Feng Wu and the Five-Colored Phoenix temporarily withstood the black pillar of flames by burning their own primal power. The scorching heat and terrifying force caused her delicate body to tremble, and blood trickled from the corner of her mouth, but her eyes remained firm as she stubbornly held on.

Lin Feng seized the opportunity, shouting, "Find its weakness and attack with all your might!" as he gathered all his ice-elemental spiritual power, forming a huge ice halberd in his palm. He stepped on the ice shards and charged towards the guardian beast like a blue meteor.

The female general brandished her long sword, leading the remaining Zhengyang Army soldiers in a triumphant charge towards the guardian beast. Their steps were firm; even facing such a powerful enemy, they showed no sign of retreat. The woman in white and the Blood Shadow Sect woman worked in perfect coordination. One released a soft yet powerful white light to disrupt the guardian beast's vision, while the other moved like a ghost, her blade gleaming coldly, aiming directly for the guardian beast's vitals.

Xuanfeng channeled his wind-elemental spiritual power to its limit in the air, countless wind blades converging into a massive tornado, carrying a devastating force as it slammed towards the guardian beast. Su Ran also steadied herself, unleashing the icy power within her ice sword to its fullest extent. Frost covered the sword, and she seized an opening in the guardian beast's defenses, thrusting her sword forward. An ice dragon roared forth from the sword, baring its fangs and claws as it pounced towards the guardian beast.

Enraged by the group's fierce attack, the guardian beast roared to the sky, its black flames instantly surging several meters high. It paved the ground with its hooves, causing it to crack and hurling massive rocks at the group. Simultaneously, its black flames split into countless smaller fireballs, raining down on them like a storm of needles.

Many Zhengyang Army soldiers were unable to dodge in time, being struck by rocks or burned by the small fireballs, letting out painful screams. Lin Feng was also impacted in mid-air, his ice halberd being deflected by a boulder. The woman in white and the Blood Shadow Sect woman had to retreat hastily to avoid the small fireballs. Xuan Feng's tornado collided with the small fireballs, producing a deafening roar, but also consuming a significant amount of his power. Su Ran's ice dragon was forcibly melted by the black flames on the guardian beast as it approached.

For a moment, everyone was in dire straits. Just then, Lin Feng suddenly noticed that every time the guardian beast launched a large-scale attack, there would be a momentary disturbance in the spiritual energy fluctuations in its abdomen. Overjoyed, he shouted, "Attack its abdomen! That's its weak point!"

Upon hearing this, everyone's spirits lifted. Feng Wu, enduring the weakness of her primordial power nearing depletion, commanded the five-colored phoenix to let out a high-pitched cry, attracting the guardian beast's attention. Taking advantage of this opening, Lin Feng rushed towards the guardian beast's abdomen at top speed, his ice halberd gleaming with a dazzling blue light. The female general also directed her soldiers to concentrate their spears and hurl them at the guardian beast's abdomen. Su Ran once again concentrated ice-type spiritual power, conjuring countless sharp ice spikes beneath the guardian beast's abdomen. Xuan Feng manipulated wind blades, intercepting the small fireballs flying towards Lin Feng and the others, while simultaneously guiding the remaining wind blades towards the guardian beast's abdomen. The woman in white and the Blood Shadow Sect woman, disregarding their own safety, unleashed powerful attacks with all their spiritual power, targeting the guardian beast's abdomen.

The guardian beast seemed to sense the danger and tried to dodge, but Lin Feng and the others' attacks came too fast and too fiercely. Lin Feng's ice halberd pierced the guardian beast's abdomen first, followed by a barrage of attacks. The guardian beast let out a painful roar, its body trembling violently. The black flames on its body began to flicker, and the entire ruin space shook even more violently with its painful struggles.

The guardian beast, severely wounded in the abdomen, roared in agony, its massive body writhing violently as it tried to escape the onslaught. Within the ruins, howling winds and raging black flames created an increasingly chaotic situation.

Lin Feng gripped the Ice Halberd tightly, continuously channeling his ice-elemental spiritual power into it. The chill emanating from the halberd clashed with the black flames surging from the guardian beast's abdomen, producing a hissing sound and releasing a large amount of white mist. The female general led the Zhengyang Army soldiers, disregarding the danger, continuing to hurl spears at the guardian beast's belly. Each spear embodied the soldiers' indomitable will and thirst for victory, but unfortunately, the guardian beast's hide was thick and tough; most spears only pierced shallowly, failing to inflict fatal damage.

Su Ran below was manipulating the ice spikes with all her might. The spikes grew longer and longer, relentlessly stabbing towards the guardian beast's abdomen. However, in excruciating pain, the guardian beast stomped heavily, causing the ground to crack instantly. Su Ran lost her footing and nearly fell. Just then, Xuan Feng timely used his wind-elemental spiritual power, transforming it into a gentle force to support Su Ran. At the same time, Xuan Feng concentrated all the remaining wind blades in his hand on the wound on the guardian beast's abdomen. The wind blades, like sharp blades, cut into the guardian beast's wound, causing it immense pain.

The woman in white and the woman from the Blood Shadow Sect were equally vigilant. The woman in white rapidly formed hand seals and chanted incantations, unleashing a massive white light barrier that enveloped the guardian beast, attempting to restrict its movements. Taking advantage of the beast's distraction, the woman from the Blood Shadow Sect darted to its side like a ghost, her blade flashing with an eerie red light as she stabbed fiercely at the beast's leg joint, hoping to slow it down.

The guardian beast sensed an unprecedented threat. It angrily lashed its tail, sending the approaching Zhengyang soldiers flying once more. Then, it suddenly lowered its head, spewing out an even more ferocious stream of black flames, its target Lin Feng. Lin Feng couldn't dodge in time; the flames grazed him, instantly scorching his arm and turning his skin charred black. But he gritted his teeth and didn't release his grip on the ice halberd.

Seeing Lin Feng injured in mid-air, Feng Wu was extremely anxious. She knew that if anyone hesitated at this moment, all their efforts would be in vain. The blue flames around the Five-Colored Phoenix blazed fiercely again. Feng Wu used the last bit of her primal power to drive the Five-Colored Phoenix to crash into the head of the guardian beast. The moment the Five-Colored Phoenix collided with the guardian beast's head, a dazzling light erupted, and the enormous impact caused the guardian beast to sway slightly.

In that instant, Lin Feng seized the opportunity, using all his strength to plunge the Ice Halberd deep into the guardian beast's abdominal wound. With a scream from the beast, the Ice Halberd sank deep into its abdomen, and a gushing stream of black blood spurted out. This blood was highly corrosive, and as it splashed onto the ground, it instantly created large craters.

The guardian beast suffered a fatal blow, and its strength began to rapidly decline. Its body swayed precariously, and the black flames on its body gradually dimmed. Seeing this, Lin Feng shouted, "Everyone, give it your all! It can't hold on much longer!" Hearing this, everyone's spirits were greatly lifted, and they all used their last bit of strength to launch a final attack on the guardian beast.

With everyone's combined attack, the guardian beast finally succumbed, its massive body crashing to the ground, kicking up a cloud of dust. The entire ruins gradually returned to calm as the guardian beast fell; the black mist dissipated, and the cracks ceased to spread.

Looking at the fallen guardian beast, everyone felt both excited and exhausted. This battle had been fraught with danger; if it weren't for their unity and cooperation, they would likely have perished long ago. Lin Feng slowly walked to the guardian beast's side and pulled the Ice Halberd from its belly. Black blood still clung to the halberd, emanating an eerie aura.

At this moment, Feng Wu fell from mid-air, and the five-colored phoenix returned to her body. Her face was as pale as paper, and she swayed precariously. Lin Feng quickly stepped forward to support her. "Thank you, Feng Wu. If it weren't for your timely intervention, we would have been in real danger this time," Lin Feng said gratefully. Feng Wu smiled slightly and said weakly, "We are all one family, and we should support each other."

The female general stepped forward and looked at Lin Feng, saying, "Lin Feng, we owe our victory to you this time. If you hadn't discovered the guardian beast's weakness, we wouldn't have been able to win." The Zhengyang Army soldiers also gathered around, casting admiring glances at Lin Feng. Although the woman in white and the woman from the Blood Shadow Sect had some conflicts with Lin Feng and the others before, after this battle, they had to acknowledge Lin Feng's strength and wisdom.

Xuanfeng smiled and said, "This battle has shown us the power of unity. I believe that as long as we continue to maintain this unity, we will definitely gain more from these ruins." Su Ran nodded in agreement, "That's right, and after the battle just now, I feel that I have become more proficient in controlling spiritual power, which is an unexpected bonus."