There was no light in the dark cavern except for the bonfire lit by the lone swordsman, the dim glow of the fire flickering, and everything was shadowed except for a silhouette.

By the light of the fire, Yun Ziyuan carefully explored this cave, the cave is not big, the stalactites on the four walls are drooping, like bead curtains, in addition, there are some dilapidated stone tables and chairs, there is nothing else, not even a way out.

"It's the same as the belly of the mountain where the Shura Hall is, there is no way out, it's like digging out of thin air in the mountain......"

Yun Ziyuan closed his eyes and felt it, there was a faint sense of wind on the surface of his skin, and the bonfire had been burning for a long time, indicating that this cave was not completely closed as it seemed.

"I just don't know, it's a phantom array, or if it really re-blocks the path that was originally opened up, leaving only a few small ventilation holes......"

Looking back at the lone swordsman who was resting by the campfire, Yun Ziyuan felt that this should be the phantom array, otherwise how did they get in now, or did the lone swordsman who had temporarily lost his magical powers have another way to teleport in?

"Could it be the reason for this wooden key?"

Holding the wooden key given by the Lone Swordsman, Yun Ziyuan was a little curious, but the Lone Swordsman hadn't told him this question before, so he didn't want to ask too much, after all, this was a secret place for the Lone Swordsman to retreat and cultivate, and the fewer people knew how to get in and out, the safer it would be.

The lone swordsman has now informed all the forbidden and related cracking methods in this cave, and has also handed over the wooden key to Yun Ziyuan, which has already shown great trust in Yun Ziyuan, if he also informs Yun Ziyuan of the outermost method of entering and exiting, then this cave is completely defenseless against Yun Ziyuan, even Yun Ziyuan himself, he doesn't dare to think that the lone swordsman who has only met for a day will do this.

At this moment, Yun Ziyuan had already gone through all the matters related to this cave that the lone swordsman had said, he held the wooden key in his left hand, touched the stone wall with his right hand, and walked around the cave.

When the wooden key in his hand shimmered, Yun Ziyuan stopped and inserted the wooden key into the stone wall.

There was no hidden keychain there, in fact, it was a real and complete stone wall with no holes, but Yun Ziyuan was blessed with sword qi, and he inserted the wooden key into it, so that the stone chips flew around.

This is the first difficulty that the lone swordsman is unable to open the cave now, without the Yuan Qi Immortal Method, no matter how superb his sword skills and physical strength are, he will only smash the wooden key into the stone wall, and he will not be able to insert the fragile wooden key into the hard stone wall.

The wooden key was inserted into the stone wall, and then Yun Ziyuan held the key and twisted it, and then pulled it outward, and actually pulled out a rainbow light belt from the stone wall.

Yun Ziyuan grabbed the wooden key, pulled the rainbow light band to the stone wall opposite, and he inserted the wooden key into the stone wall again, so that in front of Yun Ziyuan, in this cave, a colorful ribbon appeared across the whole field.

"Are you tired?"

The lone swordsman looked at the scene in front of him, he was already accustomed to it, and he asked Yun Ziyuan.

Yun Ziyuan waved his hand, stood there and gasped for a few breaths, then cheered up and pulled out the wooden key again. He was indeed a little tired, the process of pulling the rainbow light belt was far more difficult than he imagined, the light belt was obviously just illusory, but the resistance was very terrifying, even if Yun Ziyuan's body had been baptized by thunder, it was very difficult.

Pulling out the wooden key, Yun Ziyuan took a deep breath, and pulled out the identical rainbow light belt from the stone wall again, which was inserted into another stone wall by Yun Ziyuan.

According to the guidance of the lone swordsman, Yun Ziyuan's hands and feet were very tired, and they were already congested and swollen to the point of being ugly and disgusting, and under Yun Ziyuan's unsparing pulling, this cave has been filled with many rainbow light bands, if you look down from above, you can see that these light bands are intertwined into a magic circle, which should be a magic circle that opens the cave.

"Why be so serious, rest for a while, wait for a while and then go, this light band will not disappear easily. The lone swordsman looked at Yun Ziyuan's eyes with a sparkle, as if he saw the back of Yun Ziyuan's continuous efforts to cultivate all these years in order to take revenge.

"Whew...... And one last one...... The sooner you enter the cave, the sooner you can recover...... Although you said that it is difficult for the people of Tianmen to find this place, I think it is better to prepare early...... Since I'm okay, I don't need much rest......"

When he said a word, Yun Ziyuan did not forget to speed up his breathing, let himself recover his strength as soon as possible, and then pulled out the wooden key and walked towards a stone wall one last time.

"Smack!"

A moment later, with the sound of the mechanism linking, the wooden key was tightly held by the stone wall, and then I saw that the rainbow light bands in the cave formed a magic circle, sinking downwards and imprinted on the ground.

The lone swordsman called Yun Ziyuan, the two hid in the corner of the cave, looking at the rainbow magic circle on the ground and constantly inhaling vitality, changing light and shadow, the lone swordsman said to Yun Ziyuan: "Although I discovered this cave at the beginning, but I couldn't solve this magic circle, or your father helped me find the drawing method of this magic circle......

"My dad still understands this ......"

Yun Ziyuan touched his nose, although he still remembered his memory of before he was five years old, but to be honest, because of the sword qi on his body at that time, he actually rarely communicated with his father, and naturally knew very little about his father.

"Haha! Your father knows a lot of things, he has everything involved, although he is not particularly proficient, but he is also very powerful!" The lone swordsman was very happy when he talked about Yun Xingqiu, and it seemed that the figure of Yun Xingqiu who was groping here decades ago appeared in front of him.

At this moment, the floor shook for a while, and I saw that under the action of the magic circle, the floor rose and fell, and it actually cracked a hole, a tunnel that continued to extend downward.

"You go down, the core of the cave is right down here, although I have already told you all the forbidden secrets, but you still have to be careful, I won't go down and cause trouble for you." ”

The lone swordsman found a relatively intact stone chair and sat down, Yun Ziyuan nodded to him, pulled out the wooden key, and walked towards the tunnel.

......

The tunnel was deep, and the long stairs kept spiraling downward, and as Yun Ziyuan walked down step by step, an oil lamp suddenly lit up, emitting a little light, illuminating the direction of Yun Ziyuan.

"These oil lamps, looking at the shape of the system is very ancient, at least 10,000 years ago, so calculated, those Daoyan prohibitions inside should not have much residual power, at most only the power of the law phase, no wonder the lone swordsman who was still in the realm of the law phase at that time was able to crack it and get this Daoyan Cave Mansion!"

Yun Ziyuan suddenly sighed, but it was a pity that there was no Dao Yan secret treasure left in this cave mansion, otherwise it could be used to deal with the Heavenly Gate Divine Lord.

The wooden key in his hand has been exuding an inexplicable breath, and these oil lamps have felt its breath, and only then have they lit up, at this time, Yun Ziyuan walked to a step that was obviously much wider, and the wooden key suddenly shone brightly, much brighter than the oil lamp.

With this light, Yun Ziyuan saw that there were extremely fine silk threads all over this step, intertwined into an invisible net, blocking Yun Ziyuan.

"This is the first prohibition, the Thousand Silk Killing Immortal Array......"

The Thousand Silk Killing Immortal Array is a killing net that condenses the murderous qi of tens of millions of battlefields into silk and weaves it, if Yun Ziyuan does not stop and collides head-on, even if it has declined to this point, it can turn Yun Ziyuan into powder in an instant.

And to crack this Thousand Threads Killing Immortal Array, you need to start from the intersection points of these murderous condensation threads, and think of untying these murderous silk threads like fishing nets. And one thing that has to be noted in this formation is that although each Thousand Silk Killing Immortal Array looks the same, in fact, different monks weave different methods of killing nets, and even in different positions of a killing net, different weaving techniques may be used, and you need to be extremely careful when cracking it.

However, this is not a problem for Yun Ziyuan, he has the guidance of the lone swordsman, and the lone swordsman and his father Yun Xingqiu have been pondering for several years, and this thousand threads of immortal killing array cannot help Yun Ziyuan.

I saw Yun Ziyuan pull out a long burr from the wooden key, treat it as a shuttle, and start needlework, untying the murderous wire net.

This process is not fast, Yun Ziyuan needs to be very careful, if he is not careful, it will be a time of chaos, and Yun Ziyuan will die without a whole body, so Yun Ziyuan can't help but let go of his anxiety and move slowly and leisurely.

After two hours like this, Yun Ziyuan unraveled the murderous wire net without any danger.

Through the murderous wire net, Yun Ziyuan continued to walk down, but at this time, Yun Ziyuan's steps were fast, barely touching the ground, and at the same time, he was still silently chanting in his heart: "Five, four, three, two, one, stop!"

Yun Ziyuan stopped in an instant, stood still, and at this moment, the moment he stopped his body, there were swords falling like rain in front of and behind him, looking at the sharpness of his blade, Yun Ziyuan had no doubt that if he didn't break out in time and didn't stop in time, his body would be instantly cut into pulp by the sword!

"Gengjin Sword Flying Star Array ......"

Yun Ziyuan waved the wooden key in front of him, and saw those swords turn into pure Gengjin qi and return to the wooden key.

"Gengjin has passed, and it has reached the ...... of the Five Elements Prohibition"

After that, Yun Ziyuan continued to descend, and unsurprisingly encountered another nine Five Elements Elemental Forbidden Formation, which were the "Xin Jin Devouring and Killing Array", "Cylene Fire Burning Heaven Array", and "Ding Fire Soul Burning Killing Array...... and so on a series of five-element formations.

"The prohibition of the ten types and five elements is divided into Jiamu, Yimu, Binghuo, Dinghuo, Wutu, Jitu, Gengjin, Xinjin, Nonshui, and Decanate, of which Jiapropane Heptannon is positive, and Ethyl Butylhexanium is negative......"

According to the guidance of the lone swordsman, Yun Ziyuan successfully broke through these five element prohibitions, and at the same time, he was also a little curious to think that these five elements prohibitions were separated according to the negative and positive, and this is a very ancient Five Elements Immortal Method, and the current Five Elements Law is rarely divided in this way.

"The era of dividing the five elements in this way is actually rare in history, and if you want to say that the most famous, it is undoubtedly the era of the Five Elements God Dynasty 20,000 years ago, could it be said that this will be a Daoyan Cave Mansion in the era of the Five Elements God Dynasty......

Although Yun Ziyuan had already learned about the next ban from the Lone Swordsman, he was still looking forward to the scene when he walked to the bottom and saw the core of the prohibition......

The lone swordsman didn't tell him about the relevant background of the cave mansion, in fact, he didn't know, he didn't know about this, there wasn't too much information about the owner left in this cave mansion, and there weren't too many items left, just by the name of these forbidden formations, he was not a scholar who was familiar with the history of 10,000 years of cultivation, so he couldn't draw any conclusions from it, so he couldn't tell Yun Ziyuan about this.