Tang San thought for a long time, but still couldn't figure it out.
In the end, he simply gave up thinking and began heading back to the dorms to cultivate.
—
After leaving Shrek Academy, Ye Yu returned to the Dugu Residence.
Inside a secluded cultivation chamber, he began channeling the External Spirit Bone: Demon Willow Fluff (mother body) to retrieve the Blue Silver Emperor bloodline origin stored by the parasitic Demon Willow Fluff implanted inside Tang San.
In an instant, Ye Yu felt the mother bone begin to release a current of vibrant, pure bloodline energy—it was full of vitality and resonated deeply with his body.
This was the essence of the Blue Silver Emperor.
Ye Yu activated his Inner Core Technique, doing everything he could to integrate the Blue Silver Emperor bloodline into his own body.
As he expected, however…
It was one thing to absorb bloodline essence as a supplement.
It was something else entirely to fuse it into one's body.
That was a sky-high gap in difficulty.
Ye Yu soon discovered that the blood and qi circulating in his body through the Inner Core Technique could interact with the Blue Silver Emperor bloodline.
But spirit power had no effect on it whatsoever.
In the end, just like before, the bloodline origin was absorbed not into his body, but by his Blue Silver Jade Tree Martial Soul, strengthening it instead.
The golden veins running through the trunk of the tree thickened and grew clearer, while its life force grew even more immense.
But no further transformation occurred.
At the end of the day…
Ye Yu had already cultivated his Blue Silver Grass far beyond the level of the Blue Silver Emperor.
"As expected, it still didn't work…"
Unable to fuse Tang San's bloodline into his body, Ye Yu sighed in frustration.
Still, all was not lost.
At the very least, he discovered that his Inner Core Technique's blood and qi refining stage could stimulate the Blue Silver Emperor bloodline—unlike spirit power, which had no effect.
So next, he would begin studying blood and qi cultivation in earnest.
Although the Inner Core Technique cultivated all three treasures—essence, qi, and spirit—Ye Yu had always focused primarily on spirit power.
As for essence, meaning blood and qi, he had only ever circulated it passively to support his body via thunder tempering and lightning refinement.
This, clearly, had to change.
Since he couldn't yet self-generate a seventh spirit ring by fusing the Blue Silver Emperor bloodline…
He moved on to Plan B:
Use the Demon Willow Fluff to raise Ah Yin's cultivation to 100,000 years, and then—using Tang Hao, whose limbs had been severed and whose life was barely hanging on through the sustaining effect of a parasitic Demon Willow Fluff—force Ah Yin to offer herself in sacrifice.
—
The next day.
Ye Yu brought Ah Yin to the Ice and Fire Yin Yang Well.
He first planted the rare spiritual herbs he had gathered from the Sun Fusang Tree's mountain—Fire Ganoderma, Sun Flower, and Flame Lotus—in the scalding-hot zone of the Yang Spring.
Then he began using the Demon Willow Fluff to devour the surrounding ten-thousand-year spirit herbs—especially those with life or neutral attributes—to store up pure spirit power and life essence.
After selecting over a dozen such herbs around the Yin Yang Well, Ye Yu had the Demon Willow Fluff absorb their medicinal energy, or more accurately, their spirit power.
Once he had accumulated enough—well over 100,000 years' worth—he transplanted Ah Yin, who had been growing in the Blue Silver Domain, to an open area beside the well.
"Ah Yin."
"Next, I'll provide you with ample spirit power to raise your cultivation to 100,000 years."
"Focus on absorbing and refining it."
He linked his spiritual sense to her Blue Silver Emperor form and gave the command.
Then, Ye Yu embedded a Demon Willow Fluff into Ah Yin's body and began transferring the stored energy back into her.
As a reborn Blue Silver Emperor who had already reached 100,000 years in her previous life, Ah Yin retained her sentience and wisdom.
She only lacked the corresponding cultivation.
Now, feeling a vast surge of spirit power and life force flooding into her body, Ah Yin didn't even stop to question it. Excited, she immediately began refining the energy with full focus.
Before long, her spirit plant form began undergoing dramatic changes.
The small, tree-like Blue Silver Emperor—its translucent crystal-blue body traced with golden lines—began rapidly expanding.
Its crystalline trunk thickened, its height surged, and the once-slender vines extended outward, becoming thick and powerful.
Before long, Ah Yin's new form resembled the Blue Silver King:
A towering tree, over a meter in diameter, made entirely of intertwined crystalline vines shimmering with golden filigree. She had become a massive, majestic Blue Silver Emperor Tree, though still without a crown canopy.
At last, Ye Yu sensed it—
Ah Yin's cultivation had reached 100,000 years!
"Madam Ah Yin, you may return to human form now."
With a glint in his eyes, Ye Yu smiled slightly.
But she didn't respond.
Instead, after a brief pause…
Her towering tree-form suddenly burst forth with a storm of crystalline blue vines, all lunging straight for Ye Yu.
"Tch. Disobedient, huh?"
Ye Yu's expression cooled, a flicker of light flashing across his eyes.
In that moment, the parasitic Demon Willow Fluff within Ah Yin's Blue Silver Emperor form activated.
It began rapidly absorbing and releasing spirit power, blocking her from using her own spirit abilities.
Dodging the attack with Triple Ghost Shadow Perplexing Track, Ye Yu's figure vanished and reappeared in a flash.
Then, he summoned his Blue Silver Jade Tree Martial Soul and activated his spirit abilities:
First Spirit Ability: Undying Rooting
Second Spirit Ability: Starlight Absorption
Sixth Spirit Ability: Parasitic Devour
Immediately, his Martial Soul began to grow wildly.
Its roots burrowed deep into the earth, while the trunk rapidly expanded into a sky-piercing giant tree.
From its trunk burst countless crystal-blue vines like serpentine dragons, twisting and weaving through the air.
Soon, the vines merged into massive Blue Silver Wood Dragons, roaring and thrashing with terrifying force.
They surged forward to clash directly with Ah Yin's Blue Silver Emperor vines, wrapping around them in a brutal contest of strength.
Naturally, Ah Yin's vines were no match.
In mere moments, they were torn apart, devoured, and reduced to shriveled scraps of wood.
The incoming waves of Blue Silver Emperor vines were swiftly overwhelmed.
One by one, the Blue Silver Wood Dragons coiled around Ah Yin's core, binding her tightly like a bundled silkworm.
Their razor-sharp crystal fangs sank deep into her trunk, while countless parasitic roots embedded themselves into her body…