The most troublesome one was that alien powerhouse.

The alien had concealed its true cultivation level. It took Ye Liuyun quite some time to locate its traces using his Golden Pupils. At the moment, the creature was disguised as a laborer, handling the corpses of demonic undead in the backyard.

After Ye Liuyun and his doppelganger infiltrated the base under the cover of invisibility, they discarded their cloaks. Dressed as ordinary soldiers and exuding formidable auras, they moved unchallenged.

As they strode into the backyard, the alien powerhouse cast them a fleeting glance, initially dismissing them. But sensing their elevated cultivation levels, it began scrutinizing them with keen interest.

Muttering something under its breath, the alien received no response from Ye Liuyun or his doppelganger. Instead, the two immediately unleashed their divine souls, storming into the creature’s consciousness.

Inside its mind, the same malevolent black mist of the alien race swirled thickly. Once again, Ye Liuyun employed the purifying power of Buddhist radiance to dispel the darkness.

The alien’s divine soul attempted to flee, but in an instant, Ye Liuyun branded it with a slave seal. A furious roar of defiance echoed through the depths of its consciousness.

"Silence!"

Ye Liuyun swiftly exerted control, forcing the alien’s soul into submission.

Through soul-searching, he uncovered a wealth of information. Since this alien did not participate in combat, it possessed extensive knowledge.

It revealed that the alien race had established over a hundred bases across worlds beyond their stronghold, each housing massive breeding facilities for their young.

Their stronghold, now dominated by the gold-armored and silver-armored elites, had expelled most other alien species, retaining only a few as servants. The aliens referred to this stronghold as the Endless World.

According to the creature’s memories, the Endless World was at least ten times larger than the Wraith Demon World.

This revelation stunned even Ye Liuyun. The Wraith Demon World was already comparable to the Sacred Land, and a realm ten times its size was beyond imagination.

The aliens had divided the entire starry sky into four war zones—east, south, west, and north—centered around their Endless World. Ye Liuyun’s current location fell within the Northern Zone.

The devil creature was only familiar with over a hundred headquarters located within the Northern Zone, having no knowledge of other regions.

Yet, through its memories, Ye Liuyun discovered that resistance forces against the alien invaders in the Northern Zone weren’t limited to humans alone. Beastkin, demonic clans, and other races—all victims of the aliens’ aggression—had also risen in defiance.

Of course, humans still possessed the most advanced techniques in alchemy and artifact forging. However, they also had the highest number of traitors, making their resistance the most fragmented. In fact, the aliens’ knowledge of artifact crafting had been stolen from human martial cultivators.

These revelations shocked Ye Liuyun. He hadn’t expected the aliens to wield such overwhelming influence.

But this dominance hadn’t been built overnight. The aliens’ plundering had begun long ago. Initially, they bided their time, amassing strength before swiftly conquering numerous worlds to establish their headquarters and strongholds.

Their reproductive capabilities were terrifying. If they paused their invasions even briefly, their population would explode.

A few years without war could spawn millions of additional soldiers. And with such numbers came an insatiable demand for energy and resources, leaving them no choice but to expand relentlessly.

"Let’s take out the garrison commander here," Ye Liuyun decided. Seeing further use for the captive alien, he assigned it a task before his doppelganger unleashed the corpse demons to slaughter the enemy forces.

As chaos erupted, the garrison commander rushed out to rally his troops against the undead onslaught—only to be swiftly cut down by the alien elite under Ye Liuyun’s control.

Without unified leadership, the alien soldiers, despite their desperate resistance, stood no chance against the horde of corpse demons.

Ye Liuyun then released the Demon Vine and the Demon-Sealing Stele, allowing them to feast on the battlefield’s energy.

By the end, the entire base had been wiped out, leaving only tens of thousands of corpse demons behind.

His doppelganger recollected the enslaved alien elite and the remaining undead. Once the stele and vine had drained the corpses dry, he set the entire place ablaze, reducing it to ashes.

With no time to waste, they immediately headed for the altar. Before alien reinforcements could arrive, they had to seize it first.

Meanwhile, Ye Liuyun ordered the alien army under his control to pilot the starry sky battleships back to the altar at full speed. 𝙧𝙚𝙚𝔀𝒆𝓫𝓷𝙤𝓿𝒆𝙡.𝒄𝙤𝓶

The defenses at the altar were sparse—most of the garrison had been dispatched to capture the corpse demons. The aliens never imagined anyone would infiltrate their headquarters through the altar. Such a thing had never happened before. With just the tens of thousands of corpse demons under his command, Ye Liuyun was more than enough to crush them.

As for the alien powerhouse stationed there, Ye Liuyun had the controlled elites divert its attention while he and his doppelgänger seized the opportunity to brand it with a slave seal.

Once the area was secured, Ye Liuyun swept up the stockpiled resources into his spatial world. By the time his controlled alien army arrived, he had the altar specialists among them temporarily seal the portal, cutting off reinforcements.

He then ordered the alien commanders to recall their scattered forces one by one. As each unit returned, Ye Liuyun systematically took control of their leaders and elites, then turned the captured corpse demons against them, annihilating the alien armies piece by piece.

The Demon-Sealing Stele and the Demon Vine absorbed vast amounts of energy from the slaughter, growing so powerful that even the two strongest alien elites were no match for them.

Ye Liuyun harvested a massive haul of alien core pellets, which he distributed among the demonic half-beasts to bolster their strength.

Meanwhile, Yu Xiaofeng located and destroyed the teleportation altar left behind by Wan Teng, while Liu Quan eradicated the last of the tainted sea beasts.

Of the two thousand soldiers sent by Ye Liuyun on the death march, nearly all survived—far exceeding expectations. Using the Black Tower of Teleportation, he returned to the Holy Land and mobilized these elite warriors, along with his million-strong army and the Holy Land’s two million troops, to the Witch Demon Realm.

The final sweep wiped out all remaining alien forces, save for the two third-level Heavenly Realm elites and fifty second-level Heavenly Realm aliens—kept alive to operate the altar and intercept enemy communications.

The corpse demon army was turned against itself until none remained, their core pellets distributed among the soldiers and converted into true essence via exchange stones to enhance their cultivation.

The Holy Land’s two million troops were deployed across the land to hunt down stray corpse demons and purge the tainted human cultivators, cleansing the realm thoroughly. Ye Liuyun supplied them with exchange stones, allowing them to harvest resources from their kills.

Even the Metal-Devouring Beast was unleashed to scout for ore veins—on the condition it kept half the spoils, a deal Ye Liuyun gladly honored. His share was mined and handed to Qiong Qi to forge weapons or stockpile for future use.