In this place, there are a dozen refining furnaces, along with a large amount of artifact refining materials and some weapons that have succeeded or failed in the refining process.

At the center of the secret room, there stands a gigantic refining furnace, within which burns a raging flame. The temperature and power of this flame are terrifying, even more powerful and dreadful than the fusion power of the two Saint Fires that Xiao Yifeng possesses.

And in front of this refining furnace, a white-robed, disheveled elder sits cross-legged. It is clear that this person is the Master Tiangang referred to by Dong Pengfei.

"Grandpa!"

At this time, Little Si walked up to the elder and affectionately called out.

This Master Tiangang lifted his head, letting his long hair fall aside, revealing a face covered with beards and wrinkles.

"This Master Tiangang’s strength is formidable!"

Xiao Yifeng thought to himself as he looked at Master Tiangang.

Although he couldn’t see the realm of a Dominator Realm expert, having been the Master of the Starry Sky in his previous life, he can still roughly judge their strength.

This Master Tiangang’s pure martial path strength surpasses Dong Pengfei’s by a great deal, and is even stronger than Ling Xiuyuan’s, at least at the Eighth Level Mastery Realm, perhaps even a Titular Dominator.

This Holy City truly lives up to its reputation as the number one city in the Ancient Realm East Continent, filled with hidden dragons and crouching tigers.

Before, there was Elder Dugu, now there’s Master Tiangang, and also the never-revealed Lord of Holy City, each unfathomable.

"Little Si!"

Master Tiangang looked at Little Si with a kind smile on his face, reaching out to pat her head.

Then Master Tiangang’s gaze swept towards Xiao Yifeng:

"So you’re the one wanting to trade for Purple Luo Stone and have me and Dong Pengfei help you upgrade your weapon?"

"That’s right, it’s me. As for compensation, I have fifteen artifact refining methods that the master absolutely hasn’t seen and three refining techniques."

"I assure you that these are things the master has never seen before. With these, I believe it could advance the master’s art of refining to the next level."

Xiao Yifeng said with a smile, knowing well that these items are absolutely enticing to artifact refiners.

It’s a good thing he unlocked the fourth layer of the Yin-Yang Forbidden Tome last night, otherwise he wouldn’t know what to offer to win over these refining masters.

Of course, given time, he might not even need these refiners because he could refine powerful weapons himself, possibly even better than those they craft.

But now his skills in refining have just begun, and he can’t yet craft very powerful weapons, that’s why he sought help from others.

Master Tiangang’s eyes flickered as he said, "Show me what you’ve got first before we talk!"

Then Xiao Yifeng handed over the fifteen artifact refining methods and three major refining techniques to Master Tiangang, all of which are precious contents from the fourth layer of the Yin-Yang Forbidden Tome.

Each artifact refining method can greatly enhance success rates, and even that era’s refinement grandmasters couldn’t possibly possess these, gaining them means even Eighth-Order artifact refiners might craft divine weapons.

Like Dong Pengfei, upon seeing these things, Tiangang’s face was filled with utter disbelief.

Eyes wide open, he became wholly absorbed, unable to extricate himself for a long time.

"What’s happened to Grandpa?"

Little Si curiously looked at her grandfather.

"He’s fine!"

Xiao Yifeng smiled faintly.

After a long while, Tiangang came back to his senses, looking at Xiao Yifeng with an incredulous expression.

"How did you come by these things? These refining techniques and methods appear even ancient refinement grandmasters could never own, how did you obtain them?"

Tiangang asked Xiao Yifeng seriously.

"This is my personal secret, inconvenient to disclose. But I wonder if these items are enough to trade for the master’s Purple Luo Stone and enlist your aid!"

Xiao Yifeng said.

"If someone else presented these, even if you offered Artifact Ranking divine weapons or elixirs to boost my strength, I wouldn’t lend a hand, but you’re exceptional; what you’ve shown me I can’t refuse!"

Tiangang said, with a wave of his hand, a purple stone like glass appeared in Xiao Yifeng’s hand, precisely the artifact refining material Purple Luo Stone.

"Thank you, Master, when will you be available? President Dong is waiting for you at the Artifact Refiner Association, he said if you’re willing to assist, he guarantees to elevate my Imperial Weapon’s rank to a superior-grade divine weapon, and I also have Purple Ore!"

Xiao Yifeng said.

"With your given refining techniques, plus Purple Luo Stone and Purple Ore, alongside both me and Dong Pengfei, if we can’t elevate your weapon to a superior-grade divine weapon, then I’d deserve to die."

"But upgrading a weapon’s grade is more challenging than crafting one from scratch, but I promise to deliver a superior-grade divine weapon, I, Tiangang, keep my word!"

Tiangang declared.

"Thank you, Master!"

Xiao Yifeng expressed his gratitude.

"No need to say these things, compared to what you’ve given me, what I’m doing is nothing!"

Tiangang stood up, shaking his head.

"Kid, I see you’re an outstanding person, plus with what you’ve given me, it’s a fateful encounter between us, I have a treasure here, do you want it?"

Tiangang looked at Xiao Yifeng with a smile on his lips.

"What treasure?"

Xiao Yifeng’s eyes flashed with curiosity.

Swish!

Tiangang waved his hand and a blinding light flashed out, causing Xiao Yifeng and Little Si to blink.

An azure longsword floated in the void, its blade wide and slender, the hilt etched with an unusual pattern.

At this moment, the sword emitted a continuous ringing sound, containing a fearsome sword intent, while Xiao Yifeng sensed a destructive aura within the sword.

It felt as though if the sword’s power were released, it would annihilate everything, possibly leveling the entire courtyard in an instant.

And as Xiao Yifeng probed the sword, a sensation of unease arose within him, as though a primordial beast lay within the sword’s body, ready to devour him whole.

"This sword is called the Heavenly Nether Divine Sword, ranked fourth on the Artifact Ranking!!"

Tiangang stated.

"Heavenly Nether Divine Sword? Fourth on the Artifact Ranking!"

Xiao Yifeng exclaimed, surprised that Tiangang would have the fourth-ranked divine weapon and offer it so casually to him.

Little Si also wore a look of surprise, with cherry lips slightly parted, she addressed her grandfather:

"Grandpa, this sword, Tianyan and Brother Tianhu always wanted it, yet you never gave it to them, and now you easily hand it to an outsider!"

"While they have potential, they aren’t yet capable of wielding this sword. It’s called the Heavenly Nether Divine Sword because it seals within it the beast soul of a legendary Heavenly Nether Divine Beast!"

Tiangang explained.