The mountain-shaped magical artifact was indeed Thunderfire Peak, conjured by Lu Changfeng, ready to clash head-on with the Black Water Profound Snake.
First, the Hongyin Flying Sword struck the serpent’s tail, sparking a glimmer, but didn’t make the serpent bleed.
Next, Thunderfire Peak collided heavily with the serpent’s tail, producing a tremendous roar.
A massive wave surged forward the next moment, hitting Lu Yuanshan and Lu Changfeng with a chill, as they swiftly channeled magical power to deflect the oncoming torrent.
It wasn’t about dignity; no one wanted to face the enemy while soaking wet.
They blocked the deluge, glancing back at the Black Water Profound Snake, where Thunderfire Peak, enveloped with the power of thunder and fire, still faced off against the snake, creating a sizzling sound of steaming vapor.
The strike from Thunderfire Peak soon only caused the serpent to flinch in pain, retracting its tail before plunging back into the lake with a splash, sending waves rippling out.
The Black Water Profound Snake, covered in black scales, had a formidable defense; ordinary Tier One magical artifacts couldn’t harm its body.
Though the Thunderfire Peak was a powerful slaying weapon of considerable size, the Black Water Profound Snake was also massive, with a tail as large as Thunderfire Peak itself.
A sweep from the serpent’s tail could rival the mighty power of Thunderfire Peak.
Unable to wound the Black Water Profound Snake but merely push it back a little, Lu Changfeng recalled Thunderfire Peak, growing more cautious.
This opponent was indeed quite tricky, but that wasn’t enough to make one back down.
Whoosh, whoosh, whoosh!
Just then, the Cyan Light Bamboo Sea Sword Array was completed, with nine Cyan Bamboo Swords scattered, twinkling in the void like stars, surrounding the Black Water Profound Snake.
Nine rays of cyan light descended, forming an array inscription, enshrouding the Black Water Profound Snake, reducing its speed by over thirty percent.
"Let’s finish this quickly."
Lu Ping’s voice rang out.
Simultaneously, Lu Changfeng moved again, retrieving the Blazing Sword Box from the Storage Bag, aiming at the serpent’s enormous head, unleashing six streams of Blazing Sword Qi.
The six streams of Sword Qi rose in the air, bringing a hint of warmth to the chilling air.
Though the Black Water Profound Snake dodged in time, two streams of Blazing Sword Qi accurately hit one of its snake eyes.
The Sword Qi exploded, fierce flames enveloping the area like two miniature suns, covering half of the serpent’s head before slowly dissipating.
Having succeeded in this strike, Lu Changfeng was secretly delighted.
Yet, next moment, he saw clearly a black glimmer over the Black Water Profound Snake’s deep green eye, rendering the defensive membrane on its eye distinctly visible.
Evidently, the two streams of Blazing Sword Qi hit the snake eye, but the membrane over the eye deflected them, failing to injure it.
Lu Changfeng’s plan fell through.
Seeing this, Lu Changfeng simply tapped his Storage Bag, summoning the Golden Qian Mother and Child Blade, aiming once more at the opponent’s eye to attack again.
However, having endured one attack, the Black Water Profound Snake would not foolishly wait to be struck again.
It roared furiously, spewing a pungent stench from its mouth, abruptly bending down to viciously bite at Lu Changfeng.
With its enormous mouth, it was big enough to swallow an ox whole.
This frenzied movement made the Cyan Light Bamboo Sea Sword Array tremble slightly, causing Song Minghui and the nine disciples to struggle in controlling the array.
Lu Changfeng was alarmed, quickly stepping to the right to evade.
At the same time, Lu Zhiwei also made her move.
The Vermilion Bird Ring from her wrist flew out, expanding instantly like a crimson moon ring, aiming to loop around the Black Water Profound Snake’s mouth.
All this occurred in a flash.
Next moment, the Black Water Profound Snake clamped its huge mouth on the Vermilion Bird Ring, producing a crisp ding sound.
Despite its massive size, it was no less agile, even under the suppression of the Cyan Light Bamboo Sea Sword Array.
Given the strength of Song Minghui and others, even with the combined efforts of the nine, they couldn’t confront the Black Water Profound Snake head-on, having to retreat and employ the array to assist Lu Yuanshan and the others.
Even with Cyan Bamboo Swords slashing at the Black Water Profound Snake, its black scale defense remained unbreakable.
When the Vermilion Bird Ring looped around, the serpent dexterously swayed its upper body, dodging the attack, attempting to destroy the Vermilion Bird Ring.
Being bitten violently, the Vermilion Bird Ring trembled sharply, reluctantly retreating to Lu Zhiwei’s hand.
"Don’t underestimate it, use the ultimate weapon directly."
Lu Ping’s voice echoed in Lu Zhiwei’s mind.
"Changfeng, deploy the Shenxiao Decree!"
Then he commanded Lu Changfeng.
How destructive the Shenxiao Decree would be against the Black Water Profound Snake, Lu Ping didn’t know; they would find out.
Upon hearing Lu Ping’s communication, Lu Changfeng dared not slack off.
With a serious look, he brought out a Shenxiao Decree, continuously infusing it with magical power, draining a fifth of his strength within just three breaths.
The Shenxiao Decree required five breaths to activate, leaving three breaths where the Black Water Profound Snake was not idle, but swung its tail once more, stirring a large swell towards Lu Changfeng.
At this moment, Lu Changfeng was activating the Shenxiao Decree, sensing danger yet still pouring magical power into it without space to defend himself.
Luckily, he wasn’t alone.
Seeing his younger brother in peril, Lu Yuanshan stood first, using the Water Element Shield, fiercely channeling his magical power into it while standing before Lu Changfeng.
The giant tail swept in, carrying intense wind pressure, first meeting the Water Element Shield.
The Water Element Shield flashed brilliantly, drawing a tenth of Lu Yuanshan’s magical power, transforming into a thick defensive Water Shield.
With a dull thud, the tail struck hard on the Water Element Shield, instantly absorbing immense force.
The Black Water Profound Snake felt as if it had hit water with its tail, only slightly shaking the Water Element Shield without breaking through its defense.
Having blocked this strike, Lu Yuanshan felt no discomfort, internally praising the artifact bestowed by his father for its excellent defense.
This thought vanished quickly, allowing no distraction, just as he meant to turn back toward Lu Changfeng, Lu Changfeng’s voice rose.
Light surged abundantly, forming a funnel-shaped thundercloud within the cavern, stirring waves of momentum that shook all around.
A bolt of Nine Heavens Divine Thunder suddenly descended from the thundercloud, like a silver dragon, fiercely striking the Black Water Profound Snake’s body.
Lightning surged through the cavern, blindingly bright.
The air was filled with thunderous roars and a tremendous hiss, unsettling all who heard it.
Brimming with hope, Lu Changfeng had some confidence in this strike from the Nine Heavens Divine Thunder.