As for the two Immortal Gu of Tai Bai Yun Sheng, both could be fed by managing their own blessed lands, obtaining sustenance from there.
In Hei Lou Lan's Lou Lan blessed land, the earth was rich with heavy gold ore deposits, which served as the sustenance for the Strength Immortal Gu.
But Fang Yuan's situation was different from theirs.
Most of their Immortal Gu were refined from their lifebound Gu and core Gu upon ascending to immortality, thus unifying with their own path.
As for Fang Yuan's Immortal Gu, most were seized by trickery. Although his lifebound Gu was the Spring Autumn Cicada, he had no Time Path inheritance and walked the Strength Path.
The Immortal Gu in Fang Yuan's hands were extremely chaotic, involving the Time Path, Space Path, Water Path, Wisdom Path, and many other paths. Most crucially, Fang Yuan's blessed land was dead.
His immortal aperture had become a dead aperture. No matter what he planted, nothing survived. He could no longer manage and develop it like a normal blessed land, and thus could not conveniently feed his Immortal Gu, nor could he produce immortal essence on his own. This further burdened him with Immortal Essence Stones.
Fang Yuan's immortal essence not only had to be used for transactions, but a portion of it also had to be refined into Blue-Grape Immortal Essence, and another portion was needed to feed the Immortal Gu. After the fierce battle at Black City, Fang Yuan's economy nearly collapsed, mainly due to this reason.
Thus, the second major problem before Fang Yuan was his immortal aperture and blessed land.
Since his blessed land had died, his cultivation had stagnated.
The blessed land was involved in every aspect, bringing an immense burden to Fang Yuan. Only when Fang Yuan truly shed his zombie Gu Immortal body could he formally begin the cultivation of a Gu Immortal.
However, shedding his zombie identity and returning to a human body meant he could no longer use Wisdom Light. This was another difficult problem.
As for the last major difficulty, it was combat strength.
The Pure Soul Immortal Gu was currently weakened by hunger and couldn't be used. Fang Yuan's trump card, the Immortal Killer Move Myriad Self, could not be activated for the time being.
Fang Yuan's combat strength dropped accordingly.
Whether it was dealing with the future pursuits of the Ten Great Ancient Sects of Central Continent, being hunted by the Northern Plains Gu Immortals, seizing the Wisdom Path inheritance of Dong Fang Chang Fan, helping the Lang Ya land spirit capture desolate beasts, obtaining the Thief Heaven inheritance from the Desolate Valley, or dealing with Fairy Jiang Yu to seize the Dark Crossing Immortal Gu — all required formidable combat strength.
"There are four main aspects affecting a Gu Immortal's combat strength. The Gu Immortal's own battle prowess, Immortal Gu, killer moves, and immortal essence. With the Revenue Gu business now, immortal essence isn't lacking for the time being. The Gu Immortal's battle prowess is accumulated over time and can't be improved in a short period. As for Immortal Gu... Although the incomplete Blood God Son recipe is enough to deduce the complete Immortal Gu recipe, my current wealth is still far from the standard required to refine it."
Fang Yuan pondered for a moment; even if he could refine the Blood God Son, he didn't want to do so.
The Blood Path had long been labeled a demonic path. Even the Ten Great Ancient Sects, who researched the Blood Path, did so in secret, not daring to act openly. Besides, the Heavenly Court had the Demon Extermination List, and Fang Yuan didn't want to appear on it so soon.
Furthermore, almost all of the Immortal Gu in Fang Yuan's hands were hard to feed. The burden of feeding them was too heavy. Adding new Immortal Gu to the mix, Fang Yuan himself lacked confidence.
Thus, the only aspect before Fang Yuan that could rapidly boost his combat strength was killer moves.
Killer moves, in turn, included Immortal killer moves and Mortal killer moves.
"Now that I have sufficient Immortal Essence Stones and am much wealthier than before, I can not only buy more and better Mortal killer moves but also continuously experiment, deduce, and recreate some of the powerful killer moves from my previous life."
With his thoughts settled, Fang Yuan acted decisively and immediately set to work.
Central Continent.
A group of Gu Immortals, led by Feng Jiu Ge, stood before a massive wall of light.
The light wall was incredibly vast, connecting heaven and earth. The white light was dense, like a tangible wall. Within it flickered golden rays, presenting a magnificent and majestic scene.
This was precisely the Fetal Membrane of Central Continent, known as the Sage Saint Boundary Wall.
The five regions of the Gu Immortal world — Central Continent, Southern Border, Eastern Sea, Western Desert, and Northern Plains — were each covered by a layer of this fetal membrane, forming the limits of the world and isolating them from each other.
"Old Suanzi, what are the results of your divination this time?" Can Yang Old Lord asked a young Gu Immortal in the group.
The young Gu Immortal slowly opened his eyes. Within his eyes, mists rose and fell, shifting into endless forms.
After a long while, the mists dissipated, returning to normal black pupils and whites of the eyes.
The young Gu Immortal spoke with a hint of joy in his tone: "It's fine. This section of the boundary wall is relatively thin. It's the third weak spot we've found in our search these days. But it is much more stable than the first and second. I suggest we use this as our breakthrough point, shatter the wall, and break into the Northern Plains!"
"Hahaha, excellent. We have searched nearly a thousand spots and finally found an ideal weak spot." Old Man Tian Long laughed heartily.
Fairy Ling Mei sighed in relief and said with emotion, "Searching for so many days, we finally got a favorable result. It wasn't easy."
"We've already wasted quite some time. Let's begin." Feng Jiu Ge said concisely. "Who will go first?"
Fairy Ao Xue and Fairy Ling Mei looked at each other, then stepped forward together. They said in unison, "This time, our Tian Du Lou will lead the charge."
As they spoke, they both exerted their strength, simultaneously activating the Immortal Killer Move Unparalleled Crescent Slash.
The core of this killer move was a Rank Seven Crescent Moon Immortal Gu, supported by two Rank Six Immortal Gu. The Immortal Killer Move thus formed consumed a vast amount of immortal essence and constantly required mental focus. A single Gu Immortal could not unleash its power; it required two Gu Immortals to activate it together.
As the Immortal Killer Move was activated, a green crescent moon immediately took shape.
The crescent moon was not large, only the size of a water vat, but it was dense and substantial, gleaming brightly like a beautiful work of art. Only the occasional terrifying aura that leaked out revealed it was not as harmless as it looked on the surface.