Just as Ye Chen had subdued the black shadow and before he could catch his breath, the strange fluctuation in the secret room intensified rapidly. This fluctuation was like substantial ripples, spreading rapidly in all directions, causing an inexplicable unease to well up in people's hearts. The already dim secret room at this moment seemed to be stirred by an invisible huge hand. The candle flames on the four walls flickered erratically, sometimes bright and sometimes dim, casting the faces of everyone in an ever-changing light. Ye Chen frowned tightly, his gaze vigilantly scanning the surroundings. Suddenly, the ground began to tremble violently, and huge cracks, like hideous mouths, spread beneath everyone's feet. "Be careful!" Ye Chen shouted loudly. Before his words faded, a powerful suction force emerged from the cracks, as if trying to swallow everyone in. Ye Chen hurriedly activated his spiritual energy. The spiritual energy rushed out from his dantian like a torrent, quickly pouring into his legs. His feet were firmly planted on the ground, while he reached out and grabbed a companion beside him. The others also exerted their own methods, striving to resist this terrifying suction force. However, this force was simply too powerful. A disciple with slightly weaker strength was still sucked into the crack and vanished in an instant, leaving only a desperate scream echoing in the air. "Damn it!" Ye Chen's eyes turned red, filled with anger and helplessness. Just as everyone was struggling to hold on, a black mist suddenly gushed out from the cracks. This mist spread rapidly, and in the blink of an eye, it enveloped the entire secret room. The darkness was as thick as ink, so dense that it was almost impossible to breathe. The few weak rays of light were swallowed up completely, as if dragging everyone into an endless abyss. Ye Chen felt pitch-black before his eyes, unable to see even his own hand. "Everyone, don't panic. Gather together!" Ye Chen shouted. Everyone groped in the darkness and managed to gather together with difficulty. At this time, eerie laughter came from the darkness. "Who?" Ye Chen shouted sternly. "Ha ha, you bunch of ignorant intruders, all of you will die here today!" That voice seemed to come from the abyss of the netherworld, sending chills down one's spine. As the voice fell, black shadows suddenly rushed out of the mist, pouncing towards everyone. Ye Chen instantly mobilized his spiritual energy. The spiritual energy rapidly gathered along his meridians to the long sword in his hand, and the sword body instantly shone with a brilliant light. In this dark environment like the dead of night, the long sword in Ye Chen's hand was like a bright star, illuminating a small area around him. He brandished his sword to meet the enemy. The spiritual energy on the sword flickered and instantly cut a black shadow in half. However, the black shadow re-condensed in an instant and pounced again. Ye Chen's heart tightened. "These black shadows are so strange!" His figure flashed rapidly, and the spiritual energy circulated at high speed within his body. Each movement precisely avoided the attacks of the black shadows. At the same time, his long sword stabbed out like a storm, each strike carrying fierce spiritual energy, attempting to find the flaws of the black shadows. But more and more black shadows kept coming, overwhelming them. While fighting hard, Ye Chen observed these black shadows. He discovered that these black shadows were not entities, and ordinary attacks had little effect on them. "Everyone, use spiritual energy to attack!" Ye Chen loudly reminded. Upon hearing this, everyone mobilized the spiritual energy within their bodies and executed various spiritual skills. For a moment, rays of light flickered, and the fluctuations of spiritual energy surged in the darkness. Ye Chen executed the "Spiritual Wind Whirlwind Dance". Spiritual energy formed a rapidly rotating storm around him,卷入ing the approaching black shadows. He controlled the output of spiritual energy to continuously enhance the power of the storm, attempting to completely shred and disperse the black shadows. In this chaotic battle, the stone walls of the secret room were shaken by the impact of the spiritual energy, causing stones to fly everywhere, and deep cracks appeared on the ground. With the concerted efforts of everyone, the offensive of the black shadows was temporarily suppressed. But before everyone could catch their breath, the ground trembled violently again. This time, low roars came from deep underground. "What is this again?" A disciple asked in terror. Ye Chen's heart also sank, but at this moment, there was no time for him to think too much. Several huge monsters emerged from underground. They had huge bodies, covered with sharp bone spurs, and their eyes shone with blood-red light. The space in the secret room was originally limited, and the appearance of these several underground monsters made the scene even more crowded and oppressive. "These are... underground monsters!" Ye Chen gasped. Underground monsters were extremely fierce and powerful, with thick skin and tough flesh. One underground monster opened its blood-filled mouth and pounced towards everyone. Ye Chen's figure flashed, avoiding this attack. The monster's fangs brushed past the corner of his clothes, bringing along a gust of strong wind. He seized the opportunity to infuse spiritual energy into the long sword and executed the powerful spiritual skill "Star Break". The sword shone brightly, transforming into a huge sword energy that slashed on the underground monster. The sword energy left a dazzling trajectory in the darkness, and a deep wound appeared on the monster, but this only enraged it. It frantically waved its thick claws, bringing up gusts of wind, and lunged fiercely at Ye Chen. Ye Chen moved nimbly,穿梭ing under its attacks. While quickly adjusting the flow of spiritual energy within his body to enhance his speed and reaction ability, he constantly brandished the long sword in his hand, colliding with the monster's claws and sending sparks flying. The other underground monsters also joined the battle, and everyone was in extreme danger. Ye Chen was extremely anxious. He knew that this couldn't go on. Suddenly, a flash of inspiration came to his mind. "Everyone, focus your attacks on one underground monster!" Ye Chen shouted. Upon hearing this, everyone gathered their spiritual energy together and launched the strongest attack towards one underground monster. Ye Chen took the lead and rushed forward. Spiritual energy frantically surged towards the long sword in his hand, and the sword shone dazzlingly. His sword moves were tricky and fierce, directly aiming for the vital points of the underground monster. With each attack, he precisely controlled the explosion of spiritual energy, striving to cause the maximum damage. In this intense battle, the air in the secret room seemed to be ignited, hot and restless. With the joint efforts of everyone, that underground monster finally couldn't hold on and collapsed to the ground with a thud. Seeing this scene, everyone's confidence increased greatly, and they continued to eliminate the underground monsters one by one following Ye Chen's method. Ye Chen confronted an underground monster head-on. His figure leaped up, and spiritual energy instantly gathered in his legs, making his movements in the air more agile. After avoiding the monster's charge, he flipped in the air and simultaneously infused a large amount of spiritual energy into the long sword, stabbing fiercely at the monster's back. The underground monster felt the pain and turned to counterattack. Ye Chen dodged sideways, and spiritual energy quickly circulated to one side of his body to enhance the defense. At the same time, he kicked the monster's abdomen. The explosion of spiritual energy greatly enhanced the power of this kick. During their battle, the surrounding stone walls kept collapsing, and stones fell like rain. After a difficult battle, the underground monsters were finally all eliminated. Everyone was so exhausted that they collapsed to the ground, gasping for breath in large mouthfuls. Ye Chen looked at the chaos all over the place and secretly congratulated himself in his heart. But just at this moment, that strange fluctuation came again, and it was even more intense than before. "Could there be even more powerful enemies?" Ye Chen's heart was filled with worry. Just then, a huge portal suddenly appeared on the wall of the secret room, and a figure slowly stepped out from the portal...