The genius who counterattacked the mainland

The atmosphere was heavy as they headed towards the cave Agang had discovered. The fog in the forest seemed to grow thicker, and the surrounding trees loomed in the mist, like savage monsters.

The cave entrance was enormous, pitch black like the maw of a giant beast, emitting a chilling chill. The rocks surrounding the entrance were covered in moss and some unknown luminescent fungi, adding a touch of eerie color to this gloomy place.

Xu Tiancai walked in front, the power of light flickering on his sword, illuminating a small area ahead. He stepped into the cave carefully, and with every step he could hear his footsteps echoing in the empty cave.

Not far into the cave, a chilly wind blew, carrying with it a pungent odor. Everyone covered their mouths and noses, looking around warily. Suddenly, pairs of green eyes appeared on the wall, flickering like will-o'-the-wisp. The owners of these eyes began to reveal themselves: a group of creatures that resembled wolves, but were not yet wolves. Their bodies were covered in black scales, their claws were sharp as knives, and their mouths exuded a foul stench.

Agang roared, swung his axe, and charged at the wolves. The flames from the axe illuminated the darkness, and a fierce clash ensued. A wolf lunged at Agang, but he dodged sideways, and the axe slashed down, cleaving the wolf in two. Black blood splattered on the ground, emitting an even more pungent smell.

Lin waved her hands, gathering elemental power and forming a transparent shield around them. The wolves rammed the shield repeatedly, each impact causing it to flicker. Sweat streamed down Lin's forehead as she concentrated on maintaining the shield's stability. At the same time, she cast a spell, summoning sharp earth spikes from the ground and stabbing them at the wolves. The spikes pierced several wolves, pinning them to the ground.

The mysterious figure, his black robe fluttering, moved like a ghost among the wolves. The intertwined powers of darkness and light in his hands transformed into beams of light, accurately piercing the wolves' eyes. The wolves howled in pain, thrashing about in the darkness. The mysterious figure seized the opportunity to search for the pack's leader, knowing that defeating him would plunge the pack into chaos.

The Ice Princess waved her wand, and the power of ice spread from her feet. The cave floor quickly froze, and the wolves' movements became sluggish. With a flick of her wand, sharp ice spikes rose from the ice, piercing many wolves and leaving them unable to move.

The man in white played the flute, its melodious sound echoing through the cave. The magical notes transformed into birds of light, which flew toward the wolves. Their beaks and claws were incredibly sharp. They charged at the wolves, blinding many with their eyes and scratching their bodies.

Xu Tiancai rushed toward the rear of the wolf pack, knowing that this might be the location of the wolf leader. After a fierce battle, he finally saw the leader. This wolf was larger than the others, with a sharp horn on its head that shone with an eerie light. Xu Tiancai swung his sword, brimming with the power of light, and stabbed at the wolf leader. Sensing the threat, the wolf leader opened its bloody mouth and spewed out a puff of black smoke. Xu Tiancai dodged the smoke and continued his attack on the leader.

With the concerted efforts of everyone, the wolves were gradually eliminated. But they did not dare to let their guard down, because there were more unknown dangers waiting for them in the depths of the cave.

As they continued deeper into the cave, the air grew more humid, and water began to drip from the walls. The dripping sound was particularly clear in the silence of the cave. As they walked, they discovered a huge underground lake ahead. The water was an eerie deep purple, emitting a faint mist, making it impossible to see what was at the bottom.

A stone bridge stretched across the lake. It looked a bit worn, with strange carvings on the railings, seemingly telling an ancient story. As they approached the bridge, a huge splash suddenly erupted in the lake. A giant purple octopus stretched out its tentacles from the lake and rolled towards them.

The octopus's tentacles were thick and powerful, covered in suction cups, each the size of a bowl. A-Gon swung his axe, slashing at the tentacle. The axe struck, sending a spray of purple slime flying, but the tentacle remained intact. Instead, it held onto A-Gon's axe tightly. A-Gon pulled hard, but couldn't break free.

Lin quickly cast a spell, summoning a gust of wind. It blew toward the octopus, attempting to blow it back into the lake. However, the octopus's strength was too great, and the wind only slowed its movements slightly. The mysterious figure wavered his hands, interweaving the forces of darkness and light, forming a powerful beam of energy that shot toward the octopus's tentacles. The energy beam struck the tentacle, causing it to tremble slightly and loosen its grip on Argon's axe.

The Ice Princess waved her wand, and the power of ice formed a thick layer of ice around the stone bridge. The ice spread towards the octopus, trying to freeze it. Sensing danger, the octopus used its other tentacles to strike at the ice, and the powerful force caused cracks to appear in the ice.

The man in white played a flute, and the sound transformed into waterspouts, swirling toward the octopus. The waterspouts entangled with the octopus's tentacles, restricting its movement. Xu Tiancai seized the opportunity to leap onto the octopus's tentacles. He ran toward the octopus's head, his sword and artifact gleaming with the power of light. As he neared the octopus's head, he leaped high and stabbed at its eyes. The octopus sensed danger, and a purple light suddenly shot out from its eyes. Xu Tiancai nimbly flipped in mid-air, avoiding the light and continuing his attack on the octopus.

After a fierce battle, they finally drove back the octopus. Everyone was exhausted, but they had no time to rest and continued to move deeper into the cave.

Deep within the cave, glowing crystals appeared, embedded in the walls, illuminating the surroundings. Illuminated by the crystals, they saw a massive stone doorway ahead. Intricate runes were carved into the stone doorway, emitting powerful energy waves.

"The clue we are looking for may be behind this stone gate." Xu Tiancai said.

Everyone began studying the runes on the stone door, trying to find a way to open it. Lin, with her keen sense of the elements, discovered that these runes were somehow connected to elemental power. She tried to touch the runes with elemental power. When the wind element touched the runes, they flickered for a moment, but quickly returned to their original state.

The mysterious figure carefully observed the shape and arrangement of the runes and found that they seemed to form an ancient magic circle. He began to recall his knowledge of magic circles and tried to find a way to crack it.

The Ice Princess touched the stone door with her magic wand and felt that it was sealed with a powerful ice force. She cast ice magic, trying to resonate with the ice force on the stone door and find a breakthrough to open the stone door.

The man in white played the flute, and the sound of the flute echoed around the stone gate. He found that certain notes in the flute could produce subtle reactions with the runes on the stone gate, and he began to try different combinations of notes, hoping to open the stone gate.

Agang was looking for mechanisms around the stone gate. He knocked on the ground and walls with his battle axe, hoping to find hidden buttons or levers.

After considerable effort, they finally found a way to open the stone door. Lin used the power of the wind element to activate a set of runes in a specific order. The mysterious figure cracked the key to the magic circle. The Ice Princess used ice magic to break the ice seal. The man in white used flute music to find the resonant frequency of the runes. Agang also found a hidden mechanism on the wall next to the stone door. As they activated these methods simultaneously, the stone door slowly opened.

Behind the stone doorway lay a vast cavern, filled with various treasure chests and shelves containing ancient scrolls and magical items. In the center of the cavern sat a stone platform, upon which rested a crystal fragment emitting a black glow. This crystal fragment had a similar aura to the dark crystal ball they had seen in the Dark Castle.

"This is the fragment of the dark crystal ball!" said Xu Tiancai.

They cautiously approached the stone platform. Suddenly, a sinister laugh echoed from the cave. "Did you think you could take the fragments so easily? You're so naive!" a voice echoed through the cave.

Suddenly, a group of skeleton warriors in black armor emerged from behind treasure chests and shelves. These skeleton warriors held rusty weapons in their hands, their eyes flashing with green flames. They charged towards the crowd, and a battle was imminent.

Agang was the first to meet the enemy, swinging his axe with great force, smashing a skeleton warrior with each swing. But the skeleton warriors were too numerous, and they kept coming from all directions.

Lin cast elemental magic, summoning fire elements to form a wall of fire. The wall of fire burned towards the skeleton warriors, reducing many of them to ash. However, some skeleton warriors passed through the wall of fire and continued to charge towards them.

The mysterious figure used the space-travel ability of his cloak to shuttle between the skeleton warriors. The power of darkness and light in his hands turned into sharp blades, repeatedly stabbing the skeleton warriors' joints, making them unable to move.

The Ice Princess waved her wand, and the power of ice froze the approaching skeleton warriors. The frozen skeleton warriors shattered into ice cubes under the wave of her wand.

The man in white played the flute, and the sound of the flute turned into arrows of light, shooting towards the skeleton warriors. The arrows of light accurately hit the skeleton warriors' heads, extinguishing their soul fires.

Xu Tiancai rushed towards the stone platform, intending to retrieve the dark crystal sphere fragment while the others fended off the skeleton warriors. But just as he was about to reach the platform, a massive black figure descended from the cave ceiling, blocking his path. This black figure was a massive skeleton knight, riding a skeleton horse and holding a massive black longsword.

The Skeleton Knight swung his sword and slashed at Xu Tiancai. Xu Tiancai raised his sword and the artifact to block the blow, and the two collided with a sharp metallic sound. The Skeleton Knight's power was so great that Xu Tiancai was shocked and took a few steps back.

The Skeleton Knight swung his sword again, launching a series of attacks at Xu Tiancai. Xu Tiancai kept dodging and blocking, searching for the Skeleton Knight's weakness. He found that the Skeleton Knight's attacks, while powerful, were somewhat monotonous. So, after dodging one attack, he rushed towards the Skeleton Knight's side and stabbed it in the ribs. The power of light was injected into the sword, and a crack was pierced in the Skeleton Knight's ribs.

The Skeleton Knight seemed enraged. It roared, and black flames ignited on its black sword. It launched an even more fierce attack on Xu Tiancai, and the black flames rushed towards him. Xu Tiancai cast a shield of light to block the black flames. However, the black flames were extremely hot, and the shield began to crack under the flames.

While Xu Tiancai was fighting the Skeleton Knight, others were also trying to fend off the attacks of the Skeleton Warriors. Some gaps appeared on Agang's battle axe, and his physical strength was rapidly depleting. Lin's magic power was almost exhausted, and the power of her elemental magic was gradually weakening. The mysterious figure suffered some injuries under the siege of the Skeleton Warriors, and his black robe was torn in several places. The Ice Princess's body was trembling, and her ice power began to backfire under continuous use. The white-clothed man also slowed down the speed of playing the flute, and his face was a little pale.

Xu Tiancai knew he couldn't continue like this; he had to eliminate the Skeleton Knight quickly. He channeled more of the power of the Heart of Light Crystal into his longsword and the artifact. The artifact's rainbow light intensified, and the power of light emanating from the longsword shone as brightly as the sun. He charged toward the Skeleton Knight, unleashing his ultimate skill—Light Slash. This strike fused all his strength with the power of the Heart of Light Crystal, transforming into a massive radiant sword energy that slashed at the Skeleton Knight.

The Skeleton Knight sensed this powerful attack and raised its black sword, attempting to block it. However, the power of the Sword of Light was too great, slicing through the Skeleton Knight's black sword and then severing the Skeleton Knight and its Skeleton Horse in half. The Skeleton Knight's body gradually dissipated under the illumination of the Light, and the flame of its soul was extinguished.