In Martial Universe, Signed in at the Start with Yao Lao's Ring

Lin Yan agreed with Yao Lao's viewpoint.

However, this was still the Martial Universe, different from the Dou Qi Continent.

So, in Lin Yan's opinion, the Three Lines Green Spirit Pill could certainly be used, but it would primarily serve as an auxiliary aid.

The main approach should still be based on the cultivation system of this world.

"Senior Yao Lao, I plan to ask the Patriarch about knowledge regarding the Yuan Dan Stage."

"After all, he has remained at this same stage for a long time, and his research and understanding of the Yuan Dan Stage far surpasses ours."

"If I can obtain some insights from him, it should be highly beneficial for my future breakthrough."

After some thought, Lin Yan expressed his intentions to Yao Lao.

"Mm, little friend, that makes sense."

"Then go ahead!"

Yao Lao nodded in agreement.

Although Yao Lao's strength surpassed Lin Zhentian's, he cultivated a different system.

Furthermore, listening to different perspectives wouldn't hurt. More opinions meant more angles of consideration. If something proved useful, it could be adopted, and if not, learning more things was never a loss.

Thus, Yao Lao quickly returned to the storage ring, and Lin Yan proceeded toward the hall where Lin Zhentian was.

"Yan'er, what brings you here?"

At this moment, Lin Zhentian was still busy with his cultivation. But as soon as he heard that Lin Yan had arrived, he immediately put aside all his training.

He personally brewed tea to welcome Lin Yan.

"Grandfather, I came today to ask you about the Yuan Dan Stage."

Lin Yan greeted Lin Zhentian first, then directly got to the point.

"Yuan Dan Stage?"

Lin Zhentian was momentarily taken aback.

Then, his gaze toward Lin Yan became somewhat excited.

He couldn't help but test the waters. "Yan'er, you're asking me about the Yuan Dan Stage... could it be that you—"

Lin Yan simply nodded, confirming it directly.

"That's right, Grandfather. I've already reached the late Heavenly Yuan stage."

As soon as he finished speaking, a powerful aura erupted from Lin Yan's body.

Startled by this aura, Lin Zhentian's expression changed.

Because Lin Yan practiced a fusion of energy systems from two worlds, his Yuan Power was far more robust than an ordinary Late Heavenly Yuan practitioner.

With this surge of Yuan Power, Lin Zhentian instantly realized that Lin Yan's presence felt even stronger than his own.

This left him feeling utterly shocked.

However, once the initial shock faded, his expression was filled with immense joy.

"Good! Good! Good!"

Lin Zhentian laughed heartily, clapping his hands in delight.

Then, without holding anything back, he imparted all his years of research and understanding to Lin Yan.

"Yan'er, listen carefully. The mysteries of the Yuan Dan Stage took me years of study to comprehend."

"A practitioner at the Late Yuan Gate Stage must maintain a perfect balance between Yin and Yang energy to condense a Yuan Dan. No matter how strong one's Yuan Power is, without this balance, they will never form a Yuan Dan!"

"Only by achieving true harmony between Yin and Yang can one successfully condense a Yuan Dan and enter the Yuan Dan Stage."

As he spoke, Lin Zhentian poured Lin Yan a cup of tea, motioning for him to drink while listening. Then, he continued:

"After achieving the balance of Yin and Yang and successfully condensing a Yuan Dan, there are still different levels within this stage."

"The primary distinction lies in the grade of the Yuan Dan."

"The Yuan Dan is classified into one to nine stars. The higher the grade, the greater the increase in Yuan Power for the practitioner. The grade of the Yuan Dan is determined by the strength of the Yin and Yang energies absorbed during the breakthrough."

"The more powerful the Yin and Yang energies, the higher the grade of the condensed Yuan Dan. This is why two practitioners at the same Yuan Dan Stage may have vastly different strengths—it all depends on the quality of their Yuan Dan."

"..."

Inside the hall, Lin Zhentian continued to explain the knowledge he had accumulated over the years. Meanwhile, Lin Yan and Yao Lao absorbed his insights, gaining a new understanding of the Yuan Dan Stage.

After grasping these concepts, Lin Yan expressed his gratitude to Lin Zhentian before finally taking his leave.

As soon as Lin Yan returned home, Yao Lao let out a sigh of relief.

"Fortunately you specifically consulted Lin Zhentian."

"Otherwise, had you recklessly attempted a breakthrough and formed a low-grade Yuan Dan, you would have fallen behind."

Lin Yan nodded toward Yao Lao, feeling equally fortunate about his decision.

Suddenly, Yao Lao spoke again.

"However, little friend, if you need a top-tier Yin energy…"

"I might be able to assist you."

As he said this, Yao Lao emerged from the storage ring, and in his palm, a ghostly white flame flickered into existence—the Bone Chilling Flame.

"Look, my Bone Chilling Flame is a Yin Fire. The energy contained within it is naturally one of the most supreme Yin Fiend forces in this world."

"However…"

Lin Yan looked at Yao Lao in confusion. "Senior Yao Lao, however what?"

Yao Lao replied, "Since you would be using such a supreme Yin energy, an ordinary Yang energy would be insufficient to achieve the balance of Yin and Yang."

"In other words, unless little friend can acquire another Yang-based Heavenly Flame, it will be impossible to harmonize the two energies."

Lin Yan could only let out a bitter laugh upon hearing this.

"That's difficult, Senior Yao Lao."

"Heavenly Flames… how could they be acquired so easily?"

Lin Yan shook his head helplessly. If he relied on the system's sign-in feature, it was possible that he could obtain a Heavenly Flame.

However, to be honest, the probability of that happening was incredibly low.

Signing in repeatedly, who knew how many years it would take before he could finally obtain the Heavenly Flame he had been dreaming of?

Yet his breakthrough was imminent—he couldn't afford to wait indefinitely until he eventually obtained another Heavenly Flame before stepping into the Yuan Dan Stage.

Thus, the supreme Yin energy Yao Lao offered would be somewhat wasted without a matching Yang-based Heavenly Flame.

"Ah, that's true."

"Heavenly Flames are extremely rare, especially in this world."

Yao Lao sighed in regret, clearly understanding Lin Yan's dilemma.

"For now, let's focus on refining the Three Lines Green Spirit Pill. No matter what, this pill will definitely be beneficial during the breakthrough."

"Once the pill is refined, we can reconsider whether to use lower-grade Yin and Yang energies to condense the Yuan Dan."

"But doing so would be a real pity."

Lin Yan sighed, feeling somewhat troubled.

Just as Lin Yan was about to leave the Lin Clan and head to Qingyang Town to purchase medicinal ingredients for refining the Three Lines Green Spirit Pill, he suddenly saw Qing Tan rushing toward him in a panic.

This surprised Lin Yan, as he knew Qing Tan's personality well—she would never act so flustered unless something serious had happened.

"What's wrong, Qing Tan?"

Lin Yan quickly stepped forward and asked her.

"Lin Yan, my brother discovered a strange, bewitching flower deep within the Yang Yuan Stone mine. When he touched it, the flower dissolved into liquid and merged into his body… After that, he lost consciousness and hasn't woken up since."

Qing Tan spoke anxiously, her voice trembling with worry.

"Don't worry, I'll take a look."

Lin Yan gently patted Qing Tan's head to reassure her.

Then, without hesitation, he took her small hand and rushed toward the depths of the Yang Yuan Stone mine.

When they arrived at the scene, Lin Yan immediately noticed the intense presence of Yang Energy. The moment he stepped inside, he felt an overwhelming heat wash over his body.

However, he quickly refocused his attention on Lin Dong, who was lying unconscious.

Carefully injecting a trace of Yuan Power into Lin Dong's body, Lin Yan examined his condition closely.

To his relief, he found that Lin Dong wasn't in any real danger. In fact, his Mental Energy had unexpectedly undergone a significant enhancement.

Taking out a pill from his storage ring, Lin Yan placed it into Lin Dong's mouth. Then, he turned to Qing Tan and reassured her.

"Lin Dong is fine, don't worry."

"He actually gained quite a fortunate opportunity from this. When he wakes up, his strength should improve significantly."

Hearing this, Qing Tan finally sighed in relief. "That's good to hear."

She had just ordered Xiao Yan to carry Lin Dong back when, suddenly, the Nine-Colored Heaven Swallowing Python leaped out of Lin Dong's storage ring.

"Hissss~ hissss~"

After letting out a few calls, the little python suddenly slithered toward the depths of the Yang Yuan Stone mine at an astonishing speed.

Seeing this, Lin Yan had no choice but to chase after it.

"Qing Tan, take Lin Dong back first."

"I'll follow this little one and catch up with you later."

After quickly instructing Qing Tan, Lin Yan sprinted forward in pursuit.

Following the Nine-Colored Heaven Swallowing Python deeper into the mine, Lin Yan could feel the surrounding temperature rising with every step.

Finally, the little python came to a halt.

Lin Yan lifted his gaze and was instantly struck by the sight of a massive, crimson lava pool that radiated an overwhelming heat.

"You little troublemaker, why did you suddenly rush all the way here?" Lin Yan muttered, slightly exasperated.

Just as he was about to step forward, Yao Lao's voice suddenly echoed from within the storage ring, filled with intrigue.

"This place… the Fire Element here is incredibly pure."

"Generally, there are only two possible reasons for such an immense concentration of Fire Elemental Energy."

"One possibility is that there exists an extremely high-grade Fire-Attribute Heavenly Treasure here."

"The other possibility… is the presence of a Heavenly Flame."

Hearing Yao Lao's words, Lin Yan's eyes widened in astonishment.

His heart started racing with excitement.

"A Heavenly Flame?"

"If there really is a Heavenly Flame here, then wouldn't that mean I can use the most extreme Yin and Yang energies to form my Yuan Dan?"