I have changed my destiny and become an unparalleled immortal.

"Wanyin's life was given to her by her senior. Today, Wanyin will return this life to her senior!"

Su Wanyin closed her eyes, and a dazzling golden light emanated from between her brows, directly igniting her golden core and divine soul!

"Sunset Dharma Image, protect!"

The illusory image of the setting sun desperately resisted the hundred-foot-long blood-red blade that was slashing down.

"No!"

Gu Yun's eyes widened in despair as he let out a desperate roar and charged forward madly.

"Bang, snap!"

The stalemate lasted only half a breath.

The difference between the early stage of the Golden Elixir and the Great Perfection of the Golden Elixir is like heaven and earth.

The phantom shattered like glass.

The enormous Blood-Transforming Demon Blade slashed down without any hindrance.

"laugh!"

Blood splattered.

Su Wanyin's slender body was pierced directly by the terrifying force of the demonic blade.

It fell helplessly from mid-air.

"Evening Sound!"

Gu Yun rushed forward and caught her falling body.

Blood instantly stained Gu Yun's blue robe.

A huge bloody hole appeared in Su Wanyin's chest; her golden core shattered, and her life force was drained away.

Gu Yun trembled all over.

"Why...why are you being so foolish..."

Gu Yun's voice was hoarse, and his eyes were bloodshot.

Su Wanyin lay in Gu Yun's arms, blood gushing from her mouth, but her eyes were incredibly bright.

She trembled as she reached out her blood-soaked hand, wanting to touch Gu Yun's cheek.

"Senior...don't be sad..."

"Wanyin's life... was already given an extra thirty-one years..."

Her voice grew weaker and weaker, and her eyes began to glaze over.

"To be able to see my senior one last time before I die... Wan Yin... I can die without regrets..."

Her voice was as soft as a whisper, yet it carried a hint of relief and contentment.

"For the past thirty-one years... Wanyin dared not sleep... dared not stop... I was so afraid... so afraid that I wouldn't be able to keep up with your pace..."

"Actually... Wan Yin knows she's not very talented... To be able to see her senior one more time... Wan Yin... can die without regrets..."

The hand that was raised halfway in the air ultimately failed to touch Gu Yun's face and fell limply to the ground.

White robes stained with blood, a beautiful woman's life extinguished.

"..."

Gu Yun stood there blankly, holding Su Wanyin's gradually cooling body, as if his soul had been drained away.

The surrounding wind seemed to stand still at that moment.

Within the Purple Palace.

The Dao Foundation, representing sorrow and anger, erupted with an unprecedentedly dazzling red light at this moment, and the violent tremor made the entire sea of ​​consciousness seem to collapse!

Gu Yun slowly raised her head.

His silver hair suddenly turned faintly blood-red, and his originally dark eyes turned completely into a chilling scarlet.

"Old dog..."

Gu Yun's voice seemed to crawl out from the deepest part of the Netherworld, carrying a killing intent that could freeze the soul.

"Hahaha! Great!"

The Yin Sha Old Demon in mid-air laughed wildly, completely disregarding Gu Yun's anger.

"Since she took a knife for you, you can go down and join her now!"

The old demon raised his hand again, preparing to launch the final, fatal blow.

Just then!

As if experiencing a final burst of energy before death, Su Wanyin flew towards the old demon!

Boom!!!

The destructive energy of the Golden Core self-destruction exploded without warning!

The violent energy storm transformed into a gigantic mushroom cloud, soaring straight into the sky!

"Damn it!"

The Yin Sha Old Demon's expression changed drastically. The distance was too close, so he had to withdraw his magic power. He held his bone shield firmly in front of him, but he was still thrown back hundreds of feet by the aftershock of the self-destruction and spat out a mouthful of blood.

The crimson barrier that sealed off the heavens and earth was also torn open by the force of this self-destruction, creating a crack several meters wide!

At the eye of the storm, Gu Yun's back was blasted to pieces, his internal organs almost displaced.

But he didn't utter a sound.

He knew that this was the last way out that Wan Yin had risked her life to create for him.

Fighting desperately now will only make her sacrifices futile!

Gu Yun gave the Yin Sha Old Demon in the distance a deep look, as if he wanted to devour him alive.

"The Hehuan Sect... that treacherous old dog..."

Taking advantage of the moment when the barrier crack had not yet closed and the spatial blockade was briefly broken.

Gu Yun took out the teleportation talisman given to him by Mo Qianyan and crushed it in one go!

"Whoosh!"

Space distorted for a moment, and Gu Yun transformed into a stream of light, disappearing without a trace along the crack in the barrier.

"You bastard!"

The Yin Sha Old Demon dispersed the smoke and dust, looked at the empty earth, and was so angry that his beard and hair stood on end. His furious roar shattered the clouds within a radius of ten miles.

Eight hundred miles outside the Broken Soul Gorge, in an extremely hidden, cold and gloomy cave.

"Tick-tock...tick-tock..."

Gu Yun leaned against the cold rock wall, panting heavily.

His blue robe was already soaked in blood, and the flesh on his back, damaged by the explosion, was writhing, slowly scabbing over thanks to the powerful self-healing ability of the Great Wilderness Body.

"Evening Sound..."

He hated the Yin Sha Old Demon of the Hehuan Sect, but he hated his own powerlessness just now even more!

"No, I haven't lost yet, and Wan Yin can't just die like this."

Gu Yun forced herself to calm down.

He took a deep breath and sank his consciousness into his Purple Mansion Sea of ​​Consciousness.

Above the eleven Dao Foundations that exuded a terrifying aura, the blood-red butterfly mark formed from the Book of Destiny was quietly suspended.

[Current lifespan remaining: 385 years]

"Turning back time..."

Gu Yun stared intently at the red butterfly, her mind racing.

Returning to half an hour earlier, while it might prevent the tragedy from happening just now.

Even with Wan Yin's help, his body, which has just recovered and has not yet fully returned to its peak, is absolutely no match for the Yin Sha Old Demon, who is at the Great Perfection of the Golden Core stage and has been prepared!

To completely reverse Wan Yin's fate of dying in battle, the problem must be solved at its root.

He must kill the Yin Sha Old Demon!

"But this old dog is at the peak of the Golden Core stage; I'm no match for him in a head-on confrontation. The only way is assassination!"

A sharp glint flashed in Gu Yun's eyes.

"I was sealed in a lightning-struck wooden coffin by Qianyan Bing, and slept for eighteen years. For those eighteen years, to the entire Cangbei Spirit Realm, I was a non-existent dead man!"

"If I used the Crimson Butterfly to turn back time to a certain point in these eighteen years and assassinate the Yin Sha Old Demon, because at that time, I was lying underground in Falling Star Valley!"

Moreover, in order to avoid causing too much change in the course of history and causing the fates of Qianyan, Chengfeng, and others to deviate, the timing of his killing of Yinsha Old Demon had to be extremely precise.

When are cultivators at their weakest?

The moment of breaking through to a higher realm during seclusion!

If one can break through to the Great Perfection of the Golden Core stage by defeating the Yin Sha Old Demon.

By striking at the moment when his qi and blood are at their weakest after surviving the tribulation of lightning, he can not only kill the man instantly, but also create the illusion that he has "gone mad with qi and died," thus minimizing the butterfly effect on the present world!

"If the Yin Sha Old Demon had died more than a decade ago, he wouldn't be here in Broken Soul Gorge today! And Wan Yin wouldn't be dead!"

Having clarified this layer of cause-and-effect logic, Gu Yun suddenly understood.

He used his icy aura to temporarily seal Su Wanyin's body in a specially made storage ring.

"Wanyin, wait for me."

Gu Yun stood up, his bones cracking as he did so.

He pulled out a large black cloak from his storage ring.

...

Half a day later, on the edge of the Cangbei Spirit Realm, in the City of Sin.

This is a no-man's-land outside the jurisdiction of the major righteous and demonic sects. The city is a melting pot of all sorts of people, with rogue cultivators, demonic cultivators, and desperate criminals everywhere.

In the underground black market here, you can even buy the color of the underwear that the leader of a top-tier sect is wearing today, as long as you can afford the price.

Gu Yun completely concealed his aura, appearing like an ordinary martial artist with no cultivation, and walked into an intelligence outpost called "Night Owl Pavilion" deep within the black market.

Behind the dimly lit counter, a shopkeeper with a mustache and cultivation at the early stage of Foundation Establishment was fiddling with an abacus.

"I want to buy intelligence."

Gu Yun lowered his voice, which was hoarse and had a metallic quality to it.

The shopkeeper with the mustache didn't even look up: "Night Owl Pavilion's rules are that we charge according to the intelligence level, and we don't offer credit."

"The Supreme Elder of the Hehuan Sect, the Yin Sha Old Demon. I need the specific times and locations of all his breakthroughs in seclusion over the past eighteen years, as well as his condition after emerging from seclusion."

Gu Yun spoke coldly.

The shopkeeper with the mustache suddenly stopped fiddling with the abacus, looked up, and sized up Gu Yun with his triangular eyes.

He scanned the man in black robes with his divine sense and found that there was no trace of magical power on him. He was no different from an ordinary person, but his tone was frighteningly arrogant.

"A top-secret seclusion of a Golden Core cultivator at the Great Perfection stage? Sir, this is top-tier intelligence. The price... 100,000 low-grade spirit stones, not a single one less."