Near the Ice and Fire Yin Yang Well.
After successfully subduing Dugu Bo, Lin Yu brought him back to the valley where the Ice and Fire Yin Yang Well was located.
First, he used the Golden Lotus Martial Soul of Merit to heal Dugu Bo's injuries.
Then, with the Purifying Light of the Pure World White Lotus Martial Soul, he completely cleansed the Jade Phosphor poison from Dugu Bo's body!
After the poison was removed, Dugu Bo immediately felt a surge of vitality and clarity.
His reluctance to submit to Lin Yu started to fade, replaced by a growing sense of acceptance.
Following this, Lin Yu explained to Dugu Bo the root cause of the Jade Phosphor Clan's poison problem.
The reason every Jade Phosphor Serpent Spirit Master in their clan is afflicted with Jade Phosphor Poison is that the Jade Phosphor Serpent Martial Soul itself is highly toxic.
Each time they undergo Spirit Possession, the serpent's poison invades their bodies, and over time, this builds up, ultimately leading to death.
Knowing the cause made it clear that the solution wasn't impossible.
One method would be to never allow a Jade Phosphor Serpent Spirit Master to undergo Spirit Possession. But on the Douluo Continent, this was not feasible.
Another solution involved giving a Spirit Bone to a Serpent Spirit Master before their Spirit Awakening. Every time they underwent Spirit Possession, the accumulated poison would be forced into the Spirit Bone. This could prevent the buildup of Jade Phosphor Poison.
However, given the rarity of Spirit Bones, even Dugu Bo could only smile bitterly and shake his head.
The third solution, of course, involved Lin Yu and his Pure World White Lotus Martial Soul.
As long as Dugu Bo was willing to pledge eternal loyalty to Lin Yu, and that future generations of the Jade Phosphor Clan would also serve him, the poison would no longer be an issue.
Of course, Lin Yu didn't say this last part.
After hearing all three options, Dugu Bo sighed in defeat. He knew the first two were practically impossible, leaving him with no choice but to side with Lin Yu if he wanted his clan to survive.
After receiving Lin Yu's Purification Light treatment and realizing it wasn't a lie, Dugu Bo humbly requested Lin Yu to help his granddaughter, Dugu Yan, as well.
Lin Yu agreed with a nod.
Shortly after, Dugu Bo left the Ice and Fire Yin Yang Well to fetch his granddaughter, Dugu Yan.
...
Once Dugu Bo had departed, Lin Yu stood amidst the misty white fog and slowly walked toward the Ice and Fire Yin Yang Well.
Soon, he found himself near the area where many rare and precious immortal herbs grew.
Beyond this lay the Ice and Fire Yin Yang Well itself, a pool of red and blue resembling a Taiji diagram.
"So many immortal herbs! Let's see what kinds they are and what effects they have…"
Standing near the Ice and Fire Yin Yang Well, Lin Yu gazed at the extraordinary herbs growing in abundance. Especially fascinated by their unique forms, he activated the third eye of his external Spirit Bone, the Three-Eyed Golden Lion's Vertical Eye, and unleashed the Eye of Fate Spirit Skill.
Instantly, as the herbs and immortal plants surrounding the Ice and Fire Yin Yang Well entered his view, streams of information began flooding into Lin Yu's mind.
Name: Qirong Tongtian Chrysanthemum
Type: Plant
Grade: Immortal
Effect: Expand...
Name: Cockscomb Phoenix Sunflower
Type: Plant
Grade: Immortal
Effect: Expand
...
After reviewing the information about the various immortal herbs, Lin Yu couldn't help but marvel at their abundance. There were over thirty or forty of them, with more than half having the power to evolve a Spirit Master's Martial Soul.
However, their effects were only beneficial if the right person consumed them; otherwise, no evolution would occur.
As Lin Yu pondered this, he suddenly felt a stirring within his Chaos Green Lotus Martial Soul.
What's going on?
Sensing the movement, Lin Yu curiously summoned the Chaos Green Lotus Martial Soul.
Immediately, it began to emit a faint green light, enveloping the entire Ice and Fire Yin Yang Well.
In an instant, all the herbs around the well began to sway gently, releasing a variety of soft glows as they rapidly absorbed spiritual energy!
What? The Chaos Green Lotus Martial Soul can accelerate the growth of herbs.
Seeing this, Lin Yu was momentarily stunned.
Originally, he had intended to pick some immortal herbs and refine their essences with his Universe Cauldron before consuming them.
But now, it seemed he should let them grow a bit longer!
As the herbs and immortal plants swayed in harmony with the Chaos Green Lotus Martial Soul, it seemed to resonate with something deep within Lin Yu.
Sensing this unknown force, Lin Yu instinctively drew it out.
A green energy field expanded from his body, covering the entire Ice and Fire Yin Yang Well. The plants' absorption of spiritual energy surged once more!
Wait, is this… a domain?!
Realizing that he had expanded an energy field from within, Lin Yu paused, before quickly recognizing that this was indeed a rare domain—a special ability only possessed by a select few Martial Souls on the Douluo Continent.
After testing, Lin Yu soon gained a better understanding of his Chaos Green Lotus Martial Soul's domain abilities.
The first ability, which he named Creation, allowed him to stimulate plant growth, among other functions. It could also amplify any form of energy within the domain.
The second ability, which he named Return to Origin, allowed him to absorb and convert any type of attack, as long as the Chaos Domain could withstand it, turning it into his energy!
This power is insane!
Lin Yu was sure that the Chaos Domain would reveal even more abilities once he reached Spirit Saint level and unlocked the true form of the Chaos Green Lotus Martial Soul.
Having unexpectedly awakened the Chaos Green Lotus Martial Soul's domain at the Ice and Fire Yin Yang Well, Lin Yu was thrilled with the surprise windfall!
As he continued to use the Chaos Green Lotus Martial Soul and its domain to accelerate the growth of the herbs and immortal plants around the Ice and Fire Yin Yang Well, his eyes fell on the Dew of Autumn Waters.
Suddenly, Lin Yu had a realization: Eyes are part of the body too, right? So, can training the eyes through secret techniques count as body refinement?
After consulting the system, Lin Yu received an answer that delighted him: Eye techniques indeed count as body refinement!
With that settled, Lin Yu could finally use the reward for choosing a body refinement technique that he had yet to claim!
Previously, because he had already been practicing the Genetic Martial Arts from the Swallowed Star world, Lin Yu had felt that the body refinement technique might not be very useful and had been holding off. But now, knowing that eye techniques counted, he had a new use for it!
After consulting with the system, Lin Yu chose a secret eye technique called Heavenly Star God Eyes.