Sound Wave Attack

On the city wall, Gu Changyuan rested his head on his right hand, his lazy gaze sweeping across the battlefield below.

It was like a shooting game—whenever an exotic beast charged at a cultivator's back, about to reap a life, his gaze would fall upon that beast.

In the next instant, an invisible stream of spiritual energy would instantly pierce through the beast's head, killing it on the spot.

That spiritual energy was formless and traceless, yet incredibly precise, with every strike landing on the beast's most fatal vital point.

No cultivator noticed this subtle assistance; they only felt that they were lucky to have dodged a lethal blow at the very last moment.

The eight city lords possessed extraordinary strength, all being existences at the sixth stage of the Half-Immortal realm or above.

There were only four Half-Immortal exotic beasts in the fourth wave of the beast horde, and their cultivation bases were only around the fifth stage of the Half-Immortal realm. They were no match for the city lords at all.

With the eight of them joining forces, the encirclement was effortless. In just the time it takes to drink a cup of tea, the four Half-Immortal exotic beasts were all slain.

After dealing with the Half-Immortal exotic beasts, they continued to charge toward those at the Tribulation Transcendence realm.

The eight figures were agile, constantly weaving through the depths of the beast horde as if entering an uninhabited land.

The weapons in their hands flashed with a cold light, and every swing precisely killed a Tribulation Transcendence realm beast.

Blood splattered, and the severed limbs of the exotic beasts constantly fell. Their combat power was terrifyingly formidable.

Soon, the third wave of exotic beasts was mostly cleared out.

The overall battle situation was surprisingly smooth.

The number of cultivator casualties on the Outland City's side was extremely low, and even the number of injured cultivators was far, far less than in previous battles.

Just as expressions of relief and relaxation appeared on everyone's faces, thinking that this beast horde could be easily resolved...

Suddenly.

An extremely sharp and ear-piercing roar echoed from the depths of the Outland.

The sound wave was overwhelming, carrying an extreme ferocity and malice. It instantly swept across the entire Outland City, causing even the earth to tremble slightly.

That sound was no ordinary roar; it contained a powerful soul attack and physical penetration, like countless sharp steel needles.

It densely pierced into everyone's eardrums and souls, resounding through every corner of the Outland City, making people's eardrums ache and their minds violently shake.

In that instant, the cultivators who were fighting the exotic beasts only felt their heads explode with a buzzing sound.

Their bodies suddenly stiffened, their eyes lost focus, and the weapons in their hands almost slipped away.

Some directly held their heads and screamed miserably, blood seeping from their seven orifices.

Those cultivators who were flying in the air plummeted down like kites with broken strings.

Those fighting on the ground felt their legs go soft and fell to their knees.

Even the cultivators operating the cannons on the city walls had their spellcasting directly interrupted; their faces turned deathly pale as they desperately circulated their cultivation methods to resist.

Even the eight Half-Immortal city lords, caught off guard by this sonic attack, lost their focus for a brief moment.

Flaws appeared in their surrounding spiritual energy, and several exotic beasts waiting for an opportunity immediately pounced, their sharp claws and fangs aiming straight for their vitals.

However, the surrounding exotic beasts were not affected by this sound wave at all. They maintained their berserk state, madly launching attacks at the cultivators without the slightest pause.

But the eight city lords, after all, had profound cultivation and experience. With firm minds and extremely fast reactions.

They recovered from their momentary lapse almost instantly, hurriedly circulating their cultivation methods to condense a spiritual energy barrier to protect their eardrums and souls.

At the same time, they backhandedly swung their weapons, killing the exotic beasts that took the opportunity to attack on the spot.

The eight did not dare to delay in the slightest. They immediately retreated together, quickly falling back near the city wall, vigilantly watching the distant movements with solemn expressions.

Before that sound arrived, Gu Changyuan had already sensed this abnormal power through the drastic fluctuations of spiritual energy in the distant heaven and earth.

He did not take action immediately.

He wanted to see exactly how powerful this attack was.

The result turned out to be a bit stronger than he had imagined.

The power of this sonic attack was probably a few fractions stronger than Fang Yuwei's full-force strike.

That sharp sound wave rushed straight toward Gu Changyuan with world-destroying momentum, but the moment it approached within three feet of him, it was firmly blocked by the invisible protective shield on his body, failing to stir even a single ripple.

A faint arc curled up at the corners of Gu Changyuan's mouth. He gently raised his right hand, and a crisp snap of his fingers echoed.

That sound wave was instantly rebounded by an even more powerful force.

Not only that, the rebounded sound wave had its power amplified several times over, transforming into an even stronger sonic wave that smashed fiercely toward the depths of the Outland like an invisible giant hammer.

At the same time, Gu Changyuan immediately stood up and swung his right hand violently.

The original barrier around him instantly expanded, first enveloping the entire Outland City.

Then it continued to extend outward, covering all the cultivators fighting bloody battles outside the city walls, forming an indestructible protective rampart.

Those exotic beasts that were trying to seize the opportunity to pounce on the distracted cultivators were instantly bounced away by a powerful force the moment they touched this barrier.

Like kites with broken strings, they violently flew back several feet, crashing heavily into the beast horde behind them and knocking a swath of exotic beasts off balance.

On the battlefield, those warriors who had just recovered from the sonic attack looked at the sharp claws already reaching out to them, originally thinking they were certainly dead.

Those warriors who barely regained their senses from the sonic attack looked at the exotic beasts right in front of them, their sharp claws about to reach them. They thought they were undoubtedly dead, not even having the time to resist, their hearts filled with despair.

But in the next second, they felt a gentle yet powerful barrier pass through their bodies, repelling all those ferocious exotic beasts and instantly taking them out of danger.

A surge of relief at surviving a disaster instantly welled up in everyone's hearts. They hurriedly steadied their bodies. Cultivators from the logistics team quickly stepped forward, carefully supporting the injured cultivators and swiftly sending them into the city for treatment.

The remaining cultivators who still had combat power immediately rallied their forces, gripped their weapons tightly, and readied themselves once more.

The eight Half-Immortal city lords returned to the city wall. Seeing Gu Changyuan make a move, they all breathed a sigh of relief.

That sonic attack just now was too terrifying. If the Holy Ancestor had not intervened, the warriors below would probably have been doomed.

However, their hearts could not be completely at ease just yet.

In the distance, the fourth wave of the beast horde had already arrived.

It was vast and mighty, blotting out the sky and covering the earth.

On the horizon, that black tide grew closer and clearer.

The earth trembled violently, and gravel from the city wall was shaken loose, falling with a rustling and clattering sound.

The sky was obscured by the shadows of the exotic beasts, and the already dim light now became as dark as twilight.

The gazes of the eight city lords fell upon that beast horde, their expressions growing increasingly solemn.

One, two, three...

Ten, twenty, thirty...

More than forty Half-Immortal exotic beasts!

Moreover, the one with the highest cultivation base actually possessed the strength of the ninth stage of the Half-Immortal realm!