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Discord: e to the heaven dou auction house. Can I help you with something, honored guest?" The hostess politely greeted with a friendly expression.

"No, it's okay. I only want to check the auction house." Yunlong calmly replied, which makes the hostess frown a little.

"I see, have a great day then." The hostess walked away, but Yunlong could hear that she's clicking her tongue in annoyance.

"Tch, another country bumpkin, who is probably too poor to join the auction." The hostess whispered between her breath, making Yunlong shake his head.

'I'm not here for the auction, to begin with.' Yunlong commented while walking toward a particular room at the end of the corridor, the vice leader's office.

Knock! Knock!

Yunlong knocked on the door, and a black-haired man with a stoic expression, who is in his late thirties, opened the door.

"How was it?" Yunlong asked while entering the room.

"The preparation is complete." The vice leader closed the door and looked at Yunlong with a calm expression.

"Good, so where is the catalog?" Yunlong asked while sitting on the couch.

The vice leader nodded his head and grabbed a book from his working desk, which he handed to Yunlong, who casually took it with his left hand.

"Hmm, there are 14 slaves... Oh, there are also three spirit bones and a few rare medicinal herbs." Yunlong commented with a surprised tone as he viewed the data through to the book.

"What about the auction house's leader? He should be in the auction house, right?" He asked his puppet, who quietly nodded his head.

"Leader Gu is in the underground office. A few days ago, he fought ten thousand years old golden-horned wyvern, which gave him a spirit bone." The vice leader quietly reported, which makes Yunlong intrigued.

"So, he is probably trying to absorb the spirit bone in the underground." Yunlong smiled while thinking about something, and The vice leader only gave him a silent nod.

--- In the underground's base ---

"To think, you guys are able to build an underground's base this deep," Yunlong commented because both of them have been walking for nearly fifteen minutes, but he didn't sense the end of these spiral stairs.

"Because of an incident in the past, we are prioritizing the safety of our goods by building a deep underground fault, which is also a hidden room that the leader and I can only enter." The vice leader calmly answered like a dependable aide.

"Is that so?" Yunlong reacted while looking around the walls, which had a bunch of white-flamed candles.

As they arrived at the end of the stairs, a bright passage greeted them, which would lead them to the vault and the leader's office.

"Follow my steps," The vice leader said while walking toward the door at the end of the corridor, but Yunlong can see that he's moving in a weird pattern.

Yunlong observed the vice leader's steps for a few seconds, and when he arrived at the end of the corridor, he quickly used his shadow flash steps to arrive at his side.

"Wait, don't open the door first," Yunlong instructed the vice leader, who is about to open the metal door.

'Neo, scan this place for me.' He thought while waiting for his system's response.

[There are fifteen peoples in that room, one spirit saint and fourteen slaves]

"I see, the data is not wrong," Yunlong whispered while activating his shadow veil, which he used to conceal his and the vice leader's presence.

They silently entered the room, and a clean-looking room welcomed them, which made Yunlong frown because he can't sense the leader's presence.

"Save the slaves for me," Yunlong said to the vice leader, who nodded his head before he walked away to the vault's room.

[The spirit saint is behind that door, host]

Yunlong looked at Neo's pointed arrow, leading him into another door with a few weird patterns.

[Because the spirit saint is in deep meditation to absorb a spirit bone, he cannot sense anything more than 5 meters around his body]

[I also calculated that this room could endure a few titled douluo attacks]

'Thanks, Neo.' Yunlong thanked while gently opening the door, revealing an older man in his late sixties. He had a solemn expression and braided white beard.

Yunlong materialized his golden-threaded handkerchief and turned it into many goldish leaves. He hardened and enlarged them five times, which makes them look like a bunch of golden blades.

(An: Got it? Hardened and Enlarged?)

"Nothing personal. I only want to finish my quest," Yunlong calmly stated while looking at the leader, who released cold sweats from his forehead.

He naturally breathed while entering a stance, where he pointed his katana at the leader and closed his eyes.

'This is kinda low, but it doesn't matter as long as I am the winner.' Yunlong thought while running forward with significant momentum and did a few harmonious steps, which made him look like dancing.

He entered the five-meter area around the leader's body, which alerted him, but when he opened his eyes, a calm yet cold voice entered his ears.

[Unison Season Arts: Hidden Move, Way of the Sword]

"What?!" The leader suddenly felt great pain in his chest, which is spurting blood like a fountain.

"What happened! who are you!" The leader closed the wound with his hands, but it's futile because Yunlong's attack is not an ordinary sword attack.

Cough! Cough!

The leader coughed a mouthful of blood. He looked at Yunlong, who calmly stood in front of him with a sword in his hand.

"Heaven Dou Auction House's Leader, Gu Xin," Yunlong said while looking at the leader, whose eyes widened in shock.

"You're here to assassinate me, huh." Gu Xin responded with a wave of anger in his eyes.

"To think, They would send a kid to assassinate me... They certainly want me to die in embarrassment." He added while gritting his teeth because of the wound on his chest, making him feel intense pain.

Yunlong frowned when he heard Gu Xin's words because he didn't understand what he meant.

Gu Xin stood firmly on the ground and stared at Yunlong with a burning fighting spirit.

"Since you've come for my head, then I'll fight to the death?!" Gu Xin declared, which makes Yunlong even more confused.

'Huh, what the hell?' Yunlong thought while looking at Gu Xin, who suddenly transformed into a fifteen feet three-headed fire lion.

ROOOAAR!!

Gu Xin madly roared in his martial soul possession form while seven spirit rings rising from the ground, yellow, yellow, yellow, purple, purple, purple, and black spirit rings.

'It's good that his spirit ring's configuration is not optimal, but I can't let my guard down because I've never defeated a spirit saint before.' Yunlong thought while looking at the giant lion in front of him.

"Hell-Flamed Lion's Wrath." Gu Xin's voice echoed as the area around them changed into a burning hell, where a burning red flame illuminated it.

"Pierce..." Yunlong responded while controlling the golden blades to dart at the giant three-headed lion's body.

Roar!!

Gu Xin roared when he saw a bunch of golden blades flying at fast speed toward him.

"Flame's Guard."

A giant red barrier made of flame suddenly covered Gu Xin's body, which repelled Yunlong's golden blades.

"Hell-Flamed Bite!" Gu Xin roared as a massive silhouette suddenly appears below Yunlong's foot.

Yunlong got caught off guard as a giant lion's head with sharp teeth suddenly appeared below his foot.

He grabbed one of his golden blades, which he instantly transformed into another handkerchief and enlarged into a blanket that covered him like an egg.

Bak!! Boom!

"I become too cocky..." Yunlong whispered while looking at the sharp teeth that pierce through his defense.

He calmly breathed while looking through his defense gap, which enabled him to see the three-headed lion, who madly laughed.

"Hahaha, I'm not going to die. Gu Xin would never die!" The three-headed lion roared while hell-flame burned on his giant body.

'His spiritual level is higher than me, so my illusion won't work on him.' Yunlong calmly breathed while using his other martial soul, which transformed his right hand into a dragon-scaled arm.

"Fine... Since you want to play with fire, I will play with fire too," Yunlong muttered while coldly staring at the giant three-headed lion.

"Hmm? You're not dead?" Gu Xin frowned when he sensed Yunlong's presence out of his hell-flamed bite attack.

Yunlong calmly stood above the ground and dashed forward while entirely using his vajra body to the maximum level, making a heavy aura come out of his body.

[Vajra body 100%]

[Bloody Rage]

[Calm Mind]

[Tri-Thunder Sun Activated]

'Let's see how you handle this...' Yunlong coldly thought while activating his sharingan, which merged with his dragon-slitted eyes.

"Rumbling Black Dragon Fist." Yunlong pulled his right fist back, making a silhouette of a black dragon's head rose in the air.

Gu Xin's eyes dilated when he saw the black dragon's head silhouette because his giant body suddenly feels heavy and can't be controlled.

'Move! Move, or I'll die in here!' Gu Xin thought, but it was useless because Yunlong's sword intent earlier already corroded his body from the inside.

BAAAAM!

CRACK!! KACHA!

Yunlong punched Gu Xin's flame barrier, which was instantly destroyed by the sheer power of his fist. But, his punch didn't stop there because it suddenly launched a black dragon's head at the three-headed lion.

BOOOOOM!!

"Fall!" Yunlong controlled his golden blades to fall toward Gu Xin's body that's unprotected after he destroyed his flame barrier.

Stab! Stab! Stab! Stab! Stab! Stab! Stab!

A cloud of dust flying in the room, and the flame domain that Gu Xin created disappeared, which happened because he's on the verge of death.

"Kill me... I can't live in shame after a kid defeated me. Kill me!" Gu Xin coldly breathed while looking at Yunlong, who stood in front of him with a burning dragon arm and red-slitted eyes, which made him look like a devil.

A golden blade swiftly descended straight into Gu Xin's head, which killed him instantly.

[You have killed a spirit saint]

[Mortal Sin: Gluttony Activated]

[You have devoured a piece of spirit saint's soul, energy, spirituality]

[You have received Gu Xin's memory]

[You have obtained [Hell Flame] Skill]

Yunlong calmly heard Neo's notification as severe pain suddenly appeared in his right arm, full of burning wounds. historical

"I never used these combinations before. So my body can't handle it, huh." Yunlong whispered while using white light grace, which healed the burning wound, but he could still feel severe pain in his right arm.

He walked toward Gu Xin's body, which suddenly burned into ash, leaving two pieces of spirit bones.

[Name: Golden Wyvern's Horn]

[Type: External Spirit Bone]

[Grade: Rare]

[Age: 10.000 years old]

[Skill: Golden Dragon's Will]

[Name: Lion Flame's Guard]

[Type: Chest Bone]

[Grade: Rare]

[Age: 10.000 years old]

[Skill: Flame Guard]

"That's why he wanted to absorb this spirit bone because it's an extremely rare external spirit bone," Yunlong said while taking a pair of curved golden horns and a red-looking chest bone.