Liou Yuan’s body immediately stiffened.

The appearance of those characters indicated that the Fixed Star Compass inside him had activated on its own, a phenomenon that had only occurred twice before.

This was the third time, which made Liou Yuan regard it seriously, his gaze fixed on the Compass.

He saw a miniature map forming above the Compass pointer, illuminated by sparkling light.

The map clearly marked the location of what the Fixed Star Compass called the Purifying Dark Demon, that very Star Erosion.

Additionally, below that Purifying Dark Demon, a bluish glow was flickering.

It was undoubtedly the spiritual object known as the Profound Yin Cold Marrow Stone, detected by the Fixed Star Compass.

"Profound Yin Cold Marrow Stone?" Liou Yuan repeated the name, scouring his memory for information about this spiritual object to no avail.

However, he knew of the Vascular Formation and Meridian Opening Elixir.

An ancient elixir that had long disappeared within the Cyan Feather Realm.

Ancient texts described the Vascular Formation and Meridian Opening Elixir as follows.

It is a medicine that gathers the essence of stars as the lead ingredient. With Bone Marrow Cleansing Dragon Saliva Mushroom as the principal herb, supported by Soul-Focusing Grass and Snow Soul Ginseng, along with over thirty auxiliary spiritual medicines including Forget-me-not.

This elixir, when consumed, can enhance the consumer’s aptitude, specifically the Star Acupoint aptitude, and strengthen their meridians, reforming their fundamental bones, truly a rare and precious medicine.

It is one of the few ancient elixirs that can enhance a cultivator’s aptitude.

What does this mean?

It means that if Liou Yuan can slay this Purifying Dark Demon, he would obtain an elixir that has been lost in the Cyan Feather Realm.

This was the second method known to Liou Yuan, after the Stellar Baptism, to enhance his own aptitude.

If this elixir could be sold, its value would be immeasurable.

Just the enhancement of the Star Acupoint aptitude and the reforming of fundamental bones would drive countless people in Cyan Feather State mad.

Even the Golden Core True Masters would covet it.

Though Liou Yuan was generally composed, he couldn’t help but feel a sense of immobility at this moment.

"Damn it." Yet thinking about the Purifying Dark Demon’s strength gave Liou Yuan another headache.

It was classified by the Fixed Star Compass as a quasi-level one danger Star Erosion.

It proved that Liou Yuan’s previous assumptions were correct; this Purifying Dark Demon’s strength was indeed at the Half-Step Foundation Establishment level.

In the outside world, Liou Yuan could leverage others’ help to find a way to kill it.

But here in the Erosion Land, a place where only the Five Extremes Mountain Outer Sect disciples could enter, what means could Liou Yuan use to slay it?

Liou Yuan’s mind instinctively thought of the four powerful individuals in this Outer Sect training session with a chance to reach the top three.

He quickly shook his head again.

"No, even if they are powerful, they are merely at the Qi Cultivation Eighth Layer and would struggle against a Qi Cultivation Ninth Layer Star Erosion."

"Against this Half-Step Foundation Establishment Star Erosion, there’s simply no chance of victory, not even if all four attacked together."

Liou Yuan scanned the entire Erosion Land without finding anyone who could stand against this Purifying Dark Demon.

But to give up like this, he really didn’t want to in his heart. 𝒻𝓇𝑒𝘦𝘸𝑒𝒷𝓃ℴ𝑣𝘦𝑙.𝒸ℴ𝘮

He stopped at a safe distance of three hundred zhang from that Half-Step Star Erosion, relying on the Night Concealing Mask’s invisibility to take another look at that Half-Step Foundation Establishment Star Erosion.

It seemed to be in some sort of slumber state, and once Liou Yuan got close enough, he doubted the Night Concealing Mask could fully ensure his safety.

"What should I do?"

Liou Yuan murmured.

Getting just the Vascular Formation and Meridian Opening Elixir is already something, but the Fixed Star Compass showed that there was a spiritual object called the Profound Yin Cold Marrow Stone underneath the Purifying Dark Demon.

Just hearing the name, one could tell it’s extraordinary.

The reason that Half-Step Foundation Establishment Star Erosion was slumbering there might largely be due to the Profound Yin Cold Marrow Stone.

If it could be so cherished by a Half-Step Foundation Establishment Purifying Dark Demon, how could it be an ordinary spiritual object?

"Withdraw for now, and plan carefully."

Because Liou Yuan didn’t know the full range of that Purifying Dark Demon’s perception.

If he stayed at this location for too long, even with the aid of the Night Concealing Mask, it wouldn’t necessarily be absolutely safe.

So, after a brief internal struggle, he opted to retreat temporarily.

Silently lurking in the shadows, Liou Yuan retreated along the path he came, almost ten miles back.

Only then did he remove the invisibility effect of the Night Concealing Mask and stepped out of the shadows.

Throughout this process, he kept looking back, occasionally glancing toward the Purifying Dark Demon’s location.

Liou Yuan had previously obtained several commendable rewards through the Fixed Star Compass.

Logically, he shouldn’t be so reluctant.

But this time was different from the previous occasions.

Those previous Fixed Star Compass targets were outside, so Liou Yuan could afford to wait patiently.

But this time, it was within the Erosion Land, and once the three-month limit was up, he would have to leave.

Effectively losing this opportunity completely.

Once missed, it would be missed forever.

"Too difficult." Liou Yuan rubbed his brow.

He had just considered all his available cards and still hadn’t found a way to kill this Purifying Dark Demon.

Even relying on others’ strength was impossible.

If no surprises occurred, Liou Yuan felt he might miss out on this opportunity.

"No, wait!" Suddenly, Liou Yuan’s eyes turned sharp.

He recalled a feasible method.

Facing it head-on, Liou Yuan couldn’t possibly deal with that Half-Step Foundation Establishment Star Erosion.

But what if it was with an array?

The "Five Elements Birth and Destruction Array Derivation" was left by the renowned array master Han Zhenzi seven hundred years ago.

It contains nearly twenty Foundation Establishment arrays.

And over a hundred Qi Cultivation Realm arrays.

With Liou Yuan’s current cultivation and array mastery, he couldn’t set up a Foundation Establishment Array yet.