The genius who counterattacked the mainland

Black-robed figures emerged like ghosts outside the dark castle, bringing with them even more helpers than before. The eyes of these cosmic creatures, corrupted by the power of darkness, gleamed with bloodlust, and their roars shook the surrounding black rocks slightly. Xu Tiancai clutched the box containing the key to releasing the demon's seal, his expression grim. He knew this battle would be more difficult than any before.

"Everyone, be careful! We can't let them succeed this time!" Xu Tiancai's voice was firm and steady, giving his teammates a sense of courage. They nodded in agreement, each gripping their weapons tightly, ready to face the impending storm of attacks.

The black-robed leader launched the attack first. With a wave of his dark wand, a wave of inky black energy surged towards Xu Tiancai and his companions. This wave continuously distorted space as it traveled, instantly shattering the black rocks in its path. Xu Tiancai's eyes flashed, and he channeled the power of the stars and the source of the universe into the Galaxy Key. With a powerful wave of light, a brilliant shield instantly appeared. The shield collided with the dark energy wave, unleashing a burst of intense light, as dazzling as the sun, illuminating the entire area surrounding the Dark Castle.

Lin waved her hands, muttering something to herself, and the temperature around her plummeted. Countless sharp ice spikes rapidly sprouted from the ground, piercing the black-robed men and their helpers. The ice spikes gleamed coldly in the darkness, like the scythe of the Grim Reaper. The cosmic creatures, controlled by the power of darkness, rushed forward recklessly. Some were directly pierced by the ice spikes, but many were only slightly hindered and continued to pounce on Xu Tiancai and his men.

Ah Gang roared, his muscles bulging as he charged at his enemy like a mountain. He swung the great axe with ferocity, each swing creating a powerful gust of air. The axe's lightning power shone brightly, and when it collided with the cosmic creatures, the lightning spread along their bodies, shocking some smaller creatures into convulsions. However, the skin of larger creatures was too tough, and the lightning only left a few charred marks on their skin.

Xu Tiancai seized the moment his light shield blocked the dark energy wave and, in a flash, charged towards the black-robed leader. He knew that if he could subdue the black-robed leader, he would have a fighting chance of victory. The black-robed leader sneered at this, and two black-robed guards beside him immediately stepped forward, blocking Xu Tiancai's path. The two guards wielded black swords, emanating a rich dark aura. Their figures moved like shadows, their swordsmanship sharp, and each strike aimed at Xu Tiancai's vital points.

Xu Tiancai nimbly dodged the black-robed guards' attacks. The Galaxy Key transformed into a lightsaber in his hand, engaging them in a fierce battle. The lightsaber and the black sword clashed, sending up showers of sparks with each collision. Xu Tiancai discovered that these two guards were even more powerful than any black-robed men he had encountered before. Their coordinated attack was uninterrupted, making it difficult for him to break through.

Elsewhere, the team members were locked in a fierce battle with the black-robed figure and the cosmic creatures. The battle was intense, with both sides using all their might. One team member cast a fire spell, sending a massive blaze through the enemy, engulfing some of the cosmic creatures. However, the black-robed figure immediately cast a dark shield, blocking the spread of the flames and seizing the opportunity to launch a counterattack, firing a dark ray towards the team member. The team member quickly dodged, narrowly avoiding the attack.

Seeing their siege was proving ineffective, the leader of the black-robed men began to chant an ancient, dark spell. As the spell rang out, the blood-red sky grew ever more intense, as if dripping blood. Bolts of black lightning struck from the clouds, not striking Xu Tiancai and his men, but instead landing on the ground surrounding the castle. The black rock on the ground began to melt under the lightning's bombardment, then reassembled to form gigantic black rock puppets.

These puppets were enormous, their every step shaking the ground. Their arms were thick and powerful, waving towards Xu Tiancai and the others. Seeing this, Lin immediately cast a freezing spell, attempting to freeze the puppets. However, the puppets were so massive that the freezing spell only formed a thin layer of ice on their surfaces, unable to stop their movement. Ah Gang rushed forward and struck the puppet's leg with his great axe, but only a shallow mark was left.

Xu Tiancai saw his teammates in trouble, and he grew anxious. He decided to make a quick decision and break through the black-robed guards' defenses. He took a deep breath, channeling even more of his stellar power into the Galaxy Key. The Galaxy Key's light shone brightly, transforming into a brilliant halo. With lightning speed, Xu Tiancai, carrying the halo, rushed towards the black-robed guards. The black-robed guards sensed this powerful force and quickly combined their forces to cast a dark barrier in an attempt to resist. The halo collided with the dark barrier, creating a piercing sound and cracks appearing on the barrier.

Just as Xu Tiancai and the black-robed guards were locked in a stalemate, a strange wave suddenly erupted from within the castle. This wave seemed to possess a mysterious power, causing both combatants to pause. Seizing the opportunity, Xu Tiancai increased his strength, breaking through the black-robed guards' dark barrier with one blow, and his light wheel slashed towards them. Unable to dodge, the black-robed guard was struck by the light wheel, letting out a scream before his body dissipated in black smoke.

Without stopping, Xu Tiancai charged towards the black-robed leader. A flash of panic crossed the black-robed leader's eyes as he saw Xu Tiancai break through the guards, but he quickly regained his composure. He produced a black gem imbued with a powerful dark force. He hurled it toward Xu Tiancai, and it exploded in mid-flight, creating a powerful dark shockwave. Xu Tiancai raised the Key of the Galaxy to block the shockwave, but was still thrown back a few steps.

"Hmph, you can't stop us." The black-robed leader sneered.

At this moment, the ripples within the castle grew stronger, and a beam of light shot up from within. A mysterious relic seemed to loom within the light. The appearance of this light and the relic attracted everyone's attention.

"What is that?" The black-robed leader frowned, a greedy look in his eyes. He changed his target and flew towards the light within the castle. Xu Tiancai knew he couldn't let the black-robed leader get close to the light and the ruins, so he quickly chased after him. His teammates also broke free of the enemy and followed Xu Tiancai.

When they entered the castle, they discovered the light emanated from a massive circular platform. Carved with ancient and mysterious runes, the platform shimmered with golden light, creating a stark contrast to the surrounding darkness. In the center of the platform lay a small pyramid-shaped ruin, emitting powerful energy fluctuations that seemed to hold the secrets of the universe.

As soon as the black-robed leader entered the castle, he rushed toward the platform. He wanted to seize the power within the ruins and use it for his own benefit. Xu Tiancai shouted, "We can't let him succeed!" He increased his speed, reaching the edge of the platform at the same time as the black-robed leader. The black-robed leader waved his wand, and a beam of dark energy shot towards Xu Tiancai, trying to stop him. Xu Tiancai dodged to the side, then attacked the black-robed leader. The two engaged in a fierce battle at the edge of the platform.

The runes on the platform seemed to react to their battle, their golden light flickering even more intensely. Some of the runes detached from the platform, transforming into golden chains that entwined themselves around the black-robed leader. Terrified, the black-robed leader quickly used dark energy to resist. But the golden chains were too powerful, and he gradually began to lose his resistance.

Xu Tiancai seized the opportunity to launch an attack, inserting the Galaxy Key into a rune slot on the platform. The energy on the platform seemed to resonate with the Galaxy Key, and a powerful energy column rose from the platform, rushing towards the black-robed leader. The black-robed leader was struck by the energy column, thrown back, and fell heavily to the ground.

"What the hell is this place?" roared the black-robed leader.

Xu Tiancai ignored him and began to study the platform and the ruins. He discovered that the runes seemed to tell an ancient story about the birth of the universe and the seal of a mysterious power. And this ruins might be the key to the seal.

At that moment, the cosmic creatures and black-robed figures controlled by the dark forces also entered the castle. Seeing the platform and the ruins, they looked greedy and rushed towards the platform without hesitation. Xu Tiancai's teammates immediately rushed forward and engaged the enemies, preventing them from approaching the platform.

The battle raged once again, the castle reverberating with the roar of clashing skills and the shouts of the people. Lin's ice magic and Agang's great axe tore through the enemy, inflicting immense damage. However, the enemy was too numerous, and they gradually began to feel overwhelmed.

Xu Tiancai tries to find the secret of the ruins. He finds some small holes on the ruins, which seem to require specific items to open. He thinks of the box in his hand, which contains the key to lifting the seal of the demon. Could it be related to the ruins?

He took out the box and tried to place it over a small hole in the ruins. As the box approached the hole, a light emanated from it, echoing the light from the box itself. The box slowly opened, and the items within emanated a mysterious power. This power merged with the energy of the ruins, causing other small holes in the ruins to illuminate.

The black-robed men saw this scene and knew that the relic was of great value. The black-robed leader shouted, "Capture the relic at all costs!" The black-robed men and the cosmic creatures attacked even more frantically, trying to break through the defenses of Xu Tiancai's teammates.

Xu Tiancai's teammates fought with all their might, but one was struck by a cosmic creature and severely injured. But they didn't retreat, remaining steadfast. Xu Tiancai looked at his injured teammates, filled with anger. He poured even more power into the ruins, attempting to accelerate its activation.

As the ruins absorbed the power of the objects within the box, they began to transform. The stones on the pyramid-shaped surface began to shift, revealing a crystal ball within. The crystal ball radiated a multicolored light, a miniature universe seemingly operating within it.

"What is this?" Xu Tiancai looked at the crystal ball in surprise.

The black-robed figures attacked even more frantically upon seeing the crystal ball. They desperately rushed towards the platform, putting Xu Tiancai and his teammates under immense pressure. At this critical moment, the crystal ball suddenly unleashed a powerful energy wave, sweeping towards the black-robed figures and the cosmic creatures. Wherever the energy wave struck, the enemies were repelled, and the dark aura of the cosmic creatures controlled by the dark forces seemed to be weakened.

"This is our chance!" Xu Tiancai shouted. He led his teammates in a counterattack, charging towards the enemy. Their attacks rained down on the enemy like a torrential rain, inflicting heavy damage. The black-robed leader tried to organize a counterattack, but the energy wave from the crystal ball threw them into chaos.

During the battle, Xu Tiancai discovered that the energy waves of the crystal ball seemed to have a restraining effect on the dark power of the black-robed man. He thought of a way, and rushed towards the crystal ball, trying to control the energy of the crystal ball and transform it into a weapon to attack the black-robed man.

The black-robed leader observed Xu Tiancai's actions and guessed his intentions. He desperately rushed towards him, attempting to stop him. The two engaged in a thrilling duel before the crystal ball. Xu Tiancai wielded the Key of the Galaxy, clashing fiercely with the black-robed leader's dark wand. Each collision unleashed a powerful surge of energy, distorting the surrounding space.

The crystal ball's energy waves continuously impacted the black-robed men, gradually weakening their power. Xu Tiancai's teammates seized this opportunity and launched an even more powerful attack. Under their combined force, the black-robed men and the cosmic creatures began to retreat.

However, the black-robed leader refused to accept defeat. He unleashed a forbidden dark magic that, at the cost of his own life force, granted him immense power. His body was engulfed in black flames, within which countless souls seemed to struggle. He launched a fatal attack at Xu Tiancai, a blow so powerful that if struck, Xu Tiancai would surely die.

Xu Tiancai sensed this powerful threat and combined the power of the stars, the power of the source of the universe, and some of the energy from the crystal ball to form an extremely strong shield. The black-robed leader's attack struck the shield with a deafening roar. The shield cracked under the powerful attack, but it still managed to block the attack.

Xu Tiancai seized the opportunity to launch a counterattack. He transformed the Galaxy Key into a massive lightsaber and stabbed the black-robed leader. The black-robed leader's body had slowed due to the forbidden magic he had cast, making him unable to dodge. The lightsaber pierced the black-robed leader, and he let out a scream as his body began to dissipate. But before fading, he used his last bit of strength to throw a dark rune at the crystal ball.

The dark rune struck the crystal ball, causing it to flicker, seemingly affected. Worried about the crystal ball's problems, Xu Tiancai hurried forward to investigate. Just then, another violent tremor erupted from the castle, and a massive crack appeared in the ground. A powerful dark aura emanated from the crack, as if something terrifying was about to emerge.

"Oh no! The situation has changed!" Xu Tiancai shouted. He and his teammates nervously watched the crack, unsure of what dangers lay ahead. Although the leader of the black-robed men had been defeated, the remaining ones were still lurking around. This battle was far from over, and a new crisis was quietly brewing within the dark castle...