Under the deep cover of night, the assault team stealthily made their way towards the mysterious force's camp like phantoms. The surroundings were eerily quiet, broken only by the occasional chirping of insects. The team members' heartbeats seemed amplified in the tense atmosphere; each was completely focused, gripping their weapon tightly, their eyes revealing unwavering determination.

As they approached the camp, the first thing that caught their eye was the eerie "Dark Thorn Forest." Thorns, like black blades, sprang abruptly from the ground, densely packed and intertwined to form a terrifying thicket. An eerie, ghostly light shimmered on the thorns, clearly indicating their deadly poison.

"Prepare to move out!" the first squad leader, a senior swordsman from the Spirit Sword Sect, ordered in a low voice. The team members drew their "Ice-Breaking Poison-Melting Blades" and infused them with spiritual energy. The blades instantly emitted a blazing light, and the intense heat swept towards the thorns like a surging wave.

"Hiss..." Under the onslaught of the high temperature, the black thorns began to hiss in pain and gradually melted. However, the thorns seemed to possess some kind of self-repairing ability, and the melted parts quickly grew back.

"Everyone, increase your spiritual energy output! We can't give them a chance to breathe!" the captain shouted. The sword cultivators gritted their teeth and channeled their spiritual energy with all their might. In an instant, the light shone brightly, and a fierce battle unfolded between the scorching heat and the thorns' tenacious resistance.

Meanwhile, the mysterious guards hidden in the thorn bushes discovered the assault team's movements. "Enemy attack! Attack immediately!" With a command, the guards surged from all directions, unleashing various dark spells. Black orbs of spiritual energy rained down on the first squad, colliding with the blazing light and erupting into a series of booming sounds.

"Sword formation, defense!" The sword cultivators of the Spirit Sword Sect quickly formed a sword formation, their multicolored light weaving into a solid barrier to block the incoming spells. However, the guards' attacks were relentless, leaving the sword cultivators somewhat overwhelmed.

"No, this won't do. Breaking the formation will be too slow. We must find a way to break through their interference!" a sword cultivator said anxiously.

Just then, the second and third squads arrived. The captain of the second squad, an elder of the Qingyun Sect, said, "We'll draw their fire; you focus on breaking the formation!"

Having said that, the disciples of the Qingyun Sect unleashed the "Qingyun Illusionary Thunder Technique." Instantly, dark clouds filled the sky, and streaks of azure lightning, like dragons, darted through them, striking towards the mysterious force's guards. The guards were forced to divert some of their attention to defend against the lightning attacks.

Taking advantage of the situation, the first squad increased the spiritual energy they poured into the "Ice-Breaking Poison-Melting Blade." "Boom!" Under the intense heat, a gap finally appeared in the "Dark Thorn Array."

"Charge!" At the command of the first squad leader, the team members quickly passed through the gap and advanced towards the "Netherworld Illusion Array".

However, the moment they stepped into the "Netherworld Illusion Array," the surrounding scenery changed drastically. A sinister mist spread out, and various terrifying phantoms appeared and disappeared within it. There were hideous demons and monstrous beasts with bared fangs and claws, emitting chilling roars as they pounced on the team members.

"Don't panic, use the 'Heart-Cleansing and Soul-Suppressing Bell'!" shouted the second squad leader. The team members hurriedly took out the bells and shook them. The clear, ringing sound transformed into special sound waves that spread through the mist. The phantoms gradually blurred under the impact of the sound waves.

But just when the team members thought they could break the formation easily, a master from the mysterious force appeared. An old man in black robes, holding a black staff, slowly emerged from the mist. "Hmph, you think you can break the formation so easily?" The old man in black robes sneered, and with a wave of his staff, a torrent of black spiritual energy rushed towards the team members.

"Defense!" shouted the Qingyun Sect elder. The team members quickly cast defensive spells, and a cyan light barrier appeared in front of them. The torrent of black spiritual energy crashed into the light barrier, scattering countless sparks. The light barrier trembled violently, on the verge of shattering at any moment.

"Hold on, everyone! Let's attack together!" the elder shouted. The Qingyun Sect disciples maintained the defensive light barrier while unleashing various offensive spells. Azure spiritual energy beams and fire missiles shot towards the black-robed elder.

The black-robed elder remained calm. He waved his staff again, and a black spiritual energy shield appeared in front of him, easily blocking the attack. "Is that all you've got?" the black-robed elder sneered.

Just as the two sides were locked in a stalemate, the third team arrived. A disciple of Zixiao Palace quickly took out the "Demon-Slaying Vajra Pestle" and infused it with spiritual power. The Vajra Pestle shone brightly, radiating powerful Vajra energy.

"Watch this!" shouted a disciple of Zixiao Palace, throwing the vajra pestle at the black-robed elder. The vajra pestle, accompanied by a whistling sound, hurtled towards the black-robed elder like a shooting star.

The old man in black robes sensed the immense power of the vajra and his expression changed slightly. He hurriedly raised the power of his black spiritual energy shield to its limit, attempting to withstand the vajra's attack.

"Boom!" The vajra struck the black spiritual energy shield, unleashing a deafening roar. Cracks appeared on the black spiritual energy shield, which eventually succumbed to the force and shattered. The vajra, its momentum undiminished, continued its charge towards the black-robed elder.

The black-robed elder couldn't dodge in time and was struck by the vajra, spitting blood as he flew backward. "Quick, run! Don't give him a chance to recover!" shouted the third squad leader. The team members rushed towards the "Blood Demon Guardian Array," while at this moment, the phantoms in the "Netherworld Illusion Array," having lost the black-robed elder's control, gradually dissipated.

As they approached the "Blood Demon Guardian Array," a powerful and malevolent aura swept over them. In the center of the array, a colossal phantom of a blood demon slowly emerged, its eyes bloodshot and radiating a bloodthirsty light. It let out a deafening roar, seemingly warning everyone not to approach.

"Activate the 'Blood Demon Guardian Array'!" the guards of the mysterious force shouted. Instantly, the runes in the array lit up, and blood-red chains of spiritual energy rose from the ground, wrapping around the assault troops.

"Use the 'Vajra Pestle' to break these chains!" shouted the captain of the third squad. The team members unleashed the full power of the "Vajra Pestle," the Vajra power clashing against the blood-red spiritual energy chains, producing a piercing friction sound.

Will the assault force be able to successfully break through the "Blood Demon Guardian Array" and penetrate deep into the mysterious force's camp? What new countermeasures will the mysterious force employ? The battle to break the array has entered its most critical stage. At this moment, the fate of the cultivation world seems to be tightly held in the hands of both sides. The atmosphere of the great battle is becoming increasingly intense, and everyone is being drawn into this thrilling vortex.

In the fierce clash, although the Vajra power of the "Demon-Slaying Vajra Pestle" was formidable, the continuous surge of blood-red spiritual energy chains put immense pressure on the assault troops. "Everyone hold your ground, concentrate your forces and attack one point!" shouted the captain of the third squad, knowing full well that it would be difficult to break through the dense spiritual energy chains by dispersing his forces.

Upon hearing this, the team members concentrated the power of the "Vajra Pestle" in one place. A dazzling golden light flashed, and they finally succeeded in severing a chain of spiritual energy. However, this was only the beginning; more chains of spiritual energy surged forth like a tide.

At this moment, the first and second squads also arrived to provide support. The sword cultivators of the Spirit Sword Sect unleashed fierce sword energy in an attempt to sever the chains of spiritual energy; while the disciples of the Azure Cloud Sect cast powerful spells to attack the Blood Demon phantom, hoping to weaken its power.

The Blood Demon seemed to sense a threat. It let out an angry roar, and its massive body shuddered violently. Instantly, the surrounding space seemed to distort, and a powerful suction force emanated from the Blood Demon, attempting to pull the assault team members towards it.

"Not good, everyone steady yourselves!" Lin Yang shouted. He quickly drew his "Starry Golden Sword" and cast the "Starlight Protection Technique," a layer of golden light enveloping him to resist the powerful suction. The other team members also cast their own defensive spells to resist the suction.

Amidst this chaos, the experts from the mysterious force reappeared. Besides the previously injured black-robed elder, several mysterious figures clad in blood-red robes joined them. They stood behind the phantom of the Blood Demon, their hands forming complex hand seals, continuously channeling power into the "Blood Demon Guardian Array."

"We can't let them continue to strengthen the formation!" Su Ran shouted. He led several sword cultivators from the Spirit Sword Sect, rushing towards the mysterious force's expert like lightning. "Thousandfold Sword Shadow!" Su Ran unleashed a powerful sword technique, countless sword energies shooting towards the mysterious force's expert like sharp blades.

Seeing this, the experts from the mysterious forces all cast defensive spells. The old man in black robes waved his staff, and a black spiritual energy barrier appeared in front of him; a mysterious man in blood-red robes summoned a blood-red shield to block the sword energy attack.

However, the attacks from the Spirit Sword Sect's sword cultivators were relentless and fierce. Other sword cultivators also unleashed their unique skills, pushing the power of their sword formations to their limits. Under the sword cultivators' relentless assault, the defenses of the mysterious force's experts gradually began to falter.

Meanwhile, the disciples of the Azure Cloud Sect were not idle either. They unleashed the "Azure Cloud Vastness Spell," sending a massive azure beam of light hurtling towards the Blood Demon phantom. Under the attack of the azure beam, the Blood Demon phantom let out a painful roar, its form beginning to fade into ethereal form.

Seeing the Blood Demon phantom under attack, the experts from the mysterious force became somewhat distracted. Su Ran seized this opportunity and unleashed the strongest move of "Sword Control of Heaven and Earth," "Heaven and Earth Sword Break." A sword aura containing world-destroying power slashed towards the black-robed elder.

The old man in black robes couldn't dodge in time and was struck by the sword energy. "Ah!" he screamed, his body flying backward and crashing heavily to the ground, his fate unknown. The other experts from the mysterious forces were shocked. They realized that if they remained, their lives would be in danger. So they all turned and fled.

With the escape of the mysterious force's expert, the power of the "Blood Demon Guardian Array" greatly weakened. The assault team seized the opportunity to launch a full-scale attack and finally succeeded in breaking through the "Blood Demon Guardian Array".

"Charge in!" Lin Yang shouted. The assault force surged into the mysterious force's camp like a tidal wave. Inside the camp, the members of the mysterious force, seeing their defensive formation breached, immediately descended into chaos.