Lin Feng lured away a stone giant, constantly weaving through the hall, using his agile movements to evade its attacks. The stone giant wielded a massive stone axe, each strike carrying immense power, smashing the ground and sending shards of stone flying. Seizing an opening in the stone giant's attack, Lin Feng thrust out his Ice Spirit Spear, the tip striking the stone giant's arm joint precisely. The power of ice spirit seeped into the stone giant's body through the wound, causing its arm to momentarily stun.

Meanwhile, Xuanfeng faced another stone giant. He raised his staff high and chanted a complex incantation: "Wheel of Judgment of Light!" A huge golden wheel materialized above his head and then hurtled towards the stone giant. Sensing the threat above, the stone giant attempted to block with its stone axe. However, the power contained in the Wheel of Judgment of Light far exceeded its expectations. The golden wheel directly cleaved a deep gash in the stone axe, and with its remaining force, it slammed heavily into the stone giant's chest. The stone giant groaned and staggered back several steps.

Su Ran continuously cast ice spells around the third stone giant. "Ice Shard Piercing!" Sharp ice shards erupted from the ground, piercing towards the stone giant's legs and abdomen. Although the stone giant was enormous and its defenses were formidable, it was caught off guard by this sudden attack of ice shards. Several ice shards successfully pierced its legs, causing the stone giant to roar in pain and turn to charge at Su Ran. Su Ran remained calm, his figure flashing as he skillfully avoided the stone giant's charge, while simultaneously casting "Ice Shackles" again, briefly binding the stone giant's legs.

On the Blood Shadow Sect woman's side, she engaged the stone giant in close combat. The Blood Shadow Sect's movements were unpredictable and elusive; her figure was like a crimson phantom, constantly flashing around the stone giant. Each swing of her curved blade unleashed a blood-red blade light, leaving wounds on the stone giant's body. The stone giant tried to grab her, but always missed, becoming increasingly enraged by her toying.

On Lin Feng's side, the battle with the stone giant had entered a fierce stage. The stone giant seemed enraged by Lin Feng's agile attacks, its assault becoming increasingly ferocious. Ignoring the injury to its arm joint, it wildly swung its stone axe, unleashing a barrage of axe beams towards Lin Feng. Lin Feng dodged while simultaneously considering his countermeasures. Suddenly, an idea struck him. Seizing the moment the stone giant lost its balance after an attack, he charged at it, his Ice Spirit Spear piercing directly into the giant's ankle. The stone giant staggered and fell forward. Lin Feng used the momentum to leap high into the air, channeling his spiritual energy into the spear, and thrust it fiercely into the stone giant's nape. "Pfft!" The stone giant's nape was pierced; its body convulsed, then it crashed to the ground, turning into a pile of rubble.

On Xuanfeng's side, the stone giant's body was riddled with holes from the continuous attacks of the Wheel of Light's Judgment. Seizing the opportunity when the stone giant was slowed, Xuanfeng unleashed another powerful light spell. "Holy Flame of Light!" A ball of golden flame appeared out of thin air above the stone giant's head, instantly engulfing it. The stone giant struggled in the flames, letting out painful roars, and soon was completely incinerated by the Holy Flame of Light.

On Su Ran's side, the stone giant, its legs bound by ice shackles, struggled to move. Taking advantage of this, Su Ran unleashed his strongest ice-based attack spell – "Absolute Zero Ice Blast." An extremely cold aura rapidly spread from the stone giant, instantly encasing its body in a thick layer of ice. Then, the ice exploded with a deafening roar, the powerful impact shattering the stone giant's body into pieces.

Facing the stone giant, the Blood Shadow Sect woman was suffering increasing wounds and dwindling strength under her relentless Blood Spirit attacks. Seizing an opening, the Blood Shadow Sect woman plunged her Blood Spirit Curved Blade into the stone giant's throat, then yanked it out, sending a shower of stone fragments flying. The stone giant swayed a few times before finally collapsing to the ground.

After defeating the four stone giants, everyone was slightly out of breath, but their gazes involuntarily fell upon the crystal box on the stone platform in the center of the hall. Lin Feng stepped forward and gently picked up the crystal box. The box felt warm to the touch and emitted a soft glow. The moment he opened the crystal box, a dazzling light shot into the sky, but the light quickly dissipated. When everyone looked closely, the crystal box was empty.

"How could this be?" the Blood Shadow Sect woman said with some disappointment. Xuan Feng frowned, carefully examining the crystal box, trying to find some clues. Su Ran, on the other hand, searched around the hall to see if there were any other hidden mechanisms or clues.

Just as everyone was feeling somewhat discouraged, Lin Feng noticed some tiny runes engraved on the bottom of the crystal box. After Xuan Feng identified them, the runes formed a sentence: "To find the source of the spirit, first unravel the mystery; the words of the ancient stele guide the way." Everyone looked at each other, clearly not understanding the meaning of the sentence.

The crowd gathered around the crystal box inscribed with runes in Lin Feng's hand, lost in thought. "The words of the ancient stele guide the way forward, but where is there any ancient stele in these ruins?" The Blood Shadow Sect woman frowned, her eyes searching the hall for any clues about the ancient stele.

Su Ran also fell into thought, and she murmured, "Perhaps we missed some crucial information as we came along the passage." Xuan Feng stroked his beard and nodded slightly, "That's possible. This ruin is complex in structure and full of traps. The ancient stele may be hidden in some inconspicuous place." Lin Feng made a decisive decision, "Let's go back along the passage and examine it carefully, not missing any details."

The group walked back along the passage, taking each step with utmost care. The strange patterns on the walls once again caught their eye, and this time, they didn't just glance at them quickly, but examined them inch by inch. Su Ran stopped in front of a pattern depicting a group of people surrounding a tall stone tablet, which seemed to be covered with runes. The people were holding various objects, as if they were performing some kind of sacrificial ritual.

"Everyone, come and take a look! Could this pattern be related to the ancient stele?" Su Ran called out to the crowd. Everyone gathered around, carefully examining the pattern. Xuan Feng's eyes flickered: "Judging from this pattern, the ancient stele does indeed exist, and it seems to be related to an important sacrificial ceremony. But the pattern doesn't explicitly indicate the stele's location."

The woman from the Blood Shadow Sect continued along the passage. Suddenly, she noticed a stone slab a short distance ahead that was slightly different in color from the surrounding stones. She crouched down and examined it closely, discovering fine lines along the edge of the slab. She pressed down on the slab, and it slowly sank. Then, the wall on one side of the passage slowly opened, revealing a hidden passage.

The group exchanged glances, a hint of surprise flashing in their eyes, before cautiously entering the hidden passage. A faint smell of decay permeated the air. The mysterious patterns on the walls were gone, replaced by faded writing. Lin Feng leaned closer to the wall, struggling to decipher the inscription: "This path leads to a secluded place, the stele hidden within, yet shadows lurk, danger lurks everywhere..."

Before the words were even finished, a sinister laugh suddenly echoed through the narrow passage, sending chills down everyone's spines. Immediately afterward, a group of dark figures emerged from the depths of the passage. These figures were humanoid, but without facial features, and their bodies emanated a chilling aura. The figures moved with incredible speed, instantly reaching the group.

Lin Feng reacted swiftly, his Ice Spirit Spear thrusting out instantly, its tip coated with a thick layer of ice shards, piercing into the body of a dark figure. However, the spear seemed to have pierced through nothingness; the dark figure only paused slightly before continuing its attack. Seeing this, Xuan Feng hurriedly cast a Shield of Light, protecting everyone within it. The golden shield shone brightly, and when the dark figure touched it, it emitted a sizzling sound, as if being burned by some force.

Su Ran swiftly formed hand seals, unleashing a thick layer of icy mist that instantly filled the passage, slightly hindering the movements of the shadowy figures. Taking advantage of the mist, the Blood Shadow Sect woman moved with lightning speed, her Blood Spirit Scimitar dancing among the shadowy figures, each strike carrying a burst of Blood Spirit power. Struck by the Blood Spirit power, the shadowy figures let out sharp cries, their bodies becoming somewhat ethereal.

Lin Feng carefully observed the shadowy figures' movements within the icy mist, discovering that although they appeared formless, their bodies would briefly materialize before each attack. He immediately transmitted his voice to the others: "The shadowy figures materialize when they attack; let's seize the opportunity to attack their vital points!"

Upon hearing the telepathic message, Xuanfeng waved his staff, unleashing "Light Tracking Missiles!" Golden orbs of light shot from the tip of the staff, weaving through the icy mist and tracking the shadowy figures. Each time a shadowy figure attacked, the orbs struck it precisely, leaving hollow holes in its materialized body.

Su Ran then unleashed "Ice Spike Assault," suddenly erecting sharp ice spikes beneath the feet of the shadowy figures. Unable to dodge in time, many of the figures were pierced by the ice spikes. The Blood Shadow Sect woman fought with increasing ferocity, her Blood Spirit Curved Blade wielded with impenetrable speed, the power of the Blood Spirit flashing like crimson lightning, relentlessly slashing at the shadowy figures.

After a fierce battle, the number of shadowy figures gradually decreased. The last shadowy figure seemed to sense the danger and turned to flee. How could Lin Feng let it escape so easily? "Ice Spirit Prison!" Instantly, a huge ice prison rose around the shadowy figure, trapping it firmly.

Everyone breathed a sigh of relief and continued along the passage. After walking for a long time, a tall ancient stele appeared at the end of the passage. The stele was covered with densely packed runes, which shimmered with a faint light, as if telling ancient secrets.

Xuanfeng stepped forward and carefully studied the runes on the ancient stele. As he deciphered them, information gradually emerged from the runes: a fragment of the spiritual source, hidden in the Abyss of the Illusionary Sea.