Unlike explosive techniques like the Heavenly Demon Reincarnation Technique, which involves infusing the Heavenly Demon's essence into the body, attempting to merge with the Heavenly Demon's essence, and even modifying the physique, this technique is different.

The Demonic Qi Nourishing Heart Technique can indeed only serve to nourish the body, subtly and gradually allowing one to accept the origin of the Heavenly Demon, but it may not necessarily align with the Dao. It merely strengthens the body's resilience.

"It seems that the cultivation method developed by the Yangxin Temple is used to deal with the demonic chaos in the Northern Region, so that they can continue to condense demonic crystals in the demon cave. The purpose is to coexist with the demonic energy and achieve immunity."

"However, in the illusion, they couldn't even activate this technique, which caused the Heavenly Demon Source to affect their will, thus driving them into madness."

"This Demonic Qi Nourishing Heart Technique isn't very effective in combat, but if I use it to nourish my body, it might continuously increase my acceptance of the Heavenly Demonic Origin."

Lin Jinglong already had an idea.

Compared to the so-called Heavenly Demon Heart Refining Array, this Qi Cultivation Technique, a basic cultivation method, is more suitable for him.

Like the Heavenly Secrets, the Heavenly Demon Origin is something that will overload Lin Jinglong if taken in excess, and his physical body also has a limit to its capacity to bear it.

However, with the enhancement of the Demonic Qi Nourishing Heart Technique, he will bear more and more Heavenly Demonic Origin, and his physique will be continuously strengthened by the Heavenly Demonic Origin, thereby taming more Heavenly Dao Origin.

"The secrets of heaven that I currently possess are far from sufficient."

After all, he still needs to win this battle.

Not long after, Lin Jinglong extracted over a hundred strands of heavenly secrets from them. He absorbed some of them himself and planned to give the remaining sixty strands to Bai Yiyi later.

She will become the eighth member of the Ten Heavenly Clans, leading the Heavenly Dao Supreme Alliance to break away from Lin Jinglong, but in reality, he will still be in control.

"Let's head to the demon's lair."

After packing up, Lin Jinglong continued on his way.

He had not forgotten his goal: to use the demonic sword to devour all the primordial essence of the demonic cave and store it within.

This will resolve the once-in-a-millennium demonic chaos in the Northern Region.

Lan Yuexin, standing to the side, dared not be negligent in the slightest and quickly followed in Lin Jinglong's footsteps.

Meanwhile, deep within the Second Demon Cave of Fengbei City, in a hollow, utterly dark space.

A robust old man suddenly emerged from the cave, shirtless, his eyes gleaming with an eerie light, and he was breathing heavily.

"Who? Who killed my men!"

"Are you looking for death?"

"I'll definitely settle this score with you!"

His figure rushed out of the cave and headed out of the Demon Cave. There were also a few lower-level disciples who were exploring and condensing magic crystals inside the Demon Cave. They all looked disheveled.

"Get out here, all of you!"

The old man let out a whoosh and his figure swept past them.

At the exit of the Demon Cave, dozens of members of the Yangxin Temple quickly gathered. When they heard their grandmaster so angry, fear appeared on their faces.

What happened?

"Master and the others went outside earlier. I heard there were enemies. Could it be that something happened to Master and the others?!"

"They are all cultivators at the Dao Integration stage. Apart from our grandmaster, our eldest grandmaster is the strongest. Could he really be defeated?"

"But we haven't heard a single word from them!"

"..."

The crowd that was working earlier became restless. They didn't know what had happened, so they quickly followed their master, Wan Lingzi, to the outside of the Demon Cave.

Just as they went out, they ran into Lin Jinglong.

The members of the Demon-Slaying Palace have dispersed to the surrounding areas and begun to suppress the demonic energy emanating from the Demon Cave using the Heavenly Dao Grand Array.

Lin Jinglong stood outside the Demon Cave, his gaze sweeping past the burly and crazed Wan Lingzi before looking at the Demon Cave behind him.

"It seems that the demonic energy in this demon cave has not yet fully erupted, otherwise the surrounding area would not be so imposing. However, it won't be long before it does."

Lin Jinglong made a judgment.

Fortunately, he arrived in time.

Otherwise, not to mention other places in the Northern Region, at least the tens of thousands of residents in this city would be doomed to die.

At this moment, the burly old man stared intently at Lin Jinglong, muttering under his breath.

"You're Lin Jinglong?"

You know me too?

Lin Jinglong said with a smile.

"Hehe, how could I not recognize you, the personal disciple of that old monster from Qinglong Temple?"

"It's not easy to even know my master."

Lin Jinglong chuckled.

His master, Daoist Qinglong, had a mysterious background. Even he didn't know who he came from. Only a powerful figure like Daoist Yunxian, who also belonged to a secretive force and had been hiding behind the scenes for at least several hundred years, would have some knowledge of his master's background.

However, it seemed that the old man at the Yangxin Temple had also had contact with the master, but Lin Jinglong suddenly noticed this from the aura emanating from him.

"Your Demonic Qi Nourishing Heart Technique has reached the point of demonic possession. In order to delve deeper into the demonic cave and control more demonic energy, you can no longer maintain the balance between spiritual and demonic energy in your body. You will probably fall into demonic possession soon."

"you……"

Lin Jinglong's sudden discovery, and his frankness, made Wan Lingzi's expression even more gloomy. The disciples behind him, looking at their master's bare upper body and the terrifying demonic energy emanating from him, also felt that what Lin Jinglong said made a lot of sense.

In fact, they had noticed it too.

It seems that the Grandmaster's Demonic Qi Nourishing Heart Technique is no longer effective, otherwise why would he be in such a strange state?

At this moment, Lin Jinglong continued, "You still have a chance. If you are willing to turn back, I can remove the demonic energy from your body. Once you return to Yangxin Temple, you should not come out to stir up trouble again."

"When I get old, I'll go back to my hometown to retire."

"The martial world is no longer suitable for you."

Upon hearing Lin Jinglong's slightly sarcastic voice, Wan Lingzi was instantly enraged. He roared, "Just like your master. When I sought his help because of demonic energy entering my body, he said the same thing to me."

"So you do know my master, and you even sought his help." Lin Jinglong looked at the other person with a smile. "Since my master has spoken, why not act according to his instructions?"

"Heh, you want me to give up this demon cave and the refining of demon crystals? Why should I? This is the foundation for my Yangxin Temple to rise in the world and dominate the region!"

After he finished speaking, he rushed towards Lin Jinglong with a whoosh.

Behind them, the disciples all closed their eyes. Their grandmaster would lose his mind from time to time and would kill them at the drop of a hat. Who would dare to provoke him?

Only Lin Jinglong dared to provoke him.

"That guy is about to be torn to pieces, yet he dared to anger our grandmaster. He's courting death!"

Someone behind them made a gloating sound.