I was reborn as a young master in an invincible family of immortals

Lin Yun gripped his sword tightly and charged like a tiger at the massive, ferocious monsters. Though he was determined to fight, he knew the difficulty of this battle. These monsters, crafted from black metal, exuded a cold, hard aura, and it was clear at first glance they were not to be trifled with.

He thought to himself, "The enemies we've encountered along the way have become increasingly formidable. I wonder how many secrets this Shadow Cult has hidden, creating so many powerful monsters to stop us." But now that things have come to this, the only way to survive is to give it our all.

The mysterious cavern they found themselves in now resembled a time-forgotten underground city. The cold crystals embedded in the walls resembled pairs of indifferent eyes, emitting a dim, chilling light. This light shone coldly upon the monsters, reflecting an even colder luster, as if cloaking them in a sinister armor. The crystals' light cast eerie shadows on the damp stone walls, distorting as the monsters moved, like a group of ferocious ghosts peering from the darkness.

The ground trembled slightly at the monster's heavy footsteps. Each step struck a blow against Lin Yun's heart, making him even more nervous. The ground was paved with a rough, strangely textured rock, the patterns of which seemed to tell an ancient and mysterious story, one no one could understand. Occasionally, a few drops of water fell from the stalactite tips overhead. The dripping sound was particularly abrupt in the silent and tense atmosphere, like the countdown to death.

Lin Yun unleashed a series of sharp sword energies, slashing precisely at the oncoming monsters. However, when the sword energies struck the monsters, only a crisp sound of metal clashing was heard, leaving only shallow scratches on the monsters' mirror-smooth surfaces, inflicting no substantial damage.

"These monsters have such strong defenses!" Lin Yun was shocked, his brows furrowed. He knew that this couldn't go on, and he had to come up with a new strategy as soon as possible.

Su Yao, in the back, was concentrating on maintaining the spiritual shield while casting supporting spells to enhance Lin Yun's spiritual power and attack power. Beads of sweat covered her forehead, and her hands formed seals faster and faster, her expression growing more serious. She worried that the shield wouldn't hold out much longer, and Lin Yun's attacks were having little effect. She had to find the monster's weakness.

In the fierce battle, Lin Yun continued to attack while carefully observing the monsters' every move. He knew that if he wanted to turn the tide of the battle, he had to find the monsters' weaknesses.

Suddenly, he noticed that whenever a monster launched an attack, the two balls of blue flame burning in its diamond-shaped eyes would instantly grow brighter, as if gathering strength. Furthermore, at the moment the eyes lit up, a subtle disturbance of spiritual energy would appear in other parts of the monster's body. Although this disturbance was brief, Lin Yun keenly detected it.

"Could this be their weakness?" Lin Yun's heart stirred, and a glimmer of hope flashed in his eyes. He decided to observe for a while longer to confirm his opinion.

So, he deliberately made some provocative movements to provoke the monsters to attack more frantically. Sure enough, every time the monster attacked, the changes in its eyes and the disordered fluctuations in its spiritual power reappeared.

"Su Yao, I seem to have found the weakness of these monsters! When they attack, the eyes on their heads light up, and there will be a momentary disturbance of spiritual power in their bodies. Let's try concentrating our strength to attack that part!" Lin Yun shouted loudly, with a hint of excitement in his voice, as if he saw a ray of light in the darkness.

Su Yao was cheered up when she heard this, and immediately responded: "Okay, Lin Yun, I will cooperate with you to the best of my ability!"

At this time, although the battle was still intense and fierce, a glimmer of hope ignited in the hearts of both of them, thinking that perhaps they could use this to turn the unfavorable situation around.

Lin Yun saw the perfect moment. When a monster attacked again and the blue flames in its eyes suddenly brightened, he shouted, "Now!"

The sword in his hand shone brightly, and he concentrated all his spiritual power on the tip of the sword, unleashing his strongest strike. With unstoppable force, the sword pierced the monster's head precisely where its eyes had brightened and where its spiritual power was fluctuating in disorder.

At the same time, Su Yao quickly formed seals with her hands, muttered something, and cast an auxiliary spell to enhance the power of the attack, increasing the power of Lin Yun's sword to the extreme.

The tip of the sword precisely pierced the monster's weak spot. A dazzling flash of light flashed, followed by a shrill scream. A deep crack instantly appeared on the monster's head, and the blue flames died out. Immediately afterwards, its body began to tremble violently, and then it collapsed to the ground, transforming into a pile of black metal fragments.

"Success!" Lin Yun and Su Yao shouted in surprise at the same time.

Seeing the effect, the two of them gained confidence and continued to attack other monsters using the same method. As more and more monsters were defeated by their concentrated attacks, they began to show signs of panic, their attack rhythm was disrupted, and their numbers gradually decreased.

Lin Yun and Su Yao gritted their teeth, seized the opportunity, and continued to launch more fierce attacks, finally successfully eliminating all the monsters. The entire cave space suddenly became quiet, leaving only the heavy breathing of the two and the spiritual power fluctuations that had not yet completely dissipated.

Lin Yun breathed a sigh of relief, feeling relieved. But he also knew that this was only a temporary solution to the immediate crisis; they were still a long way from truly unraveling all the secrets and finding a way out. He looked at the sword in his hand, then at Su Yao beside him, thinking, "Luckily, she's by my side, otherwise I really don't know what to do this time."

After a short rest, Lin Yun's gaze once again fell on the strange box emitting a pale blue light. Because of the sudden appearance of the monster, they had not had time to properly study the box and the clues hidden within.

At this moment, the cold crystal light within the cave still enveloped the box, making the delicate patterns and runes on its surface appear even more mysterious in the interplay of light and shadow. The stone platform upon which the box rested was crafted from a hard, finely textured black rock. Its surface was as smooth as a mirror, reflecting the light and shadow of the box, as if another, illusory box existed on this cold stone platform.

He walked forward, gently picked up the box, and examined it carefully. The box was still cold to the touch, and the exquisite patterns and runes carved into its surface, reflected in the light, seemed to speak of its mystery. Through the transparent part of the box, he could see the blurry images inside. The scene he had seen before, of people in strange costumes performing a special ritual, was still there, but the disc emitting purple light was a little clearer.

"This box must contain a lot of key information. We have to study it carefully." Lin Yun said to Su Yao, with a hint of concentration in his eyes.

Su Yao nodded in agreement. She also walked forward and looked at the box carefully again with Lin Yun.

Lin Yun tried shaking the box gently to see if it would react, but it didn't make any unusual movement. He then gently touched the box with his spiritual power, sensing the complex fluctuations within, hoping to find some new clues.

Su Yao cast a detection spell, quickly forming seals with her hands and muttering something to herself, trying to gain a deeper understanding of the box. After a while, she opened her eyes and said solemnly, "Lin Yun, I feel that in addition to the spiritual energy fields and blurry images I discovered earlier, there seems to be a hidden power inside this box. This power seems to be related to the material of the box itself and the runes on it. Moreover, I also noticed that the purple disk in the image seems to have a significant impact on the spiritual energy structure of the entire box, like a key that unlocks some deeper secrets."

Lin Yun's heart was moved when he heard this. He thought, if that's the case, then as long as he figured out the secret of this purple disc, he could unlock all the secrets of this box?

"Let's take a closer look at this disc and see if we can find any breakthrough from it." Lin Yun said, his eyes fixed on the purple disc in the image, trying to find some clues from its time, the runes engraved on it, and the light it emitted.

Lin Yun and Su Yao stared at the purple disc in the image within the box, studying it closely. The image within the box seemed like a mysterious microcosm, shrouded in a pale blue light. The purple disc, located at the center of the image, radiated a mysterious and alluring glow, like the brightest star in the night sky, drawing their attention.

Lin Yun discovered that although the runes engraved on the disc looked complicated, it seemed that the combination of some runes was similar to some of the runes they had seen on the walls of the pagoda before, except that the runes here were more delicate and profound.

"Su Yao, look at these runes. They seem to be related to what we saw on the walls of the pagoda." Lin Yun said, pointing to the runes on the disc.

Su Yao took a closer look and nodded, saying, "Well, it's indeed very similar. Maybe there is some connection between this disc and the pagoda that we don't know yet."

As they were carefully studying the runes, Lin Yun suddenly noticed a circle of extremely fine protrusions on the edge of the disk. These protrusions were faintly visible under the reflection of the purple light. Curious, he gently touched the protrusions with his spiritual power.

Unexpectedly, when his spiritual power touched the bulge, the box suddenly emitted a slight humming sound, and then, the purple disk in the image began to slowly rotate. As the disk rotated, some runes on the surface of the box also flickered, as if echoing with the disk.

"This...what's going on?" Lin Yun said in surprise.

Su Yao also looked puzzled. She said, "I don't know either, but it looks like something has been triggered or some hidden function has been activated."

As the disc continued to spin, the image within the box shifted. The image depicting a special ritual scene gradually faded, replaced by a new scene. A mysterious valley appeared, shrouded in mist. Like a soft white veil, the mist drifted slowly across the valley, sometimes dispersing, sometimes gathering, as if playing a game of hide-and-seek with everything within.

Faintly visible were ancient buildings and exotic plants and trees. Some resembled towering towers, their bodies covered in the marks of time, yet still standing tall, exuding a quaint and mysterious aura. Others resembled low temples, their roofs shaped like the wings of some mythical creature, ready to take flight at any moment.

And those strange flowers, plants and trees have various shapes. Some flowers are as big as washbasins, and the petals are colorful, as if they were painted with the most gorgeous pigments in the world; some trees have thick trunks and strange patterns on the bark, like ancient totems, and the branches are full of gleaming fruits. Those fruits emit an attractive fragrance, but people dare not touch them easily, for fear that there are some unknown dangers hidden in them.

Deep in the valley, there is a fountain emitting colorful light. There seem to be some people surrounding the fountain. They are carrying out another mysterious activity, but the picture is a bit blurry and the specific details are unclear.

"This new image seems to be showing us new clues. Maybe it is related to the secret we are looking for." Lin Yun said, his eyes fixed on the new image, his heart full of curiosity and anticipation.

Lin Yun looked at the mysterious valley in the newly revealed image in the box, and a strong urge surged in his heart, wanting to go there immediately to explore. He felt that there might be the key to unlocking all the secrets.

"Su Yao, we have to go to this valley and take a look. Maybe that's where we can find the answers." Lin Yun said to Su Yao, his eyes revealing firm determination.

Although Su Yao was a little worried, she also knew that this might be their only clue at the moment. She nodded and said, "Okay, Lin Yun, but we have to be careful. There will definitely be many dangers along the way."

After the two of them discussed it, they prepared to leave the cave space and head towards the valley shown in the image.

They ascended the cave's steps and returned to the pagoda's top floor. The pagoda's rooftop was still somewhat disheveled after the previous battle. The once ornate decorations were now incomplete, with traces of monster attacks still lingering in some places. The runes on the walls were also partially dimmed, as if they had been severely damaged in the fierce battle.

But Lin Yun and Su Yao didn't care about these things. They walked straight towards the exit of the pagoda.

After leaving the pagoda, the world outside remained as mysterious and unpredictable as ever. The sky was thick with dark clouds, so thick that they seemed ready to fall at any moment, shrouding the entire world in darkness. Occasionally, a few flashes of lightning flashed by, like sharp swords, instantly tearing through the darkness and illuminating the surrounding gloom, but they were fleeting, making the darkness seem even deeper.

The ground was uneven and covered with all sorts of strange rocks and vegetation. The vegetation had bizarre shapes, some resembling savage monsters, others distorted human forms, giving people a chilling feeling. The rocks also varied in shape. Some were sharp as cones, as if they could easily pierce through anything; others were enormous, lying across the road like small hills, forcing people to detour.

Lin Yun and Su Yao walked cautiously in this unfamiliar land, relying on the general direction of the image in the box, heading towards the mysterious valley. Along the way, they remained vigilant and paid attention to the movements around them, fearing that they would encounter any more dangerous monsters or traps.

As they hurried along, Lin Yun and Su Yao came to a broad river. The water surged and roared, a sound like the roar of a mighty army, jarring their eardrums. The water was an eerie deep purple, as if tainted by some sinister force, and against the gloomy sky, it seemed even more eerie.

The river was surging, with waves rising one after another, crashing against the rocks on the shore and splashing high. As the water fell, it formed short-lived rainbows, but these rainbows had no beauty at all, instead exuding a strange aura, like the smile of a devil.

The rocks on both sides of the river are also strange and varied. Some are like crouching beasts, staring at the river with a fierce look; others are like huge fingers pointing to the center of the river, as if warning of something.

"The water in this river doesn't look right. How can we get across?" Lin Yun said with a frown. He thought to himself that this journey was indeed full of difficulties. He had just solved the problem of the monsters and now encountered this insurmountable river.

Su Yao also looked at the river and said, "Let me try to use my spiritual power to detect the situation of the river."

As she spoke, she formed hand seals with both hands, muttered something, and began to cast a detection spell. After a moment, she opened her eyes and said solemnly, "Lin Yun, this river contains a powerful evil spiritual energy, and the current is swift. Ordinary methods will probably be difficult to cross. If you force your way across, your spiritual energy will likely be eroded by the river, and you may even be in danger of your life."

Lin Yun groaned inwardly upon hearing this. He looked around and saw that there were no bridges or other facilities to cross the river. Moreover, the surroundings were extremely dangerous, and it seemed impossible to find a detour.

Just when they were at their wit's end, huge black whirlpools suddenly emerged from the river, spinning rapidly and making a piercing whistling sound. Then, from the whirlpools emerged several narrow, eel-like monsters, their bodies emitting black slime, and their eyes were like green lightbulbs, flickering an eerie light in the darkness.

"New enemies are coming, Su Yao, let's get ready to fight!" Lin Yun shouted loudly. He gripped the sword in his hand tightly, and once again unleashed sharp sword energy, rushing towards the group of monsters.

Su Yao also quickly formed seals with her hands and muttered something. A spiritual shield rose around the two of them. At the same time, she cast auxiliary spells to enhance Lin Yun's spiritual power and attack power, preparing for this new battle.