At this moment, the Unicorn King was in a pitiful state. It had lost its entire body, leaving behind only a vague mass of flesh and a single horn. Left unchecked, this mass of flesh could potentially regenerate and reform. After all, many Martial Kings have the ability to be reborn from just a drop of blood. How could a king-level exotic beast not possess an even more formidable life force and recovery capability?

However, Lin Fei grabbed the mass with his hand, where the Triple Yin True Fire resided. This fire continuously scorched the flesh to ensure it wouldn't instantly regenerate. But Lin Fei controlled the intensity of the fire so as not to turn the Unicorn King to ashes completely.

"Hanging Void Taoist Lord, is there anything else you need from the Unicorn King?" Lin Fei asked. "If not, I will end its life."

The Hanging Void Taoist Lord reached out and took the unicorn horn into his grasp. Nodding, he said, "Please proceed, Lin." He only wanted the horn.

With a resonating hum, Lin Fei's Triple Yin True Fire flared intensely, enveloping the Unicorn King's flesh. In the blink of an eye, the entire mass was reduced to ashes.

The mighty king-level exotic beast had met its end, slain single-handedly by Lin Fei. This spectacle sent a chill down the Hanging Void Taoist Lord's spine. Lin Fei's prowess surpassed his wildest expectations. Especially considering the four bloodlines Lin Fei had just revealed, coupled with the Saber World technique; his strength might be on par with a late-stage Martial King!

"Friend Hanging Void, you have the horn," Lin Fei stated while looking at the Hanging Void Taoist Lord. "Now, about the Nascent Soul magic treasure..."

"Hahaha, of course!" the Taoist Lord replied. "I am in your debt." With that, he promptly handed the Nascent Soul magic treasure to Lin Fei. Witnessing Lin Fei's formidable might, he certainly didn't want to provoke him. After all, if Lin Fei could defeat the Unicorn King, he could definitely defeat the Hanging Void Taoist Lord as well.

Upon receiving the Nascent Soul magic treasure infused with thunder, Lin Fei said, "Let's go." He transformed into a streak of light and swiftly left the wastelands.

The two Golden Core cultivators carefully returned, exchanging glances as they surveyed the aftermath.

"The Thundergrass..." the two murmured in unison. Their gaze turned to where the Thundergrass once stood. It was gone, reduced to ashes. The overpowering thunder that fell from the sky was too much for even the Unicorn King. The Thundergrass didn't stand a chance; it was completely obliterated.

"It's over, without the Thundergrass, everything's truly finished."

"Who was that Martial King? How is his power so terrifying?"

"To single-handedly slay the Unicorn King... it's beyond comprehension."

The two of them seemed a bit dazed. They were awestruck by the prowess of the Martial King and felt a deep regret that the Thundergrass had turned to ash. However, they were powerless to change anything.

"Let's go, we'll search elsewhere," one of them suggested, feeling dejected. They could only hope to find more Thundergrass in the surrounding areas.

...

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Upon returning to the Ancient Origin Sect, Lin Fei now had the Nascent Soul magic treasure; it was full of immense thunder power.

"Finally, I can cultivate the Supreme Yang Heavenly Thunder Bloodline," Lin Fei thought.

Entering the Dubhe Dao Artifact, Lin Fei took out the magic treasure. With a swift motion, he reached out to grasp the thunder. There was a crackling sound, and a bolt of heavenly thunder was captured in his hand.

"Your Supreme Yang Heavenly Thunder Bloodline has absorbed a sliver of thunder force. Cultivation progress increased by 1%."

It was just a tiny fraction. Lin Fei continued, encouraged by the constant updates from the system in his mind. It didn't take long for his Supreme Yang Heavenly Thunder Bloodline to break through.

"Your Supreme Yang Heavenly Thunder Bloodline cultivation progress has reached 100%."

"Your Supreme Yang Heavenly Thunder Bloodline has achieved Mastery."

Days turned into weeks, and nearly two months passed. Lin Fei was constantly cultivating the Supreme Yang Heavenly Thunder Bloodline within the Dubhe Dao Artifact. The thunder inside the Nascent Soul magic treasure wasn't enough for Lin Fei's Bloodline to reach perfection. Currently, it had barely reached transcendence.

Lin Fei still needed to spend time gathering more heavenly thunder. While this might be a hassle for others, with Lin Fei's Supreme Yang Heavenly Thunder Bloodline, he could actually attract heavenly thunder, which would then be collected by the magic treasure. This thunder would further aid in his cultivation, even if it took a considerable amount of time.

"System," Lin Fei called out, accessing the interface.

Host: Lin Fei

Martial Realm: Mid Stage Martial King

Supreme Saber Dao Bloodline: Perfection

Grand Yin Wind Dao Bloodline: Perfection

Triple Yin True Fire Bloodline: Perfection

Supreme Yang Heavenly Thunder Bloodline: Transcendence (Progress: 11%)

Saber World: Perfection.

Lin Fei's Supreme Yang Heavenly Thunder Bloodline had already reached the level of transcendence. Furthermore, there was still room for improvement. He only needed enough heavenly thunder.

By Lin Fei's estimation, it would take about a month for his Supreme Yang Heavenly Thunder Bloodline to reach perfection. However, Lin Fei could no longer seclude himself for cultivation. The two-month period was almost up. He had to escort the eleven Martial Sovereigns of the Ancient Origin Sect to the Tuyuan Secret Realm. If they missed this opportunity, they would have to wait almost another hundred years, as the Tuyuan Secret Realm only opened once every century.

"It's time to come out of seclusion," Lin Fei thought. He got up and left his chamber.

Lin Fei was in no rush to cultivate his Supreme Yang Heavenly Thunder Bloodline. After all, he had a lifespan of ten thousand years, plenty of time. Even if he were to delay a bit, it wouldn't matter much.

Soon, Lin Fei summoned the sect master of the Ancient Origin Sect and others, totaling about eleven Martial Sovereigns, which basically represented all the Martial Sovereigns of the Ancient Origin Sect.

"Greetings, Martial King!"

"Greetings, Esteemed Elder!"

The eleven Martial Sovereigns all paid their respects to Lin Fei. Now, Lin Fei held the title of Esteemed Elder in the Ancient Origin Sect, and he was also known as Martial King. Additionally, he was the Ancient Origin Saber King. Thus, he had various titles and even the sect master of the Ancient Origin Sect would salute him.

"Are you all prepared?" Lin Fei asked.

All eleven Martial Sovereigns of the Ancient Origin Sect were aware that they were heading to the Tuyuan Secret Realm. They collectively replied, "We are ready."

"I'm not exactly sure what the Tuyuan Secret Realm entails," Lin Fei confessed, "We'll figure it out when we get there. However, when you're there, don't be afraid to cause a stir. If there's an opportunity to enhance your strength, seize it without hesitation. If anything happens, I'll have your back."

Everyone felt reassured, their faces breaking into smiles. With Lin Fei, the "Ancient Origin Saber King" by their side, they felt completely at ease.

"Thank you, Esteemed Elder!"

"Alright, let's move out."

Without further ado, Lin Fei activated his Saber World, immediately drawing the eleven Martial Sovereigns into it. This Saber World, which was a realm of its own, could even be considered a secret realm. To draw a few Martial Sovereigns into it was no issue at all.

After securing the eleven Martial Sovereigns inside the Saber World, Lin Fei transformed into a streak of light, vanishing into the horizon.