Elements pseudo-Spiritual Roots. This will only change if someone can Breakthrough to Core Formation and leave behind offspring."
"I originally thought I could Breakthrough to Nascent Soul, but who knew I would attract the jealousy and greed of some Nascent Soul old monsters? Although I severely injured them with a simplified Great Five Elements Sword Formation, I myself suffered irreparable injuries, and my Dao path was cut short."
"I am powerless to change my Family's current situation, so I can only leave these behind, hoping that someone in the future can help me with this."
"I don't know who Fellow Daoist is or what your temperament is like. I won't ask Fellow Daoist to make any vows, but I still hope Fellow Daoist can lend a hand to my Gu Family."
"If you are unwilling, it doesn't matter; it's simply fate."
"The Great Five Elements Sword Formation is my greatest achievement in life. I hope Fellow Daoist can one day make its name known throughout the Chaotic Star Sea."
With that, the light from the Jade Pearl disappeared.
Li Feiyu stood in place, pondering for a moment, then probed with his Divine Sense.
"Profound Yellow Earth, a top-tier Earth-element Material; Deep Sea Blue Marrow Crystal, also an excellent Material for refining Water-element Magic Treasures; and Phoenix Blood Stone, Geng Metal."
"No Wood-element Materials... That's right, top-tier Wood-element Materials would need at least seven or eight thousand years to be suitable, and they are quite rare."
Li Feiyu sighed slightly. Such a grand gift was indeed the lifelong collection of a Core Formation stage Cultivator.
"I owe a great favor."
Li Feiyu adhered to his original intention, with his own code of conduct. If Gu Changfeng left such a generous gift and he didn't show any gratitude, it might cloud his original intention.
When advancing to Nascent Soul, one reviews their past. Many past events question the original intention. Once a thought is not firm, it will invite a Heart Demon to entangle, leading to failure in advancement in minor cases, and death in severe cases.
"Gu Changfeng, you gave me a great gift, so I will return a Core Formation Cultivator to your Gu Family."
Li Feiyu's voice echoed in the stone room.
He then examined the other items. Even the semi-finished Great Five Elements Sword Formation diagram was incredibly complex, powerful enough to trap most Core Formation Cultivators.
There was also the method for refining the Sword Formation. This differed from what he had seen in the Star Plucking Pavilion. Each element required the refinement of seventy-two Magic Treasures, which would probably require the combined strength of the entire human world to gather so many top-tier Materials.
For this reason, Gu Changfeng had modified it to nine Magic Treasure longswords for each element, with one as the main sword and the others as auxiliary. The auxiliary swords could split into seventy-two, controlled by the main sword.
This greatly reduced the difficulty of manipulation and also reduced many Materials.
Gu Changfeng's Jade Slip stated that the main sword of each element was of paramount importance and must be made of top-tier Materials, without any carelessness. As for the auxiliary swords, they could be refined later, and replaced when better Materials were found.
"As expected of a genius!"
Besides these, the Storage Pouch also contained some damaged longsword Magic Treasures and a damaged simplified Great Five Elements Sword Formation diagram.
"These can still be used after some repairs."
Li Feiyu thought to himself, glanced at Gu Changfeng's skeleton, flicked a flame, and burned him to cold ashes.
"Dust to dust, ashes to ashes. Gu Changfeng, may you rest in peace here."
Afterward, Li Feiyu exited the stone room and closed the stone wall door again. The Restriction on this stone wall was also ingenious, connected to the earth's pulse. Unless one was a truly peerless Divine Ability user, it would be impossible to open it by human effort.
This was also why so many people came but failed to obtain Gu Changfeng's legacy.
Gu Changfeng had his pride; he would not casually hand over the fruits of his lifelong efforts to others.
Upon exiting the secret chamber, Grandfather Gu Mingchuan was waiting for him, "Senior, you're out. Did you find anything?"
Li Feiyu inadvertently glanced at him, and Grandfather Gu Mingchuan immediately shut up and lowered his head.
"Tell your grandson to come over."
"Alright, Senior."
Not long after, Grandfather Gu Mingchuan brought his grandson over and said, "This is my grandson, Gu Mingyang."
"Today, he will come with me."
Grandfather Gu Mingchuan was slightly startled and immediately knelt down, pleading, "Senior, my Gu Family only has this one descendant! Please show mercy!"
Li Feiyu raised his hand, and Grandfather Gu Mingchuan automatically stood up, unable to refuse.
He looked at Li Feiyu in surprise, and Li Feiyu said, "If you don't want your Gu Family to be cut off, let him stay."
"Does Senior want to take my grandson as a disciple?"
Li Feiyu shook his head, "Not for now. It depends on his future performance. However, for a period from now on, he will follow me. Do you have any objections?"
Grandfather Gu Mingchuan wept with joy, "No, no, no. This is my grandson's good fortune, and also my Gu Family's good fortune."
He hugged Gu Mingyang, stroking his head, "From now on, you must listen to Senior carefully. Don't worry about us. With you, our lineage will still exist!"
"Walk on well, and one day restore our ancestor's prestige!"
"Did you remember?"
"I remember, Grandpa!"
Li Feiyu enveloped Gu Mingyang with Spiritual Qi and flew directly outside, then summoned the Clear Wind Boat and headed straight for Heavenly Star City's market, temporarily settling him in an inn.
"You can Cultivate peacefully here for now; no one will disturb you. I'll come pick you up after a while."
Li Feiyu didn't want to keep the person by his side, but having received a favor, he had to repay it.
He would arrange for him after his Immortal Cave was renovated.
For now, he headed to Han Li's Immortal Cave.