He began his journey to becoming a true immortal by causing others to fail their tribulations.

Xun Yan familiarized himself with the concealment technique as he traveled, and soon followed the purple aura to the edge of a basin.

Upon seeing the object emanating purple energy, his brows furrowed slightly.

It was a slowly rotating purple spatial vortex, about three or four meters in diameter, quietly suspended in mid-air four or five meters above the ground.

"This thing looks like the entrance to the Thunderous Realm. Could it be... that another Thunderous Realm has opened? Or is it nested with other realms?"

Xun Yan couldn't understand it, but he didn't rush to check. Instead, he took out a recording stone and recorded it from a distance.

Just then, Xun Yan saw several people cautiously approaching the entrance to the unknown secret realm.

And judging from their attire, they were other outer disciples.

"Wow, guys, are you guys that strong? This thing looks really weird..."

Before Xun Yan could finish complaining, he saw the soil beneath those people suddenly explode, sending them flying.

After they crashed heavily to the ground, before they could even get up, they saw the culprit that had thrown them into the air.

It was a giant spider over ten meters long, entirely black, with eight eyes that gleamed with a scarlet light.

Even from a great distance, Xun Yan could feel the violent aura emanating from the spider.

This further confirms that the spider's cultivation level has definitely reached the peak of the twelfth level of Qi Refining!

Several outer disciples were so frightened that they turned pale; they simply didn't have the courage to attack the spider.

Instead, they all pulled out teleportation jade tokens, ready to crush them and escape immediately.

But the spider seemed to know their plan, and suddenly spat out spider silk from its mouth, accurately sticking it to their hands, preventing them from crushing the teleportation jade tablet.

Before the outer disciples could react, the spider continued to spit out silk, and in no time, it had turned the outer disciples into several silk cocoons.

Many spiders hunt by first controlling their prey and then injecting a toxin into their cocoon.

They melt the prey inside the cocoon into liquid and then enjoy it as comfortably as if it were a beverage.

A cold glint flashed in Xun Yan's eyes as he pondered inwardly:

"If this spider had killed those outer disciples from the start, I might not have avenged them."

But now they seem to be about to suffer. As fellow disciples, I should lend a hand!

Even if we can't save them, we can at least give them a quick death, so they don't suffer a fate worse than death.

But just as Xun Yan thought of this, he saw the spider stretch out its two front legs and move the silk cocoons one by one onto its back, not looking like it wanted to eat them.

After carrying all the silken cocoons on its back, the spider looked around for a while before turning around and running away.

"Is there a second level?"

Thinking of this, Xun Yan immediately used his earth concealment technique to follow.

After following for several hundred meters, Xun Yan saw the spider run into a cave.

The marks at the entrance clearly show that the cave was dug by a spider.

The spider came out of the cave shortly after it went in, looked around for a while, and then left.

They seemed to be preparing to return to the entrance of the secret realm to continue their ambush.

Xun Yan used his Earth Concealment Technique to enter the cave. He did not reveal himself immediately, but instead carefully peeked out half of his head from an inconspicuous corner.

He then saw that inside the cave, there were actually silk cocoons hanging there, conservatively estimated to be twenty or thirty.

This made Xun Yan mutter to himself:

"There were about two hundred outer sect disciples who entered the Thunderous Secret Realm this time. Excluding those who explored other places or already perished..."

Will the rest just hang here? I didn't expect that spider beast to look so ferocious and violent.

Not only did they know how to ambush, they also knew to store food in advance, just in case.

From this perspective, it seems to be a bit smarter than those werewolf beasts, though I wonder if it's due to the influence of the entrance to that secret realm.

Thinking about this, Xun Yan subconsciously opened the system map, wanting to see if he could mark the entrance to the secret realm on the system map.

The system map does have a manual marking function, but what surprised him even more was that another dot appeared on the system map.

Judging from its location, it is near the entrance to that secret realm.

With a thought, Xun Yan clicked on the light spot, and relevant information appeared:

[Target: Ferocious Beast - Earth-Slaying Spider]

[Introduction: Even ferocious beasts need to undergo tribulations to break through their limits. They don't know how to use magical artifacts or other external aids; they can only rely on their own physical strength to withstand the tribulations.]

After each tribulation, the ferocious beast enters a period of weakness and needs to eat a lot to recover quickly.

[It is predicted that this Earth-Slaying Spider will soon undergo its tribulation; the host should pay close attention.]

Upon seeing this information, Xun Yan's eyes lit up.

"I never thought that besides human cultivators, even ferocious beasts could become the system's target. Does that mean that demonic beasts and other races are no exception?"

Your system is truly outrageous, it doesn't spare any race, but that's a good thing for me, it greatly increases the number of sheep I can fleece!

With a new target in mind, and knowing that the person inside the cocoon was not yet in mortal danger, Xun Yan did not rush to rescue them, but quietly withdrew from the cave.

Upon arriving at the basin where the entrance to the secret realm was located, Xun Yan quickly pinpointed the location of the Earth-Attack Spider using the glowing dots on the system map.

"This spider's combat power far surpasses that of the werewolf beast. If I were to face it head-on, I would definitely be no match for it. But why should I confront it head-on?"

Since it prefers to stay put, I might as well test the power of the Nine Heavens Thunder Formation.

With this in mind, Xun Yan started working on a "geometry problem" on the system map. After a short while, he identified several key nodes for constructing the formation.

Using the Earth Concealment Technique to reach the locations of each node, Xun Yan reluctantly took out mid-grade spirit stones and a magic weapon longsword to begin setting up.

These magical artifacts and longswords were all taken by Han Xi from his fellow disciples; Xun Yan simply collected them all, adhering to the principle of not wasting anything.

I was thinking of going back and using the Treasure Basin to make a copy, to see if I could get any useful boosts or affixes.

But compared to the unknown, it's more valuable to let them make the most of their remaining energy.

After working for most of the day, Xun Yan finally finished setting up the Nine Heavens Thunder Array as the sky began to lighten.

He wiped the sweat from his forehead and thought to himself:

"Although the formation is powerful, the preparation time is too long, and its mobility is insufficient. If it weren't for the fact that this spider also likes to stay in one place,..."

This Nine Heavens Thunder Formation might not actually be of any use. I wonder if there's anything that can shorten the setup time without affecting the formation's power.

"Forget it, we can deal with this after we get out. Let's rescue them first, so they don't get accidentally killed when the formation activates."

Thinking of this, Xun Yan once again used his earth concealment technique to enter the cave.

But when he swung his Thunderclap Sword to cleave open a silk cocoon and rescued an outer disciple inside, he noticed that the dot representing the Earth-Slaying Spider on the system map had moved.

And it charged straight toward the cave!