In the Demon Suppression Division, the Iron-Cutting Sword Technique is perfected

The deep underground palace was filled with the smell of dust. The once majestic and solemn stone statues have now turned into rubble and scattered all over the ground.

The empty martial arts field was silent, revealing an indescribable desolation.

After the matter was over, Gu Cheng did not rush to leave this place, but turned back to the futon in front of the piano table and sat cross-legged.

The illusory flames around the underground palace reflected his face, flickering, just like his fluctuating mood at this time...

Although he missed the spiritual sea inheritance of Venerable Qinglian during this trip to Falling Star Lake, the opportunity he got unexpectedly was far beyond his expectations.

Especially the top-grade demon servant in the spiritual sea realm, and the corresponding demon servant sacrifice and training method.

For Gu Cheng, who possessed the growth-oriented practice "The True Meaning of the Four Spirits", the value of these two things is even higher than the spiritual sea inheritance!

Gu Cheng looked around and had made a decision in his heart.

"This underground palace has many restrictions set by the Qinglian Venerable, which can isolate the outside world from perception. It is an excellent place for retreat..."

"I still have a lot of life to squander. Why not take this opportunity to try to sacrifice this dragon demon servant?"

Thinking of this, he took a deep breath, suppressed the surging expectations and excitement in his heart, and took out the crystal ball from the storage bag.

The dark blue light emanated from the inside of the sphere, reflecting on his face, adding a bit of demonic aura to it.

Gu Cheng opened the panel and poured his life into the "Thousand Demon Record".

The number behind the remaining life began to decrease rapidly...

[First year: You began to practice the Thousand Demon Record. As the most precious demon servant sacrifice method in the Hundred Beasts Villa, this secret method is extremely obscure and difficult to understand, and it requires extremely high spiritual strength.

Fortunately, with your innate ninth-level spiritual cultivation, you can practice it easily. 】

Different from those martial arts that require extremely high comprehension to practice.

As a secret art of refining demon servants, this "Thousand Demon Record" focuses more on persistent practice and investment in external resources.

As long as you are willing to work hard, you will eventually learn some tricks.

Coincidentally, for Gu Cheng, the thing he lacks the least is time.

After a wasteful practice, the proficiency of this secret art began to rise at a speed visible to the naked eye, and he kryptoned all the way to the state of great perfection.

[Four Hundred and Eighty-three Years: After days and months of hard practice, you finally mastered this method of refining demon servants.

On this basis, you combined the special characteristics of your own system, learned from each other's strengths and weaknesses, and found another way to create a very special method of refining. 】

[Secret Technique·Thousand Demon Record: Perfection]

[Remaining Lifespan: 3,176 Years]

"..."

Gu Cheng slowly opened his eyes, and a strange color flashed in the depths of his dark eyes.

"No wonder the Hundred Beasts Villa dared to challenge the Famous Sword Villa. Just looking at this family background, it is really unfathomable..."

He murmured in a low voice, with a hint of sigh in his tone.

This "Thousand Demon Record" is the secret of the Hundred Beasts Villa. The content inside can be said to be extensive and profound.

In addition to the most basic method of refining demon servants, it also records countless actual combat cases. It can be called the "Huanggang Secret Scroll" of the way of demon servants.

And these thousands of registered demon servant refining cases, in the final analysis, are inseparable from two types of refining schools.

The first school is called the "Incubation Method".

As the name suggests, it is to place the demon soul in a special crystal ball, supplemented by formations, demon cores and other natural treasures, just like hatching life, to ripen the demon servant.

The crystal ball that Venerable Qinglian gave to Gu Cheng was an 'egg' made by the egg-hatching method.

This method is the most convenient and can greatly shorten the refining time. No matter how powerful the demon servant is, it can be refined by this method.

However, there are gains and losses.

The strength of the demon servants ripened in this way will naturally be greatly reduced, and at most they can only exert 50% of the strength of the demon body.

However, for the top-grade demon servants, this is not an unacceptable defect.

The top-grade demon servants have two amazing features: one is that they can be reborn even if they are damaged, which can be called immortal; the other is that they can be passed down from generation to generation and continuously strengthened by future generations.

As long as the family bloodline continues, the strength of this top-grade demon servant will eventually become stronger and stronger.

This second school is called the 'embryo method'.

This method uses the spiritual sea of ​​the cultivator's own mind as a furnace, integrates the demon soul into it, and slowly nurtures and refines it with his own mind.

In stark contrast to the 'egg hatching method', this 'embryo method' relies entirely on the cultivator's own mind, and it is difficult to quickly achieve it with the help of external forces, so it takes a long time, just like a ten-month pregnancy.

However, the demon servants refined by the 'embryo method' can at least retain more than 90% of their predecessors.'s strength, and is in tune with the master's mind, and can exert even more powerful power.

The little bird demon servant of the Spirit Bird Venerable, who is like an incarnation of his body, is obviously made through the "embryo method" and has many wonderful uses.

Unfortunately, this method is too time-consuming and cannot be used with external forces, so it is only suitable for refining some demon servants with good foundation but low grade.

And Gu Cheng's original "third method" combines these two methods of sacrifice and refining.

Like the embryo method, it can retain the strength of the demon servant to the greatest extent.

It can also refine a higher-grade demon servant by absorbing external energy like the egg hatching method!

"But correspondingly, this third method is also the most consuming. It not only requires a huge amount of lifespan, but also requires various natural treasures as assistance."

"Only someone like me who has a life-saving system can be so extravagant..."

Gu Cheng sighed, then looked at the sleeping dragon shadow in the crystal ball in his hand, and a hint of determination flashed in his eyes.

The egg-hatching method left by Venerable Qinglian is indeed safe, but it runs counter to the ultimate path he pursues.

As the saying goes, there is no construction without destruction.

Since he has chosen the third method that suits him best, the framework that Venerable Qinglian had built before must be torn down and rebuilt!

Taking a deep breath, Gu Cheng closed his eyes and concentrated, and a powerful divine thought surged out like a tide, wrapping the crystal ball.

Buzz——

The crystal ball suddenly glowed with a faint blue light and slowly floated in the air.

Gu Cheng's mind moved again, and the powerful divine consciousness of the ninth level of the innate realm was like a pair of invisible giant hands, pulling out the soul of the spiritual sea dragon in the crystal ball bit by bit, and slowly dragging it into his sea of ​​consciousness.

Crack!

The crystal ball shattered in response, turning into starlight and dissipating in the air.

The black dragon sleeping in it suddenly opened its eyes, and its golden demon pupils were full of violence and cruelty.

The originally silent demonic aura suddenly surged, making the surrounding air seem to be stained with ink and become extremely sticky.

"Roar!!!"

The soul of the black dragon roared to the sky, and the deafening dragon roar resounded through the world.

The terrifying pressure spread, causing the entire underground palace to shake violently, and even the calm Falling Star Lake outside was set off by huge waves!

"Be honest!"

Gu Cheng remained calm, his clothes rustled, and his powerful divine consciousness turned into invisible shackles, suppressing the crazy black dragon.

This Linghai Realm dragon was indeed extremely powerful when he was alive, but now only a remnant soul remains, having long lost self-awareness and 99% of its strength.

Under the suppression of Gu Cheng's powerful divine consciousness, it could only roar unwillingly, and was finally sucked into Gu Cheng's body like the Great Demon King Piccolo who was sealed by the "Demon Sealing Wave".

In an instant, Gu Cheng felt as if there were thousands of demons roaring in his body, and the terrifying demonic aura was raging wildly. His eyes instantly turned blood red, as if he would go crazy at any time.

"Tsk, I really underestimated the remnant soul of this Linghai Realm dragon..."

Gu Cheng groaned, quickly gathered his mind, and began to infuse his lifespan to speed up the suppression of this violent power.

[First year: You introduced the remnant soul of Jiao Lao Er into your body, trying to use your own sea of ​​consciousness as a furnace to sacrifice it into your own demon servant.

However, the power of the residual soul of the dragon in the Spiritual Sea Realm is far beyond your imagination, and the surging demonic energy is even far greater than the demon core of the same level!

Although you have made all the preparations, you still fall into the illusion woven by the demonic evil...】