The air crackled with tension as Chen Jiuzhang, gripping the white - glowing crystal tightly, faced off against Watanabe Miyuki. Dark tendrils of energy coiled around Miyuki like serpents, while the Celestial Master Order and the jade pendant on Chen Jiuzhang blazed with golden light, creating a stark contrast between the forces of light and darkness.Miyuki sneered, her eyes glowing an intense purple. "You think a mere crystal can stop me? You're more naive than I thought, Chen Jiuzhang." With a flick of her wrist, the dark crystal fragment in her hand emitted a deafening shriek, and the shadowy minions surrounding them charged forward, their weapons aimed at the group.Su Nian's chains whipped through the air, intercepting several attackers. "Don't let them get to Jiuzhang!" she shouted. Zhang Chengying, his broken peachwood sword crackling with purple electricity, leaped into the fray, parrying and thrusting with newfound determination. Wu Laogou, his face etched with concentration, threw out a series of talismans that exploded on impact, sending shockwaves through the ranks of the enemy.Shen Qingluan, her forehead beaded with sweat, focused all her energy on maintaining the shield of golden light. But Miyuki's dark energy was relentless, pounding against the shield like a storm. "Jiuzhang... hurry!" she gasped, her voice strained.Chen Jiuzhang closed his eyes, trying to make sense of the visions that had flooded his mind when he touched the crystal. Images of his 二叔 fighting against a horde of dark creatures, of the Gui Xu Secret Realm as a source of both creation and destruction, and of a prophecy that foretold the coming of a savior. He could feel the power of the crystal surging within him, but he struggled to control it.Suddenly, a voice echoed in his mind. "Release your fear, and embrace the power." It was a voice he recognized—his 二叔's. "The white crystal is the key to balance, but only a pure heart can wield it."With a deep breath, Chen Jiuzhang opened his eyes. A newfound resolve burned in his gaze. He raised the crystal high, and a beam of blinding white light shot towards the ceiling. The dome of stars above them began to spin, and a portal opened, sucking in the shadowy minions.Miyuki's eyes widened in shock. "No! You can't do this!" she screeched. Dark energy coalesced around her, forming a massive, shadowy hand that reached out to crush Chen Jiuzhang. But the white - glowing crystal emitted a protective aura, repelling the attack.As the battle raged on, Wu Laogou noticed something strange. The pool of black and white liquid in the center of the chamber was reacting to the clash of powers. "The pool! It's the source of the crystal's power!" he shouted. "We need to destroy it to stop Miyuki once and for all!"Chen Jiuzhang nodded. "Cover me!" he yelled. Shen Qingluan increased the intensity of the shield, while Zhang Chengying, Su Nian, and Wu Laogou launched a final, all - out assault on Miyuki and her remaining minions.With the crystal in hand, Chen Jiuzhang charged towards the pool. Miyuki, realizing his intent, abandoned her minions and flew towards him, her eyes filled with hatred. "You won't get away with this!" she screamed, unleashing a blast of dark energy that threatened to engulf him.But Chen Jiuzhang was determined. He channeled the power of the crystal, the Celestial Master Order, and the jade pendant, and a powerful wave of golden and white light burst forth. The light collided with Miyuki's dark energy, creating a cataclysmic explosion.As the smoke cleared, the pool of black and white liquid began to boil and churn. Chen Jiuzhang, using the last of his strength, plunged the crystal into the pool. The liquid erupted, and a shockwave rippled through the chamber. The walls began to crumble, and the ceiling threatened to collapse.Miyuki, her body battered and broken, tried to escape, but a tendril of white light from the crystal wrapped around her, pulling her towards the pool. "No! I can't be defeated!" she shrieked. But it was too late. With a final, ear - splitting scream, she was consumed by the pool, and the dark crystal fragment fell to the ground, shattered.The group, exhausted but victorious, huddled together as the chamber began to fall apart. "We did it," Chen Jiuzhang said, his voice weak but filled with relief. But as they made their way out of the chamber, they knew that their journey was far from over. The Gui Xu Secret Realm still held many secrets, and with the crystal's power now in their hands, they had a responsibility to use it wisely.