He said:
"My three fellow Taoists, the Yin Yang Cave will be at its weakest in half a year. It is most suitable to go underground during this period."

"And to deal with the ghosts, you Taoist friends will also need to prepare some special magical instruments and treasures. So even if you agree immediately, you will have to wait half a year before you can enter the cave."

"But before you leave, I need you to use the page of the Styx in my hand to write down the oath of keeping your mouth shut with your blood."

"I will be a villain first and a gentleman later. I don't want the Peiying Pill and Yinzhi Horse incident to become a hot topic during this period."

"The Page of the Styx? It is an evil weapon that will bring disaster to those who violate the oath written on it. Hasn't it been missing for hundreds of years?"

When the big man heard this, he immediately screamed in surprise.

When Chen Yun heard this, he was also shocked.

In that dark and mysterious underground market, an old man named Fu spent a large sum of money to purchase an evil weapon specifically for this operation.

Although the effect of this evil weapon is not as shocking as the rumors say, it can make fellow Taoists keep their mouths shut for a short period of time.

When it comes to the death of Feng Tianxing from the Heavenly Demon Sect, Fellow Daoist Chen may not know the reason, but Fellow Daoists Bai and Yuan must know it very well.

Feng Tianxing was also a cultivator in the middle stage of the Nascent Soul. The three Taoists must be unwilling to personally explore the danger of the mystery of his death, the old man surnamed Fu said indifferently.

"Okay, with such a rare treasure as the Peiying Pill, I will not give it up easily. I will definitely keep the appointment on time in half a year."

The big man thought for a moment with a gloomy expression, and then made a promise resolutely.

After saying that, he flashed and suddenly waved towards the black page.

I saw an invisible force surging out in an instant, sucking the black page of the book several feet in front of me.

Then, he opened his mouth slightly and a ball of blood spurted out, hovering in front of the mysterious page.

Then, the big man stretched out his index finger, used his blood as ink, and quickly wrote some ancient characters on the page.

These ancient characters seem to carry endless mysterious power, and every stroke contains profound mysteries.

After a moment, his fingers suddenly stopped.

At this moment, a ghost head with a green face and fangs slowly emerged from the black flames.

The ghost head was hideous and terrifying. It gave the big man a sinister smile, and then took a deep breath.

In an instant, the blood words on the pages flew up, as if summoned, and instantly sank into the ghost's mouth, then disappeared without a trace in a flash.

As the blood text disappeared, the ghost head instantly turned into a wisp of green smoke and drifted away, as if it had never appeared.

Witnessing this extremely strange scene, Chen Yun's heart sank suddenly, and an inexplicable uneasiness quietly spread in his heart.

The old man surnamed Fu took back the page, looked through it carefully, showed a look of satisfaction, and then turned to Bai Yaoyi.

Bai Yaoyi hesitated for a moment, then raised her hand helplessly to grab the page of the book and did the same thing. The ghost head appeared again and disappeared mysteriously.

When the old man looked at Chen Yun, Chen Yun sighed in his heart. Although he was afraid of this unknown thing, he had no other choice at this moment.

Then he pointed at the paper expressionlessly, and the object instantly flew in front of him.

Chen Yun stared at the page for a moment, bit his tongue and spurted out a ball of blood, and quickly used the blood to write the contents of the confidentiality agreement on the page.

There was a flash of blood, and the ghost head reappeared in the black flames with a sinister smile. Just as he was about to speak, something in Chen Yun's body suddenly moved, making a strange sound, which was not loud but clearly audible.

The old man and others did not react at all, but when the ghost heard the sound, his face twisted and deformed, and he let out an unintelligible low roar before disintegrating and disappearing, as if fleeing in fear.

A subtle confrontation ensued between Chen Yun, the old man surnamed Fu, and the four big men.

After witnessing the scene before them, the old man surnamed Fu and the four big men could not help but look stunned, as if they had seen an extremely rare spectacle.

Chen Yun looked a little strange. After taking a deep breath, he calmly and gracefully raised his sleeves and lightly swept across the page.

At the same time, he said calmly:
"You don't need to think too much about it. I will arrive on time."

"It's just that this thing seems to conflict with something in my body, so I can't write the oath."

"However, Chen is a casual cultivator. In the next six months, he will stay in the southern border and will not make any move to leave."

"Moreover, Chen will keep this matter a secret and will not reveal it to anyone. So, even if this thing is not there, it will not matter."

Just as he finished speaking, the page of the Styx was lifted up by a soft blue cloud and slowly flew back to the old man surnamed Fu.

The old man surnamed Fu reached out and grabbed the page of the book, with a look of surprise still on his face. For a moment, he didn't know how to deal with this situation.

You know, in addition to this mysterious and extraordinary treasure, there is also the Styx Page.

He really had no other way to ensure that the other party would truly abide by the agreement and not disclose the matter of the Peiying Pill.

At this slightly awkward moment, the beautiful woman in black who had been silent all this time suddenly spoke up and broke the deadlock.

"Brother Fu, I think what Fellow Daoist Chen said makes a lot of sense. Since there is a problem with this Styx Page, it doesn't matter if we don't use it. I firmly believe that Fellow Daoist Chen will not break his promise."

This beautiful woman in black had been silent like a mute before, but at this moment she suddenly spoke.

Her voice was slightly hoarse, but it seemed to carry an indescribable magnetism. When her autumn eyes turned slightly, her whole body instantly exuded a different kind of charm.

After hearing what his junior sister said, the old man surnamed Fu had a hint of hesitation in his eyes. After thinking for a moment, he finally nodded in agreement.

He said: "Since the Styx Page is ineffective for you, I will not force you to do so."

"However, I need to leave a mark on you. As long as you don't leave Southern Border, the mark will disappear on its own after half a year. Do you mind, Mr. Chen?"

Chen Yun smiled slightly and agreed without hesitation: "Okay, my whereabouts are not secret. Fellow Daoist, please cast a spell."

Upon hearing this, the old man did not hesitate to make a gesture with one hand, chanted a spell, and then a blue light shot out.

Chen Yun looked carefully and confirmed that it was just an ordinary mark. He raised his arm and let the blue light enter his body and disappear.

Upon seeing this, the old man surnamed Fu showed a look of satisfaction, put away the page of the Styx, and gave a few more instructions to everyone.

Daoist Fellow Bai needs three days to consider. My junior sister and I will wait here for three days. Brother Yuan and Daoist Fellow Chen can prepare first.

Although the Valley of Ten Thousand Poisons is filled with poisonous flowers and plants, it poses little threat to us. However, I still hope that Fellow Daoist Yuan will bring a few poison-repelling treasures with him so that he can use them when we enter the Yin-Yang Cave to avoid excessive consumption of mana.

The Poison Saint Sect is very familiar with the matter of exorcising poison. Yuan will definitely do his best and will take the lead now.

After saying this, he saluted everyone with his fists, then slapped the spirit beast bag at his waist, released the giant spirit turtle, and flew away on the clouds wrapped in the gray and violent wind.

Seeing this, Chen Yun had no intention of staying any longer. After saying goodbye, he turned into a green rainbow and flew away into the air.

Although half a year seemed tight for him, it was barely enough to refine the Three-Flame Fan.

As for the treasures to deal with ghosts, he already had the Evil-Repelling Thunder and the Soul-Crying Beast in his hands, so there was no need to make any special preparations.

Chen Yun was eager to refine the treasure fan, obviously to prepare for possible accidents.

He knew very well that having the treasure fan and the humanoid puppet would greatly increase his safety during the unknown journey. With this caution in mind, Chen Yun drove the escape light and headed straight for Silver Snake Mountain.

More than ten days later, Chen Yun arrived above this peculiar mountain range.

This mountain range stretches for three or four hundred miles, and is slender and winding, just like a giant silver snake.

Most of the trees growing on the mountain are a strange species with light silver leaves. Looking down from a high vantage point, the name Silver Snake Mountain is well deserved.

Chen Yun flew directly to the "head" of Silver Snake Mountain without stopping.

As we approached, hot wind blew in our faces, mixed with a pungent smell of sulfur.

Soon, several exposed volcanic heads came into view. They were cone-shaped and ugly in shape.

What is even more shocking is that low roars can be heard from these craters from time to time, and some even directly spew out flying ash, which is an extremely spectacular sight.

In this mysterious and fantastic area, various colored lights flash around many volcanoes.

These lights intertwined and reflected each other, forming a strange scene.

In these craters, many monks were busy shuttling back and forth. After careful counting, there were actually dozens of monks gathered here.

In terms of cultivation realm, most of these cultivators are in the foundation-building stage.

There are also cultivators in the Jindan stage, but their number is very small, only a few.

This is actually not difficult to understand. For ordinary cultivators, once they successfully form a pill and possess their own pill fire, they will focus their energy on refining magic weapons and naturally will not set foot here again.

As for the Nascent Soul cultivators, there is no trace of them here.

Chen Yun controlled the escape light and slowly stopped, hovering in the air.

His eyes were sharp as torches, carefully examining everything below him. Suddenly, a blue light flashed in his pupils.

In an instant, the fire vein information in this area appeared clearly in his consciousness.

After a moment, Chen Yun used his keen perception to accurately find the location of the fire vein with the strongest fire properties.

Suddenly, an idea flashed in his mind, and his escape light suddenly accelerated, flying straight to a specific location between the two volcanoes.

When the escape light was close to the ground, still a hundred feet away from the ground, Chen Yun suddenly controlled the escape light to stop.

He shook his sleeves slightly, and seven or eight golden swords shot out from his sleeves.

These golden swords quickly circled around him, forming golden rays of light.

Chen Yun quickly made hand gestures and shouted an order in a low voice.

Along with this low shout, the flying swords made a crisp sound, followed by a bright light, which instantly turned into a huge golden light several feet long.

This dazzling golden light carried powerful force and slashed towards the ground with an unstoppable momentum.

Suddenly, there was a rumbling sound from below, and a strong light burst out from the place where the sword hit, which was dazzling.

Chen Yun was slightly moved. As his mind moved, the sword light surrounding his body quickly swirled, and the light gradually converged, revealing a huge crack more than twenty feet wide.

The crack was deep and dark, as if leading to an endless abyss.

The monks who were refining weapons nearby were startled by this sudden strange phenomenon. They put down their work and looked in the direction of Chen Yun.

Some people couldn't hold back their curiosity and flew over here on their magic weapons.

Feeling the actions of these cultivators, Chen Yun's face darkened, and then he released the majestic aura of a Nascent Soul level cultivator.

A powerful spiritual pressure rose into the sky and spread out in all directions with Chen Yun as the center.

The cultivators within a radius of dozens of miles were shocked by this aura, and those who originally wanted to find out what was going on immediately turned around and left.

Some monks who were closer hurriedly left their weapon refining places and fled in all directions.

They were well aware of the power of this senior master and were afraid that they would get into trouble if they were not careful.

Seeing that the monks around him had wisely avoided this place, Chen Yun was secretly satisfied.

His figure flashed and he fell directly towards the crack below. In a flash of light, he disappeared into the crack.

Soon after, all the cultivators who came to Silver Snake Mountain to refine weapons knew that there was a Nascent Soul level cultivator here.

Therefore, everyone became extra cautious and tried to avoid approaching this place.

In a mysterious area, with the crack as the center, the area within a radius of ten miles is like a restricted area and everyone avoids it.

As time passed, the crack was silent at first, then there were bursts of thunder after a month, and after another month the thunder gradually became less frequent, with clear sounds like a phoenix crying in the sky, and then it returned to silence again.

While Chen Yun was concentrating on refining the treasure, more than a dozen male and female monks in different costumes gathered in a side hall of the Jinjing Palace.

Among them were Taoist nuns, Taoist priests, monks and Confucian scholars, all of whom had reached the Nascent Soul stage or above. Among them, a square-faced monk in brocade robes and an old woman holding a golden cane had reached the middle Nascent Soul stage.

The old man in the black hat was also among them.

Everyone sat quietly on the chairs in the hall, silent. Some of them seemed a little anxious, looking outside the hall door from time to time, as if waiting for someone.

"Eleventh brother, are you sure you didn't make a mistake? Was it him? But three hundred years ago, I witnessed the death of my seventh uncle with my own eyes."

The square-faced monk suddenly asked the Taoist priest with white hair and beard opposite him, with a trace of worry on his face.

In a mysterious hall, the atmosphere was a little solemn.

An old Taoist priest had a strange face and it was difficult for others to mistake him. Even if some people had doubts and thought he might be an imposter, the unique magic weapon, the Cold Moon Blade, in his hand was unmistakable.

After hearing the relevant remarks, an old Taoist priest couldn't help but respond with a wry smile.

At this time, another old woman in the middle stage of the Nascent Soul said grimly:
"Don't be too nervous, second brother. Whether it's true or not, we'll know after a while. With so many of us here, how could we make a mistake?"

“If this person is really the Seventh Uncle, then it is naturally God’s favor to the Ye family. If it is fake, even if he is a great cultivator in the late Nascent Soul stage, he will never be able to step out of this palace safely.”

The square-faced monk nodded slightly and agreed, "That being said, it's always better to be cautious."

After saying that, he sighed softly and said no more.

Time passed quietly and a full hour passed.

Just as everyone was waiting, the sound of bells could be heard faintly in the distance.

Immediately afterwards, a figure suddenly flashed at the door, and a tall and thin man appeared there for some reason.

He took a light step and suddenly arrived at the center of the hall. (End of this chapter)