My low-key cultivation of immortality was discovered by the emperor in my diary.

The boundary of the sea.

This is a vast and boundless world of the sea.

The sea breeze, carrying a slightly salty and damp scent, gently caressed the vast and boundless sea, creating ripples.

On the shimmering sea, islands of all sizes are scattered like stars.

Here, whether they are cultivators or mortals, everyone lives off the sea.

Sea monsters naturally became the primary targets for cultivators to hunt.

Their demonic bodies are incredibly tough, and their inner cores contain powerful spiritual energy. Their entire bodies are precious materials for making magical artifacts and elixirs.

Therefore, hunting sea monsters became a means of survival for many cultivators.

However, in recent years, Jing Honghai's siren has suddenly begun to act strangely.

They are no longer as foolish and weak as before, but have become exceptionally fierce and manic.

Even the weakest first-tier sea monsters, such as clam spirits, demon crabs, silver fish, and red shrimp, become a formidable threat when they gather together.

The unusual behavior of these sea monsters undoubtedly brought enormous trouble to the lower-level fishermen.

In order to catch fish and earn spirit stones, they risked everything to continue hunting sea monsters.

However, the ferocity of the sea monsters caused a sharp increase in the number of fishermen's casualties, and for a time, the Jinghong Sea area became a dangerous place in the eyes of both cultivators and mortals.

This matter quickly attracted the attention of the high-ranking cultivators.

Therefore, the Hundred Swords Pavilion, which controls the Jinghong Sea area, dispatched a small team of cultivators to investigate the truth behind the sea monster's strange changes.

This team was led by two Golden Core cultivators, one male and one female, named Yu Yi and Nangong Xue respectively. They were both heroic and charismatic.

They made a brief stop on Misty Cloud Island, carefully inquiring of the local cultivators about the specific circumstances of the sea monster's mutation. Comparing this with the information from their sect, they had already formed a plan in mind.

Then, he led six junior brothers and sisters in the Foundation Establishment stage, piloting a spirit boat, breaking through the waves, and finally diving into the sea.

As the depth of the dive increased, the surrounding light gradually dimmed. Only the occasional flashes of fluorescent creatures and the faint light emitted by the water-repellent shields on the cultivators' bodies could illuminate this dark underwater world.

Chi Chi!

Yu Yi flicked his finger and unleashed a sword aura, slicing through several low-level sea monsters that pounced on him.

Those sea monsters were only first or second tier, but now they have become exceptionally ferocious, attacking anyone they see.

Upon seeing this, the Foundation Establishment disciples behind them immediately put away the demonic beast's body without the slightest negligence, while Nangong Xue made hand seals and chanted incantations to gather her blood energy to prevent them from attracting more demons to attack.

“Something is definitely not right in this sea,” Yu Yi said, his expression darkening slightly, as if he had already noticed something amiss. “For a mere first or second-tier sea monster to dare to be so presumptuous, there must be something wrong with it.”

Nangong Xue nodded gently: "This is precisely the purpose for which the sect sent us here. According to the sea chart, there is a coral reef ahead, which is a gathering place for demons. We must all be careful and guard against any unforeseen events."

"Yes, Senior Sister." Upon hearing this, the Foundation Establishment disciples all perked up and became solemn.

They knew the journey was dangerous, but they were not afraid, because with their senior sister Nangong Xue and senior brother Yu Yi by their side, they felt more confident.

Upon seeing this, Yu Yi's face flashed with displeasure, but he remained silent and simply led the way forward to explore.

Nangong Xue and her group followed closely behind, gradually venturing deeper into the area.

Sure enough, many low-level sea monsters had gathered near the coral reef.

Normally, these sea monsters are of low intelligence, foolish and weak. Whenever a human figure approaches, they scatter and flee like startled birds.

But now, they seemed to have gone mad, rushing towards Yu Yi, Nangong Xue and the others like a pack of starving jackals and tigers, wanting to tear them to pieces.

Each of those sea monsters seemed insignificant individually, but a rough count revealed that there were nearly ten thousand of them.

They gathered together in dense clusters, like dark clouds pressing down overhead, which was extremely frightening.

Upon seeing this, the six Foundation Establishment disciples' expressions changed drastically. Under normal circumstances, if they were attacked by so many sea monsters, they would have no choice but to run away.

But today, they were fortunate enough to witness the prowess of two Golden Core cultivators, which gave them more confidence.

"Hmph, courting death!" Yu Yi sneered, his hands quickly forming hand seals as he unleashed a powerful greatsword technique.

A sword light swept out, instantly killing a large group of low-level sea monsters.

However, the results were far from what he had expected.

The stench of blood filled the air, like an invisible fire igniting the frenzy in the hearts of the sirens.

More sirens rushed forward one after another!

They showed no regard for the deaths or injuries of their own kind, only wanting to bite through the thin water-repellent shield and devour the people hiding inside.

Just thinking about the consequences is terrifying.

Upon seeing this, Nangong Xue frowned and quickly formed hand seals, erecting a shield in front of her.

The shield was colorful and flower-shaped, but it could barely hold up against the sirens that surged in like a tidal wave.

"Boom boom boom!"

Undeterred by the possibility of death or injury, the sirens rushed forward, scrambling to ram the shield. The flower-shaped shield immediately trembled, as if it were about to shatter at any moment.

In an instant, the eight people were completely surrounded by these layers of sea monsters.

"These monsters are really strange!" Nangong Xue's expression turned solemn, no longer as composed as before. She had no choice but to increase her magical output to maintain the shaky flower-shaped shield.

Otherwise, once the shield breaks, they will inevitably fall into an even more passive situation.

Seeing this, the six Foundation Establishment disciples also used their abilities to either reinforce the shield or kill the demons, daring not to go all out.

Yu Yi did not hesitate and used the Greatsword Technique again.

A sword light flashed through the dense horde of sea monsters, each swing cleaving hundreds of them in two with the ruthless force of autumn wind sweeping away fallen leaves.

Before long, half of the low-level sea monsters were dead, and the surrounding sea was dyed scarlet, a shocking sight.

Nangong Xue secretly realized something was wrong.

She hurriedly advised, "Senior Brother Yu, the spread of demon blood may attract more demons. Let's leave here first."

To protect the disciples behind her, Nangong Xue had already expended a great deal of energy maintaining the shield.

In a short while, she had depleted 30% of the spiritual energy in her dantian, and she was already feeling alarmed, wanting to go back and reconsider.

The six Foundation Establishment disciples were also filled with fear and trepidation.

The low-level sea monsters that they could usually kill at will were now so fearless that even the powerful Golden Core senior uncles were finding it somewhat difficult to deal with them.

Even elites from sects like them are in such a predicament, no wonder the nearby independent cultivators and fishermen suffered heavy casualties and had to report to their superior sects for help.

This unexpected turn of events filled them with unease.

Yu Yi, however, wanted to press his advantage. He raised an eyebrow and said with great bravado, "They're just a bunch of low-level sea monsters. Watch how I deal with them!"

After saying that, he noticed the hesitation of the others and quickly added, "Some of these sea monsters were natural enemies, but now they've all gathered here. There might be something strange hidden in this coral reef!"

Upon hearing this, Nangong Xue's expression softened slightly, and she nodded gently, saying, "What Senior Brother said makes sense."

She then instructed her disciples behind her: "Take good care of yourselves and do not be careless."

"Yes, Uncle-Master!" Several Foundation Establishment disciples quickly agreed, each using their own methods, either summoning magic treasures or employing secret techniques, and preparing to flee at any moment.

Seeing this, Yu Yi showed some displeasure, but he was too lazy to remind him any further.

He silently fought his way through the enemy, taking the lead and charging into the coral reef.

Seeing this, Nangong Xue wanted to stop it, but it was too late. She could only dispel the flower-shaped shield, and with a flash, she quickly followed.

There weren't many demons left, so the Foundation Establishment disciples continued their fight.

Although these low-level sea monsters are of little value and wouldn't catch the eye of the two senior uncles, their sheer number means that each of the six of them could get over a thousand, which would be enough to sell for a considerable amount of spirit stones in the Treasure Pavilion.

Therefore, they all exerted extra effort, determined to kill all these sea monsters.

Yu Yi was about to venture deeper into the coral reef to investigate when he unexpectedly discovered that there were sea monsters lying in ambush there.

An extremely ugly coral harpoon came hurtling towards him. His pupils contracted sharply, and he hurriedly swung his sword to defend himself.

The weapons clashed, producing a muffled thud on the seabed that shook the surrounding waters.

At this moment, Nangong Xue rushed over and was shocked to see the enemy before her: "A third-tier sea monster?!"

They are currently in the shallow waters of Jinghonghai, where only first-tier monsters usually appear, and second-tier monsters are not common, let alone third-tier sea monsters.

A third-tier siren is already a leader-level character, capable of commanding tens of thousands of ordinary siren, making them very difficult to deal with.

The third-tier sea monster in front of them had already transformed into most of its human form, leaving only a fish head and the mottled scales on its body.

It gurgled out a long string of bubbles, looking as if it were laughing heartily, full of mockery towards Yu Yi and the others.

Immediately afterwards, it raised another coral harpoon in its hand and commanded the surrounding sea monsters, "Seize them and offer them as a blood sacrifice!"

The surrounding sea monsters became agitated and surged towards Yu Yi and his group.