Purple Crystal Illusion Flame!

"Sixteenth Grade Artifact Refining material - Taiyi Fire Gold."

"Seventeenth Grade Artifact Refining material Flame-Dao True Gold".

"Eighteenth Grade material, Star River Sand."

"Twentieth-Grade material, Fire Phoenix Emperor Gold!"

The Taihua Sacred Ground Elder were startled and dumbfounded when they saw the fist-sized, Twentieth-Grade Artifact Refining material, "Fire Phoenix Emperor Gold".

This piece of Fire Phoenix Emperor Gold ore is crimson red with Phoenix patterns on its surface, making it priceless.

Fire Phoenix Emperor Gold can be used to forge Supreme-Grade Dao Artifacts, and even precious treasures.

This piece of Fire Phoenix Emperor Gold was inside the Primordial Ancient Mine Shaft was not taken by the Five Great Innate Sacred Lands.

Xiao Fan asked in confusion, "Why didn't you take the Fire Phoenix Emperor Gold that you unearthed?"

The Exiled Sword Immortal replied, "Draining the pond to catch all the fish will leave no fish for next year. The Primordial Ancient Mine ancient mine is connected to the core of the Immortal Realm, allowing it to continuously draw upon the World Power. This small piece of Fire Phoenix Emperor Gold is rooted in the Primordial Ancient Mine, gathering the power of the underground Spirit Veins. After hundreds of millions of years, it can double in size. Therefore, it is not essential, and our Five Great Innate Sacred Lands will not take it easily."

"I see."

Lu Changsheng was relieved. The Five Great Innate Sacred Lands occupied the Primordial Ancient Mines, but they did not mine blindly. Instead, they mined in a planned way to ensure that the Primordial Ancient Mines would not be depleted.

Some top-grade Artifact Refining materials, if not used in a hurry, will be left in the Primordial Ancient Mine.

The rare minerals within the Primordial Ancient Mine were something even Lu Changsheng coveted.

The Eighteenth Grade material, Star River Sand, can be bestowed upon Disciple, with a chance to return a "Alioth Star Core".

If I were to bestow Artifact Refining materials such as Flame-Dao True Gold and Fire Phoenix Emperor Gold upon my Disciple, I wonder what kind of top-grade Artifact Refining materials he would return in return?

Unfortunately, the Primordial Ancient Mines were located in the territory of the Five Great Innate Sacred Lands, so Lu Changsheng could not easily take away these ores; at most, he could only trade with them.

"Master, it seems the temperature gets higher the further in we go."

Beads of sweat had appeared on Dugu Aotian's forehead.

Despite having absorbed a large amount of Spirit Fire, Lu Qinglian and Xiao Fan seemed to be completely unharmed.

The other disciples and Elders felt the intense heat emanating from the depths of the Primordial Ancient Mine, and some were already drenched in sweat.

"This Mine Shaft is rich in Taiyi Fire Gold, Flame-Dao True Gold, and even Fire Phoenix Emperor Gold. It's probably related to Earth Fire, so it's normal that it's a bit hot."

Lu Changsheng looked at the Exiled Sword Immortal, wanting to verify his guess.

The Exiled Sword Immortal nodded, but his expression was somewhat solemn. "This Mine Shaft does indeed lead to the earth's core, so it's rich in Fire Attribute ores, and the temperature is usually high. Disciples below the Immortal Emperor Realm cannot enter this Mine Shaft to mine; only Elders above the Immortal Emperor Realm can go down into the mine personally... I've been here a few times, but I've never seen it this hot..."

Lu Changsheng's eyes sharpened.

Could the shaking of the Primordial Ancient Mine be originating from the bottom of this Mine Shaft?

"This is Falling Ice Talisman, which can cure most types of Fire Poison in the world."

Lu Changsheng took out a stack of Talisman and distributed them to everyone.

"Eighteenth-Rank Talisman!"

How can this be allowed?

Many Immortal Emperor Realm Elders felt that it was a huge waste for them to consume the Eighteenth-Rank Talisman in this way.

Eighteenth-Rank Talisman are priceless to them, and even if they obtain them, they are generally reluctant to use them.

Lu Changsheng simply said calmly, "Save where you should, spend where you should."

Lu Changsheng channeled his True Qi into the Falling Ice Talisman in his hand, and a chill spread out, resisting the heat coming from all directions.

Other disciples and Elders also used Falling Ice Talisman to resist the heat.

[Ding! You have failed to reward your Disciple Lu Qinglian with the Eighteenth-Rank Talisman "Falling Ice Talisman," but the Disciple-Teaching Rebate reward has been lost.]

[Ding! You have failed to reward your Disciple Lin Qingzhi with the Eighteenth-Rank Talisman "Falling Ice Talisman," but the Disciple-Teaching Rebate reward has been lost.]

[Ding! You have failed to reward your Disciple Mo Huazhi with the Eighteenth-Rank Talisman "Falling Ice Talisman," but the Disciple-Teaching Rebate reward has been lost.]

Lu Changsheng hadn't originally intended to take on apprentices, but since he assigned them to his Disciples, the system considered it as such.

[Ding! You have bestowed upon your Disciple Yun Qianyue Eighteenth-Rank Talisman, "Falling Ice Talisman," and have received a ten-thousand-fold reward for mentoring her: Twentieth-Grade Talisman, "Ten Thousand Li Glacier Talisman."]

[Ten Thousand Li Glacier Talisman: A Rank Twentieth-Grade Talisman; a single thought can freeze ten thousand miles of ice.]

Twentieth-Grade Talisman!

This is really good stuff.

With treasures like these, you can never have too many.

Lu Changsheng put away the Ten Thousand Li Glacier Talisman, thinking it might come in handy sometime.

The deeper the group ventured into the Primordial Ancient Mine, the higher the temperature became, and the faster time seemed to pass.

Besides being rich in various rare minerals, Primordial Ancient Mines have another unique characteristic: the deeper you go into Primordial Ancient Mine, the faster time flows.

In order to improve their cultivation as quickly as possible, the geniuses of the Five Great Innate Sacred Lands once joined hands to explore the depths of the Primordial Ancient Mine. The Exiled Sword Immortal and others successfully became Great Perfection God Kings or even powerful Human Race.

"We must find the source of the anomaly as soon as possible, lest things get complicated."

Lu Changsheng was worried that the Taihua Sacred Ground might be attacked by the Demon Realm during this period, so he sped up his pace.

"What's going on? The temperature is getting higher and higher, even the Falling Ice Talisman can't withstand the heat?"

The further the Exiled Sword Immortal went, the hotter it became. Even the Eighteenth-Rank Talisman Falling Ice Talisman began to weaken, and Talisman spiritual power gradually dimmed.

A wave of heat hit them in the face, and the Daoist Robes of the Immortal Emperor Realm Elders were soaked with sweat, making them look as if they had been pulled out of a pool of water.

"Those below the God King Realm need not venture further; return the way you came."

Lu Changsheng knew that even God King Realm expert would find it difficult to withstand such intense heat, and that the presence of the Immortal Emperor Realm Elder would be of little use, so he sent them back.

"I see that the depths of this Mine Shaft are fraught with danger; I urge Your Sacred Lord to be extremely careful."

"We are waiting at the entrance for His Sacred Lord to come out."

The Elders of the Taihua Sacred Ground Immortal Emperor Realm also knew that they couldn't continue on their own; otherwise, they would only cause trouble.

However, the Primordial Ancient Mine had already shown some unusual characteristics, making the Elders realize that the Forbidden Grounds of the Immortal Realm was not easy to enter. Therefore, before returning, they all reminded Lu Changsheng.

Lu Changsheng nodded and continued to lead his Disciples and the Exiled Sword Immortal deeper into the area.

The more bizarre the Mine Shaft, the more likely it is to be the source of the vibrations in the Primordial Ancient Mine.

Deeper into the Primordial Ancient Mine, the higher the temperature, the stronger the repulsion from the World Power. Even with Lu Changsheng and the Exiled Sword Immortal's cultivation levels, they only managed to walk three thousand steps in an hour.

Beneath the Primordial Ancient Mine, magma is dense Fire Poison permeate the air.

In the middle of a lava pool as large as a lake, there stands a crystal tree, radiating a pale purple light, like a dream.

Lu Qinglian exclaimed, "Master, how can there be trees underground? And those trees are so beautiful!"

Yun Qianyue interjected, "That's not a tree, but Spirit Fire called Purple Crystal Illusion Flame. The trees you see are just one of its 'forms'."

Lu Changsheng and the Exiled Sword Immortal were not surprised; they clearly recognized this kind of Spirit Fire.

The Twentieth-Grade Spirit Fire, "Purple Crystal Illusion Flame," often coexists with top-grade mineral veins and is on the same level as the "Star-Dream Separation Flame" that Xiao Fan devoured.

The Exiled Sword Immortal pondered, "No wonder this Mine Shaft is so hot. Could the commotion in the Primordial Ancient Mine also be caused by the Purple Crystal Illusion Flame?"