The genius who counterattacked the mainland

The figures of black-robed men appeared outside the dark castle like ghosts. They brought numerous helpers with them, including enormous dark beasts whose every step shook the ground; and shadowy assassins emanating a strange aura, their figures cloaked in darkness, revealing only pairs of cold, gleaming eyes. The black-robed leader stood at the forefront, his greedy and mad eyes fixed on the box in Xu Tiancai's hands, as if it were the core of the universe.

Xu Tiancai handed the box carefully to Lin and whispered, "You must protect it well. It concerns the survival of the universe." Lin nodded solemnly and put the box into a special space magic weapon. This magic weapon emits a faint spiritual light and can temporarily conceal the breath of the box.

"Hmph, you think you can escape? Today is your death." The black-robed leader swung his dark magic wand, and a bolt of black lightning pierced the air, striking Xu Tiancai and his companions. Xu Tiancai flashed, and the power of the stars gathered at his feet. He leaped back like a meteor, and the Key of the Galaxy in his hand shone brightly. A shield of light rose in front of the crowd, blocking the black lightning. The lightning struck the shield with a crackling sound, and ripples of energy spread across it.

Agang roared, his axe ablaze with flames as he charged towards the dark beast charging ahead. Each of his steps left deep footprints on the ground, his powerful aura bearing down on his enemy like a surging wave. As he approached the dark beast, he swung his axe fiercely, sending a flaming blade slashing at the beast's legs like a rainbow piercing the sun. The beast let out a deafening roar as its legs were struck by the flaming blade, singeing its black fur. However, it didn't flinch, instead striking at Agang with its massive claws. Agang dodged nimbly, taking advantage of a gap in the beast's attack to swing his axe again at its abdomen.

Elsewhere, Lin waved her hands, muttering something, and the temperature around her plummeted. The moisture in the air quickly condensed into countless sharp icicles, raining down upon the shadow assassins. The assassins dodged, attempting to dodge the icicles, but some were still struck. Their bodies were instantly frozen, transformed into ice sculptures. However, these sculptures didn't stop. Under the influence of the dark power, cracks began to form within them, and the shadow assassins within broke free, continuing their charge towards Lin.

Xu Tiancai's eyes flashed as he scanned the battlefield, spotting the black-robed leader secretly casting a large dark magic circle. The runes of the magic circle loomed on the ground, emitting a powerful suction force, drawing the surrounding dark forces towards the magic circle. Xu Tiancai knew that once the magic circle was completed, they would face immense danger.

"Stop him!" Xu Tiancai shouted, his figure transforming into a stream of light as he rushed towards the black-robed leader. He waved the Key of the Galaxy in his hand, and a series of lightsabers shot towards the black-robed leader. The black-robed leader sneered, and several black-robed men around him quickly stepped forward and jointly cast a dark shield to block Xu Tiancai's attack. The lightsaber struck the shield, and a burst of intense light erupted. In the light, Xu Tiancai saw that the black-robed leader's magic circle was almost complete.

At that moment, a strange vortex suddenly appeared in the sky. A mysterious light flickered within it, as if connecting it to another, unknown world. A powerful surge of power emanated from the vortex, startling everyone on the battlefield. The black-robed figure paused his attack and gazed warily at the vortex in the sky.

Xu Tiancai also sensed the unusual power and seized the opportunity to launch another attack, breaking through the black-robed men's defenses and advancing on the black-robed leader. Panicked, the black-robed leader continued to cast the magic circle, pouring a large amount of his dark power into it. The magic circle shone brightly, and a powerful dark energy gushed out from the magic circle, sweeping towards Xu Tiancai.

Xu Tiancai didn't flinch. He channeled all the power of the stars and the source of the universe into the Galaxy Key. The Galaxy Key shone with an incomparably dazzling light, like a massive lightsaber, piercing directly into the dark energy. The two forces collided and squeezed each other, emitting a deafening roar. The shockwaves from the energy explosion spread outward, sending the surrounding dark beasts and shadow assassins flying.

At the center of the energy collision, both Xu Tiancai and the black-robed leader were under immense pressure. Xu Tiancai gritted his teeth, exerting all his might to maintain the glow of the Galaxy Key. Veins popped on his forehead, and sweat poured down. The black-robed leader's face paled, his body trembling slightly from the backlash of the dark energy, but the madness in his eyes intensified.

Just as the two sides were deadlocked, a massive beam of light suddenly shot out from the vortex in the sky. The beam was golden, imbued with a sacred and mysterious power. It shot directly towards the black-robed leader's magic circle. When the beam came into contact with the magic circle, the runes on the magic circle began to twist and shatter. The black-robed leader cried out in horror, "No! What kind of power is this?"

As the magic circle shattered, the black-robed leader suffered a severe backlash, spurting blood as he flew backward. The other black-robed men panicked, their attacks becoming disorganized. Seizing this opportunity, Xu Tiancai led his teammates in a fierce counterattack. Agang's massive axe slashed through the dark beasts like a scythe, each strike slaying a beast. Lin's ice magic trapped the shadow assassins in icy prisons, then shattered them, wiping them out in a cloud of ashes.

As the black-robed men retreated, a massive airship slowly descended from the vortex in the sky. Shaped like an eagle with outstretched wings, it radiated a golden light, etched with mysterious patterns that seemed to hold ancient powers. On its deck stood a group of warriors clad in ornate armor, inlaid with various gems and emitting a dazzling array of light.

One of the warriors stood at the forefront. He was tall and imposing, wearing a golden helmet with a long feather. His eyes were deep and majestic, and in his hand he held a spear radiating powerful energy. He looked at Xu Tiancai and the others and shouted, "We are the Star Guardians, and we have come with an ancient mission to prevent the resurgence of the dark forces."

Xu Tiancai felt relieved when he saw the sudden appearance of reinforcements, but he did not let his guard down. He asked, "How did you know there was danger here?"

The Star Guardian leader said, "We have observed abnormal fluctuations in the dark forces here in the cosmic map, and we have sensed the presence of the Galaxy Key. This key is the key to the balance of the universe, and we cannot let it fall into the hands of the dark forces."

The black-robed leader overheard their conversation from a distance, a sinister glint in his eyes. He knew the situation was extremely unfavorable, but he wouldn't give up easily. He pulled out a black flare and launched it forcefully into the sky. It exploded in the sky, revealing a massive black flower.

Not long after, another earth-shaking sound of footsteps could be heard in the distance. A group of knights, clad in black metal armor, galloped towards them, riding giant dark warhorses. Their armor was engraved with sinister runes, and the spears and swords they wielded exuded a thick aura of darkness.

"The Dark Knights!" The Star Guardian leader frowned. He knew that these Dark Knights were one of the Black Robe's trump cards. They were powerful, well-trained, and extremely skilled in the use of dark forces.

The Dark Knights charged onto the battlefield like a black torrent, the clatter of their hooves echoing in the air like thunder. A leading Dark Knight brandished his lance, sending a wave of black energy hurtling towards the Star Guardian's airship. The Star Guardian leader swung his lance, and a golden energy shield rose in front of the airship, blocking the wave.

"Prepare for battle!" the Star Guardian leader shouted. He led his warriors down from the airship and engaged the Dark Knights head-on. Chaos descended upon the battlefield once again as the Star Guardians and the Dark Knights engaged in a fierce mid-air battle. Their weapons clashed, sparks flew, and various energy beams flickered across the battlefield.

Xu Tiancai and his companions were also not idle. They once again joined the battle, fighting alongside the Star Guardians. Xu Tiancai encountered a Dark Knight, whose spear, brimming with dark energy, thrust towards him. Xu Tiancai dodged the spear's attack, then swung the Key of the Galaxy, sending a ray of light slashing towards the Dark Knight's neck. The Dark Knight quickly used his spear to block the blow, but the blade's force was too great, sending him reeling backward.

During the battle, Xu Tiancai discovered that these dark knights worked in perfect harmony. Working in small groups, they protected each other and attacked in an orderly fashion. Furthermore, their dark powers seemed to be able to transfer to each other, forming a powerful combined force. He realized that he couldn't let them continue to cooperate like this.

"Everyone, pay attention! Disrupt their formation!" Xu Tiancai shouted. He unleashed his star power, creating a series of small energy explosions that detonated among the Dark Knights. While these explosions didn't cause significant damage to the Dark Knights, they did manage to disrupt their formation. The Star Guardians seized the opportunity to launch an attack, inflicting considerable damage on the Dark Knights.

Elsewhere, Lin and Agang also encountered formidable opponents. Agang was locked in a fierce battle with several Dark Knights, who, using their speed advantage, surrounded and attacked Agang, leaving him overwhelmed. Lin, on the other hand, was besieged by a group of Dark Assassins, and her ice magic struggled against these agile assassins.

Seeing his teammates in trouble, Xu Tiancai tried to help, but was entangled by several Dark Knights. At this moment, the Star Guardian leader displayed his immense strength. With a swipe of his spear, a massive golden energy dragon erupted from its tip. The energy dragon roared and charged at the Dark Knights, sending the Dark Knights flying wherever it passed. The energy dragon charged directly at the enemies besieging Lin and Agang, dispersing the Dark Assassins and Knights.

"Thank you!" Xu Tiancai shouted to the Star Guardian leader.

"You're welcome. Our common enemy is the dark force. We must unite." said the Star Guardian leader.

After a fierce battle, the Dark Knights began to show signs of retreat. Seeing this, the black-robed leader was furious. He decided to take action himself. He used Dark Teleport and arrived at the center of the battlefield. He waved his dark wand, and a massive dark vortex appeared on the battlefield. From this dark vortex, countless black energy chains were released, shooting towards Xu Tiancai and his companions and the Star Guardians.

Xu Tiancai and the Star Guardian leader exchanged glances, unleashing powerful abilities simultaneously. Xu Tiancai plunged the Galaxy Key into the ground, and a massive light array rose from the ground. Rays of light shot forth from the array, colliding with the dark energy chains. The Star Guardian leader then led the warriors into a massive energy formation. Their combined power formed a golden light curtain, blocking the dark energy chains' attack.

Seeing his attack blocked, the black-robed leader unleashed his dark power even more frantically. His body began to swell, and the dark energy raged around him, as if he were about to merge with the darkness. He muttered something, and the dark vortex grew stronger, with more energy chains pouring out of it.

"He's going all out! We must break this vortex as soon as possible!" Xu Tiancai shouted. He discussed with the Star Guardian leader and decided to launch a joint attack. They led everyone, pooling their strength and charging towards the dark vortex.

As they approached the dark vortex, they felt a tremendous suction and pressure. But they didn't retreat. Xu Tiancai unleashed the power of the Galaxy Key to its fullest potential, and the Star Guardians unleashed their full divine power. An incredibly powerful column of energy shot toward the dark vortex, colliding with it and emitting a deafening roar.

The entire Dark Castle trembled, the surrounding mountains began to crumble, and massive cracks appeared in the ground. At the center of the energy collision, the black-robed leader let out a scream, his body crumbling under the powerful impact. The dark vortex gradually dissipated, but as it did so, a mysterious wave of power emanated from it, reaching deep into the Dark Castle.

"Oh no! Something might have been activated!" Xu Tiancai's face changed. He led his teammates and the Star Guardians deeper into the Dark Castle. They didn't know what awaited them, but they knew they had to stop the dark forces from spreading further.

As they entered the depths of the dark castle, they discovered a vast maze. The walls were covered in strange patterns and runes, which shimmered faintly, seemingly pointing the way. The air was filled with an ancient and mysterious atmosphere, making them feel as if they had traveled back to ancient times.

"There must be something important here. Everyone, be careful," Xu Tiancai said. They advanced through the maze, following the direction of the flashing runes. They encountered various traps along the way. Spikes suddenly appeared on the ground, flames erupted from walls, and powerful energy fields blocked their path.

After turning a corner, they found themselves in a vast hall. In the center of the hall stood the ancient ruins of a vast, dilapidated temple. The temple's doors were tightly shut. Atop them was a large circular pattern with strange symbols that seemed to flow and radiate a mysterious light.

"This relic doesn't look simple. It might be related to the source of the dark power." said the Star Guardian leader.

They approached the ruins cautiously. As they approached, the air around them seemed to freeze. Suddenly, a low roar erupted from the ruins, as if something terrifying had awakened within. Xu Tiancai and his companions clenched their weapons, ready to face the impending challenge. The secrets of this mysterious ruin were about to be revealed...