My brother is Shi Hao

"Shh, be careful!" Shi Yi grabbed Shi Hao, who was eager to try, and whispered.

The two hid behind a huge rock, their eyes fixed on the furtive figure at the cave entrance. The figure was hunched over, dressed in black, and seemed to blend in with the surrounding darkness. If it weren't for Shi Yi's keen observation, he would probably have been difficult to detect.

"Brother, is it him? The Ghost Assassin?" Shi Hao asked in a low voice.

"Almost certain." Shi Yi carefully observed the shadow's every move and said in a deep voice, "This person's movements are secretive and his aura is cold. He is very similar to the characteristics of the Ghost Shadow Assassin."

"Then what should we do now? Just rush up and catch him?" Shi Hao was eager to try, a ball of golden light had already condensed in his hand.

Shi Yi shook his head and said, "Don't act rashly. Since this person dares to show up here, he must have something to rely on. Let's wait and see what happens."

The two of them lurked patiently, time slipping away. The shadowy figure lingered at the cave entrance for a moment, seemingly checking to see if the area was safe, before slipping back into the cave.

Shi Yi and Shi Hao looked at each other, and a hint of understanding flashed in their eyes.

"It seems that this cave should be the lair of the Ghost Shadow Assassin." Shi Yi said in a deep voice, "Let's follow and take a look, but we must be careful and not alert the enemy."

After saying that, Shi Yi stood up first and sneaked towards the cave. Shi Hao followed closely behind him. The two of them entered the cave silently like two spirit cats.

The cave was pitch black, with no sight of one's hand in front of one's face. The air was filled with a damp, decaying smell. Shi Yi activated his double pupils, and a divine light flashed in his eyes, allowing him to take in the surroundings.

"There's something strange indeed!" Shi Yi whispered, "There's a formation in this cave that can block divine sense detection."

Shi Hao was shocked when he heard this. If it weren't for Shi Yi's double pupils, they would have probably triggered the formation trap if they had rushed in rashly.

"Brother, what should we do now?" Shi Hao asked.

Shi Yi pondered for a moment and said, "Now that we are here, we should make the best of it. We will proceed cautiously and act accordingly."

After saying this, Shi Yi pulled out a night-shining pearl from his bosom. Its soft light dispelled the surrounding darkness. The two of them went deeper into the rugged cave, discovering many skeletons along the way. It was unknown what kind of creature had left them behind, which was chilling.

"It seems that this ghost assassin is not only cruel and ruthless, but also very cautious." Shi Hao said in a low voice, looking at the skeleton on the ground.

Shi Yi nodded without saying anything, but his eyes became more alert. He knew that the deeper they went, the greater the danger, and they had to be more cautious.

After walking for an unknown amount of time, the tunnel in front of them suddenly opened up, revealing a vast underground cavern. In the center of the cavern stood a pitch-black altar, engraved with strange runes and emitting a sinister aura.

Next to the altar, an old man in a black robe was sitting cross-legged with his back to them, emitting a frightening evil aura from his whole body.

"The devil-hearted old man!" Shi Yi's pupils shrank slightly and he said in a low voice.

Shi Hao also clenched his fists, his eyes filled with flames of anger.

"Brother, it's him, the murderer of Elder Qingfeng!" Shi Hao said gritting his teeth.

Shi Yi nodded, a cold light flashed in his eyes, and he said in a deep voice: "Today, we will bring him to justice!"

In the gloomy cave, Shi Yi and Shi Hao glided like two nimble cats, nimbly dodging the traps and traps along the way. A sharp blade protruded from the stone wall, only to be shattered by Shi Hao's golden fist. The seemingly flat stone slabs on the ground, revealed by Shi Yi's double pupils, were a bottomless abyss below.

"Be careful!" Shi Yi grabbed Shi Hao, who was about to step on air. A divine light flashed in his pupils, and he understood the rules of the formation. "Follow my steps, don't make a mistake."

Shi Hao nodded with lingering fear and followed closely behind Shi Yi. With their extraordinary talent and tacit understanding, they danced on the edge of a knife, narrowly avoiding all the traps and finally reaching the depths of the cave.

A chilling aura washed over him. Shi Yi frowned slightly, his pupils scanning the surroundings before finally locking onto a stone table in the corner of the cave. On the table sat an ancient book, its cover blank, yet emitting a frightening aura.

Shi Yi carefully picked up the book and opened the first page. A chill instantly invaded his body, making him shiver. On the page, written in ancient and strange characters, was a sorcery called "Soul-stealing Demonic Sound," which could silently control the minds of others.

"I see..." A cold glint flashed in Shi Yi's eyes. He finally understood why the Ghost Shadow Assassin was so willing to work for the Demon Heart Elder. This "Soul-Captivating Demonic Sound" was the key to controlling him!

"Brother, what are you looking at?" Shi Hao came over curiously, but was stopped by Shi Yi.

"Don't get close, this thing is very evil." Shi Yi closed the book and put it in his arms. "Let's find Elder Qingfeng's relics first, and then leave here."

Although Shi Hao was curious, he still followed Shi Yi's advice and began to search the cave carefully. However, at this moment, Shi Hao suddenly exclaimed and pointed to a stone door deep in the cave and said, "Brother, look there!"

Shi Yi's heart tightened, and he looked in the direction of Shi Hao's finger. The stone door was half-open, and a strange red light faintly shone through the crack, accompanied by bursts of low roaring sounds, which was creepy.

"Let's go and take a look!" Shi Yi clenched his fists, a sense of unease welling up in his heart. He pulled Shi Hao and slowly walked towards the stone door, completely unaware of the terrifying scene that awaited them...

The stone door slowly opened, and a nauseating smell of blood hit them, accompanied by bursts of shrill wails, as if coming from the depths of hell. Shi Yi and Shi Hao endured the discomfort and stepped inside. The scene before them made them shudder.

This was a vast underground space, its walls inlaid with countless luminous pearls, illuminating the entire space like daylight. However, beneath this radiance lay a heinous crime. Dozens of enormous iron cages held all manner of creatures: human cultivators, powerful demonic beasts, and even exotic beasts from the nine heavens and ten earths. All lay dying, their eyes filled with despair and terror.

In the center of the room, a massive altar emanated an eerie red light. A withered, black-robed old man stood with his back to them, muttering to himself and waving his hands, manipulating the altar's formations. At his feet lay several corpses: the long-missing Elder Qingfeng and his disciples.

"What are they doing?" Shi Hao lowered his voice, his eyes full of anger and confusion.

Shi Yi remained silent, his pupils gleaming with divine light as he surveyed the formation on the altar. He saw the essence, blood, and souls of the imprisoned beings being forcibly extracted by the formation, gathering into a massive, blood-red crystal at the center of the altar. As the crystal absorbed more and more energy, its light grew increasingly dazzling, and a frightening aura permeated the air.

"Oh no! They're refining an evil weapon!" Shi Yi's face changed drastically, finally understanding the terrifying experiment that Elder Moxin was conducting. This blood-colored crystal was clearly an evil magical weapon capable of devouring the essence, blood, and souls of living beings. Once successfully refined, it would become a super weapon capable of controlling the entire cultivation world!

"He must be stopped!" Shi Hao clenched his fists and was about to rush forward.

"Don't be impulsive!" Shi Yi grabbed Shi Hao, a serious look flashing in his eyes. "Old Man Moxin's strength is unfathomable. We can't act rashly."

However, at this moment, Old Man Moxin suddenly turned around, his cold eyes fell on Shi Yi and Shi Hao, and a cruel smile appeared at the corner of his mouth.

"Haha, you two little guys, you actually found this place, you're quite capable." The old man Mo Xin said in a stern tone, with a hint of teasing in his voice, "But, since you're here, don't even think about leaving alive!"

Before he finished speaking, the figure of Old Man Mo Xin flashed and turned into a black shadow, instantly appearing in front of Shi Yi and Shi Hao. His dry palms, with a sharp gust of wind, grabbed towards them.

"Be careful!" Shi Yi's pupils suddenly shrank, and divine light burst out from his pupils. He pushed Shi Hao away and swung his fist to meet him.

"boom!"

With a loud bang, Shi Yi felt an overwhelming force coming at him, and his body flew backwards like a kite with a broken string, falling heavily to the ground, with blood spurting out of his mouth.

"Brother!" Shi Hao exclaimed and rushed to Shi Yi, his eyes full of worry and anger.

Old Man Moxin ignored Shi Hao and walked towards Shi Yi step by step, with a cruel light flashing in his eyes, as if he was looking at a lamb to be slaughtered.

"You do have great talent, but unfortunately, you're going to die here today." Old Man Moxin said in a cold tone as he slowly raised his right hand. A terrifying pressure enveloped them, making Shi Yi and Shi Hao feel suffocated.

At this critical moment, a clear voice suddenly rang out:

"Old Demon Heart, your time of death has come!"

As soon as he finished speaking, a cyan sword light pierced the darkness and headed straight for the Demon Heart Elder's face. The Demon Heart Elder snorted coldly and slapped out with his backhand. The black demonic energy and the cyan sword light collided, erupting in a deafening roar.

"Old Qingfeng, you are still alive?!" When the old man Moxin saw who was coming, a hint of surprise flashed in his eyes, but it was quickly replaced by a deeper viciousness.

"Moxin, your sins will come to an end today!" Elder Qingfeng's hair and beard stood on end, and the green sword in his hand hummed, as if responding to his anger.

Following Elder Qingfeng's appearance, dozens of figures filed in from the cave entrance, surrounding Elder Moxin. They were the elite disciples of the Ten Thousand Swords Sect, each holding a sharp sword, the tip of the sword pointed directly at Elder Moxin, their eyes gleaming with rage.

"Senior Brother Li, how are you?" Ling'er ran to the seriously injured Shi Yi and asked anxiously.

"I'm fine, Ling'er, go check on Elder Qingfeng and the others." Shi Yi struggled to stand up, but his injury was aggravated and he spat out a mouthful of blood.

"Brother Shi Yi, you are seriously injured. You should heal first." Ling'er supported Shi Yi, her eyes full of worry.

Shi Hao stood aside, clenching his fists, his gaze fixed on the surrounded Elder Moxin, his heart filled with anger and murderous intent. He secretly vowed to kill this evil demon and avenge Elder Qingfeng and those innocent lives!

Facing the siege of the Ten Thousand Swords Sect, Elder Moxin smirked instead of getting angry, a hint of madness flashing in his eyes. He howled to the heavens, his voice filled with resentment and resentment: "Want to kill me? Come on, even if I die, I'll take all of you with me!"