Rise of the Otherworld.

Faced with the demon's black flames, Zhang Hao and the others quickly dodged. Wherever the flames swept, rocks melted instantly, vegetation turned to ash, and the air was filled with a pungent, burning smell. The scorching heat seemed to incinerate everything, transforming this already eerie valley into a purgatory.

Zhang Hao tightly protected the ancient book in his arms. The light became stronger and stronger. The warm and soft light was like a ray of hope in this moment of darkness and fear.

"This ancient book must hold a secret. Perhaps it can help us defeat this demon!" Zhang Hao exclaimed, his eyes gleaming with hope. His voice was firm and powerful amidst the chaos, like a shot of confidence for everyone.

The old man's eyes were solemn. "Everyone, concentrate your strength and rely on the light of the ancient books!" His voice was steady and serious. The staff in his hand flickered with a faint light, echoing the light of the ancient books.

Everyone nodded and gathered around Zhang Hao, continuously pouring their own magical power into the light emanating from the ancient book. Their faces were filled with determination and perseverance, and each of them stared intently at the light, as if pinning all their hopes on it.

The light gradually converged into a massive pillar, soaring into the sky and colliding with the demon's black flames. In an instant, the world was ablaze with light. The intense light was like countless brilliant stars exploding simultaneously, blinding the eyes. The powerful energy wave caused the entire valley to tremble, and deep cracks appeared in the ground, sending debris flying everywhere.

Faced with this overwhelming force, the demon was forced to retreat. Its body was thrown back several feet by the light, and it roared angrily. The sound was deafening, as if it could shatter everyone's soul.

"Damn humans, you can actually use this mysterious ancient book to fight against me!" The devil's voice was full of unwillingness and anger. Its blood-red eyes stared at Zhang Hao and others, as if it wanted to eat them alive.

Zhang Hao and his companions seized this opportunity to launch a counterattack. Zhang Hao wielded a longsword, its blade shrouded in the light of ancient texts, greatly increasing its power. He leaped forward and lunged at the demon. The sword traced a beautiful arc through the air, piercing the wind with a sound, as if cleaving the darkness in two.

The demon stretched out its claws to resist, but was slashed by Zhang Hao's sword. Black smoke emerged from the wound, and the demon roared in pain, its movements becoming more frantic and violent.

The black-robed figure also displayed his unique skills, moving around the demon like a ghost, constantly attacking the demon's weaknesses. His figure was as fast as lightning, making it difficult to predict, and each attack landed accurately on the demon's vital parts.

Although the herbalist was weaker, he cheered everyone on and looked for opportunities to disrupt the demon with hidden weapons made from herbs. His eyes were filled with determination, and despite fear, he knew he couldn't retreat.

Under the siege of the crowd, the demon gradually lost ground. Its body was covered with wounds, and black blood continued to flow, staining the ground with a dark black. But the demon did not give up. It suddenly roared to the sky and its body began to change.

Its already massive form grew even larger, towering before them like a mountain. Its spikes grew sharper, gleaming with a cold light, as if capable of piercing through anything. Its eyes gleamed with an even more ferocious glint, making it difficult to gaze directly upon them.

"Oh no! This demon is going all out!" the old man exclaimed. There was a hint of worry in his voice, but the staff in his hand didn't stop, continuing to inject magic power into the light.

Zhang Hao and others felt a tightness in their hearts, but they did not retreat. Instead, they became more determined to defeat the devil.

"No matter what, we must fight to the end!" Zhang Hao shouted. His voice echoed in the valley, full of fearlessness and courage.

The group attacked again, engaging in a final, desperate struggle with the demon. Zhang Hao's sword lashed at the demon like a whirlwind, each strike laced with the determination to kill. The black-robed figure, like a phantom, continuously inflicted damage to the demon. The old man's magic radiated continuously at the demon, and the herbalist's hidden weapon accurately struck the demon's eyes.

The demon fought back frantically, each of its attacks carrying devastating power. But Zhang Hao and the others were not afraid. They worked closely together, supporting each other and resisting the demon's attacks together.

The battle entered a white-hot stage, and both sides had reached their limits. However, Zhang Hao and others relied on their tenacious will and indomitable spirit and never gave up.

At this moment, the light from the ancient book suddenly became incredibly bright, illuminating the entire valley like daylight. Illuminated by this light, the demon let out a final scream before dissolving into a puff of black smoke and vanishing without a trace.

Everyone collapsed to the ground exhausted, gasping for breath. Their bodies were covered in wounds and blood, but their faces showed smiles of victory...