The Hehuan Sect cultivates alchemy; my senior sister helps me refine alchemy throughout the world.

The depletion of the demonic veins is the most critical problem.

The bewitching mind has completely drained the life force of the entire main meridian; to restore it, one must rely on the essence of metal.

Golden Essence is a supreme treasure of heaven and earth, personally refined by Wan Shuo. It is the origin of the metal element among the five elements and is most adept at condensing spiritual energy.

Using the essence of gold as a catalyst, it is not impossible to regenerate a demonic vein.

That night, Shen Yifei, along with Ye Ling, secretly infiltrated the underground demonic vein of Demon Abyss City.

The two followed the secret passage beneath the Demon Palace downwards. The deeper they went, the lower the temperature became, and a thin layer of frost formed on the stone steps beneath their feet.

"Why is it so cold?" Shen Yifei rubbed his arms. "Isn't a demonic vein supposed to be fire-attribute? Shouldn't it at least be warm?"

"That's normal." Ye Ling walked ahead. "If the demonic vein were still alive, it should be like a furnace underneath. The fact that it's so cold now means that the vein is almost dead."

The ground beneath their feet was covered with shattered black crystals, which creaked as they stepped on them.

These crystals were once the most prized resource of the demon race. Each one contained a rich demonic energy, enough to allow an ordinary demon to cultivate to the Nascent Soul stage.

But now, they are all dull and lifeless.

"That old bastard Huoxin is really ruthless." Shen Yifei squatted down, picked up a piece of broken crystal and weighed it in his hand. There was not a trace of demonic energy inside. "This is not like extracting demonic veins. It's like he gnawed the whole thing clean, bones and all."

Ye Ling placed her hand on the wall of the passage, closed her eyes, and sensed for a moment: "The root of the main vein is still there, but it has withered. To bring it back to life, it needs an external force to inject its primordial power."

"The power of origin..." Shen Yifei muttered, then his consciousness sank into his sea of ​​consciousness, finding Jinbao dozing in the corner. "Little ancestor, wake up!"

The little girl popped out of her mind, her hair in two topknots, hands on her hips, floating in mid-air with a displeased expression.

"What are you doing? I just fell asleep!" Jinbao rubbed his eyes and scolded him in a childish voice.

"Ancestor, don't sleep yet, look around." Shen Yifei pointed around, "Is there any hope for this demonic vein?"

Jinbao yawned, floated around, and then pouted, "It's ruined."

"It's ruined?" Shen Yifei was stunned. He thought to himself that his golden essence was personally refined by Wan Shuo and was the origin of the five elements. Could it be that he couldn't even handle such a small situation?

"Don't even think about messing with me." Jinbao seemed to see right through him. "You have no idea how badly this demonic vein has been damaged."

"No matter how badly it's injured, aren't you the source of the metal element? Metal generates water, water generates wood, wood generates fire, fire generates earth, and earth generates metal. With your five elements as the source, surely you can at least give it a breather, right?"

Jinbao rolled his eyes: "If you have Five Elements Demonic Energy, why don't you go and do it yourself?"

Shen Yifei chuckled: "My Five Elements Demonic Qi is still half-baked, nowhere near as pure as yours. You are the origin of the Five Elements. Once the origin is revealed, all things are reborn."

Jinbao was flattered by his compliments, puffed out her chest, and her two pigtails stood up: "You're a smart kid, you know what I'm capable of. But..."

Her eyes darted around, glancing at Ye Ling beside her. "I alone aren't enough; you two need to work together. That old bastard Huo Xin drained this demonic vein to its last breath. To revive it, we need to infuse it with both Yin and Yang primal forces. You alone, with your strong Yang energy, will burn the foundation of the demonic vein. I've shared half of your wife's Yin metal energy with you, which is perfect for you."

Upon hearing this, Shen Yifei was overjoyed: "That's great! My wife and I can work together, achieving perfect harmony, and become invincible."

"Don't get cocky." Jinbao snorted. "This is delicate work, not the kind of brute force you two do. You two have to follow my instructions."

The source of the demonic vein is a huge underground cavity. Originally, a powerful river of demonic energy should have flowed out from the ground, but now only a dried-up riverbed remains.

Jinbao had the two sit facing each other, their palms touching.

"Listen carefully. I'll first use golden energy to cleanse the foundation of the demonic veins and clear out those withered meridians. You two cooperate with me and inject the golden energy into it together. Note that you must be in sync; you can't be faster than her, and she can't be faster than you."

Shen Yifei and Ye Ling exchanged a glance; they understood each other perfectly and had that much tacit understanding.

Jinbao transformed into a ray of golden light and burrowed into the ground. After about the time it takes to brew a cup of tea, a muffled sound came from the depths of the ground. Immediately afterwards, a golden pillar of light shot into the sky from the crack and spread out in the air.

"Ready!" Jinbao's voice came from underground, "Three, two, one... pour!"

Shen Yifei and Ye Ling simultaneously activated the golden energy within their bodies. Two streams of golden energy flowed along their meridians to their palms, converging into a golden torrent that poured into the crack beneath their feet.

The golden energy flowed downwards along the withered demonic meridians. At first, it flowed smoothly, but the deeper it went, the greater the resistance became.

"You two move together, don't stop! Keep going!" Jinbao's voice came from underground.

Shen Yifei gritted his teeth, and the small vortex in his dantian spun wildly, pouring out all the golden energy in his body. Ye Ling was also giving it her all, her palms becoming scorching hot.

"Hmm..." Shen Yifei couldn't help but groan as he was burned.

Although their palms were hot, the two kinds of metal energy, yin and yang, circulated within their bodies before being expelled, and the feeling was incredibly exhilarating.

One spray, one blast of pleasure.

Ye Ling frowned, her cheeks flushed slightly, clearly feeling the same way.

The two kinds of metal energy, Yin and Yang, gave the two different feelings, yet they could also sense each other's feelings.

No wonder Liu Mengli called it a dual cultivation artifact; it really is incredibly addictive.

"Hold on, don't get distracted." Jinbao's voice came again, "Don't let your minds wander! The foundation of the demonic vein has been revitalized, so continue to increase the intensity and let the golden energy flow through the newly grown meridians again."

The two dared not delay and could only endure the tingling sensation that made their legs weak as they desperately poured golden energy into the ground.

He didn't know how much time had passed when he vaguely heard a "plop" sound coming from deep underground, as if something was bubbling up.

Immediately afterwards, a faint, warm aura emerged from the crack, spiraling upwards along the rock wall.

The aura grew stronger and hotter, like a hot spring that had been accumulating for a long time finally finding its outlet.

"It's done!" Jinbao burst out from underground, his body gleaming with golden light, his two tufts of hair standing straight up. "The demonic vein has been revived, but it's just a newly sprouted bud, still very tender. You two need to water it for another two days to let it grow more stable."

Shen Yifei and Ye Ling exchanged a glance, both seeing a hint of weariness in each other's eyes.

"Two days it is, honey, let's get back to work."

For the next two days, Shen Yifei and Ye Ling spent almost every day at the source of the demonic vein, infusing the newly formed demonic vein with golden energy according to Jinbao's instructions.

On the morning of the third day, a thin stream finally emerged from the dried-up riverbed underground. Although the stream was small, it carried pure and abundant demonic energy, meandering through the riverbed.

Zhan Lie stood in the center of the training ground early in the morning, feeling the warmth rising from his feet. He stood there stunned for a while before turning around and shouting towards the Demon Palace, "The Demon Vein is alive! The Demon Vein is alive!"