High-level martial arts: Long spear with black flames to suppress demons.

In the Northern Sea, Shen Chang'an and Du Yue, accompanied by Cang Gu, have passed through twelve Zhenhai Cities in the past few days.

Some of these cities were built against mountains with walls deeply embedded in the rock strata, while others were situated on large islands in the open sea, surrounded by surging black waters. Within each city, an ancient array eye connected to the deep-sea seal is preserved.

Du Yue needed to use the Nine Heavens Phoenix Robe to leave a continuous responsive force at the center of the formation. Shen Chang'an, on the other hand, used the Great Sun Phoenix Wheel to send the aura of the two treasures along the formation path, little by little, into the deep sea.

This process did not go smoothly.

The array has been damaged for a long time, and the power will dissipate after being sent halfway. Although the array is still operating, it is affected by the turbulent currents on the seabed. The defenders need to stabilize the outer nodes first before the two can continue to try.

Fortunately, the Xuan Yuan Zhen Hai Seal below always responded.

Initially, a faint sensation was only detected from the seabed when they actively activated the Phoenix Heavenly Decree. A few days later, even when Du Yue withdrew her power, the phoenix pattern on her sleeve would occasionally light up on its own, echoing the underwater restrictions.

The waves along the coast calmed down considerably, and the defenders were finally able to free up manpower to repair the previously damaged formations.

But the giant waves surging from the depths never stopped.

Every so often, the chains beneath Zhenhai City would suddenly tighten, followed by a dull tremor. The patrol team tried to follow the vibrations downwards, but were still blocked by the dragon's restrictions, unable to pinpoint the source.

In the early morning, Du Yue suddenly opened her eyes from her meditation.

She raised her right hand, and a wisp of dark blue light appeared in her palm, slowly outlining the shape of the ancient seal.

Shen Chang'an noticed the change in the Mingfeng Wheel almost simultaneously and turned to look over.

Du Yue looked at the light and shadow in her palm, a hint of surprise in her voice.

"This time it seems different; I can sense what it wants us to do."

Jiang Yi's figure then appeared. After carefully examining the image, she said, "The connection has been stabilized. Go and inform Cang Gu that we can try again."

......

Dark clouds hung low over the Northern Sea.

Upon receiving the order, the twelve Zhenhai Cities activated their formations one after another, and spiritual energy bands crossed the sea, connecting the coastline with the islands in the outer sea. Warships from all sides had withdrawn from their designated waters, and the guardian cultivators had taken their positions, awaiting the changes on the seabed.

Cang Gu stood atop the main city wall, Peng Lie and Tu Shan Fei Yue guarded the two sides of the sea, while Yuan Chong Yue remained near the main formation position.

Du Yue hangs over the sea, maintaining her adult form. The sea breeze lifts her long, crimson hair, and the hem of her Nine Heavens Phoenix Robe slowly unfolds, with golden phoenix patterns flowing along her sleeves.

Shen Chang'an stood slightly behind her, with the Great Sun Phoenix Wheel hovering above his head, and all nine phoenix phantoms had opened their eyes.

Jiang Yi's voice reached their ears.

"The Zhenhai Seal cannot leave the seal immediately. First, receive the power it transmits and send it out along the array that has been connected over the past few days to stabilize its outer perimeter and allow it to reconnect with the restrictions below."

Du Yue nodded and spread her arms in front of her.

His long sleeves cascaded down, and fine golden light touched the seawater, quickly transforming into patterns that extended towards the surrounding array points. Shen Chang'an then activated his Dharma Wheel, infusing it with the power transformed from the Phoenix True Fire.

Beneath the dark sea surface, a faint blue light gradually emerged.

The restrictions that would normally only appear when subjected to impact now lit up one after another, extending deeper along the two people's senses.

Du Yue suddenly felt a weight in her palm.

It was as if someone had placed something extremely heavy into her hands across the thick sea. The phoenix pattern on the Chaohuang robe suddenly brightened, and she steadied herself, guiding this power towards the array path between the twelve cities, following Jiangyi's guidance.

All the key points of the formation responded simultaneously.

A deep dragon's roar came from the seabed, and the water surface in front of them slowly rose.

Shen Chang'an's expression hardened slightly, and he gently moved the Thousand Changes on his wrist, but Jiang Yi spoke first.

"Don't attack, the Sea-Suppressing Pillar is about to appear."

The surging seawater parted to the sides, and the top of a massive stone pillar slowly emerged from the water.

The pillar is tens of meters thick, its surface covered with a thick layer of sediment. Seawater cascades down the rock face like several waterfalls. An ancient dragon pattern gradually emerges, its head lowered and resting on the top of the pillar, its eyes originally dull and lifeless.

Golden and red patterns appeared on the pillar, and the dragon's eyes suddenly lit up.

Large sections of sediment crumbled away, revealing the deep blue-green stone beneath. At the same time, a massive beam of light extended downwards along the pillar, piercing into the deep sea beyond the reach of sight.

Following his senses, Shen Chang'an discovered that only the top of the Sea-Suppressing Pillar was visible above the sea. The underwater pillar was enveloped by layers of restrictions, as if it had traversed a much longer distance than what was visible on the surface.

Immediately afterwards, a large number of sea-suppressing pillars appeared in the distance.

Giant pillars stand in different sea areas, like solitary peaks rising from the water. The array deep within connects to them, and the chains beneath the twelve sea-suppressing cities light up one after another, their eerie blue light disappearing into the seabed along the chains.

Cang Gu took half a step forward.

His gaze lingered on the nearest stone pillar, remaining fixed on it for a long time.

He had seen the ancient characters next to the dragon pattern on the pillar in a fragmented rubbing preserved in the clan. Over the years, the garrison could only rely on the remaining chains and the outer formation to barely borrow a part of the power of the Sea-Suppressing Pillar, and could not make them respond completely.

Now, the incomplete patterns on the rubbing are finally clearly visible.

"To think we'd meet again..."

Cang Gu's voice was low, and his eyes gradually welled up with tears.

He didn't wipe it, but slowly bowed towards the stone pillar in the sea. The nearby Cangchi Clan cultivators also recognized the dragon patterns, their expressions excited, but they still guarded their respective positions, not daring to be distracted at this moment.

Outside the formation, the aquatic soldiers on the warships all looked up at the high place.

The dragon's roar echoed across the sea, and the patterns on the sea-suppressing pillar began to flow.

A deep blue light curtain unfolded layer by layer between the stone pillars. The waves that originally surged from the deep sea gradually lost their strength as they passed through the light curtain, eventually turning into several low, gentle waves.

The outline of the ancient seal in Du Yue's palm became increasingly clear.

Just then, a heavy impact was heard from underwater.

Near the gate of the abyss, darkness suddenly surged.

The enormous body swept between the two pillars of light, its head slamming heavily into the closing seal. Countless dragon patterns lit up upon impact, the light barrier caved inward, only to be held up by the subsequent surge of power from the surrounding area.

Black and purple lines spread along the old wound, and the giant eye stared intently upwards, no longer able to see the brief golden hue that had appeared earlier.

It suddenly swung its tail, pushing the heavy seawater into a horizontal turbulent current, which crashed into the nearby sea-suppressing pillar.

The stone pillar trembled violently.

The dragon patterns on the pillar immediately lit up, transmitting the impact along the barrier below to other nodes. The adjacent Sea-Suppressing Pillars responded simultaneously, and the power that was originally concentrated in one place was distributed by the seal that reconnected them.

The enormous creature turned around again and crashed into different locations in succession.

The seabed cracked, and rubble was swept into the turbulent currents. But whenever a barrier loosened, a dragon-patterned creature would swim in to fill the gap. The few gaps it could previously pass through gradually disappeared as the light barrier closed.

The dark purple veins are becoming increasingly bright.

A deep, hoarse sound emanated from the deep sea, causing the nearby waters to churn continuously, sounding both like a roar and carrying some indistinguishable pain.