Yang Kai's only thought at the moment was to sneak into the castle to find out the situation on the first interface, and he couldn't find a better way but to test the mysterious characters in the Silence Space.

"The small problem, very simple, just quietly go and capture a monk and transplant his skin into you. The mysterious figure said lightly.

"What are you kidding by transplanting the skin of the indigenous monk to me?" Yang Kai trembled when he heard this, isn't it cruel to transplant someone else's skin? Besides, breaking into the first interface itself is unreasonable, and it is necessary to carry out a tragic transplantation of the indigenous monk, Yang Kai is a little unbearable, although he is ruthless and decisive, but he is all against the enemy, and it is difficult to start with those who have no grievances.

"Boy, the immortal path is the strength of meat, if you want to go further on the immortal path, you must be ruthless, even if you don't deal with these indigenous monks, they will see you as an enemy, and even know that you are a foreign monk, they will immediately kill you!"

Yang Xingxing's god trembled slightly, he also knew that the immortal path was full of corpses, the immortal path was ruthless, and in the face of the enemy, he must kill it with thunder, Yang Kai had always done the same, however, he had never killed a monk who had nothing to do with him, and the bottom line in his heart was always tightly defended, and now to enter the castle to find out the situation at the first interface, the mysterious man let himself quietly kill a patrol soldier and transplant the other party's skin to his body, he felt cruel when he thought about it.

"Senior, stop, if you want to lure me to kill a monk who has nothing to do with you, Yang Kai can't do it!" There was a little bit of treachery in the mysterious character's tone, since the Nine Spirit Divine Eye was integrated into Yang Kai's body, his spiritual sense and sensing ability had been greatly improved, and he also seemed to feel a little unusual about the silent space, of course, he also had a little different sense of the mysterious character, although the other party only fluctuated a little, it was also captured by Yang Kai.

"Many monks have blended into the major castles, and some have even blended into the big city where the guardian god is located, if you don't take special measures, it will be difficult to find out the situation of the first interface in a short time, if the old man can turn his fingers into gold with a little bit of his fingers in his heyday, let alone change his appearance, but now his strength is not as good as before, if he doesn't take the old man's advice, I'm afraid it will be difficult to sneak into the ancient castle. The mysterious figure spoke in a helpless tone.

Yang Kai was slightly stunned, he had already understood the mind of the mysterious person, he was going to train Yang Kai's ruthlessness, but would Yang Kai really break through the bottom line in his heart? Obviously, this is impossible, if he crosses the bottom line this time, he will trample on this bottom line countless times in the future on the path of immortals, to figure out the situation of the first interface, in addition to this method, Yang Kai can't think of a better way, he quietly launched the space of annihilation.

A patrol team of ten people patrolled along the range of ten thousand miles of the ancient castle, Yang Kai followed closely for three days, countless times he wanted to take the advice of the mysterious person, but he also dispelled this idea countless times, he tried to find other ways to enter the ancient city, and after thinking about it, he couldn't think of a safe way.

It was another evening, and the dark blue sun on the horizon gradually set below the ground, leaving a bright cyan glow at the end of the sky, and the patrol team of ten people had already entered the city, and soon a patrol soldier took their place.

"Whoosh"

Suddenly, a dark cyan figure seemed to shoot from infinity as if an arrow from the sky, Yang Kai didn't have time to react, he was controlled by the shot figure, a majestic coercion was overwhelming, firmly locking Yang Kai's mind, at this moment, Yang Kai had a helplessness, the spiritual power in his body was not under his control, and the Ring of Silence seemed to have lost its effect, and a trace of silver-white light fundamentally dissolved the vast power that poured into his body.

"Who are you?" Yang Kai could still speak, and his spiritual sense had not disappeared, but the other party's speed was much faster than his keen spiritual sense, and his heart fluctuated, and he asked in surprise.

"The cultivation of the fifth layer of Qi refining can actually break into the first interface alone, relying on the spiritual root of the god of the underworld!" The voice was more vicissitudes, indifferent, and calm.

Yang Kai for a while, and immediately judged that people were at least the cultivation of the Yuan Infant Stage, so far, Dugu Feng and Ba Tian saw that he had the Immortal Spirit Root, and they were also the cultivation of the Yuan Infant Stage, a few months ago, the black wind of the Jindan Stage could not see that Yang Kai was carrying the Immortal Divine Spirit Root, and the people who came saw it in an instant, and said in shock: "What do you want?"

"Haha..." Yang Kai laughed loudly with the cyan shadow on his back, and said: "How can I say that I am also a senior master, how can I do anything to the little monk of the fifth layer of Qi refining, but the old man just passed by here, and inadvertently sensed that the little friend was hiding here, which made the old man have a familiar feeling before descending here, otherwise, even if you cultivate for another hundred years, the old man will not stoop down because of the little monk." ”

Yang Kai has seen people who praise people, but he has never seen people who praise him like this, he kept saying that he had bent down and descended, and there was no fluctuation, every word came from the heart, it was difficult to estimate how thick this face was.

"Since the seniors have no ill will towards me, why do you want to restrain the kid?" Yang Kai was a little angry, even under the monstrous power of the Supreme Being, he also maintained his true heart, and the arrogance in his bones could not be blasphemed, and said coldly.

"You have a temper, you have a character, you are neither humble nor arrogant, you are a good material, but it's a pity that you are a monk from the outside world, otherwise the old man can take you as an apprentice. The cyan figure was amazed as he observed Yang Kai.

At this time, Yang Kai also saw the appearance of this cyan figure, his expression was fluttering, his eyes contained essence, his face was thin, his spirit was strong, his cyan beard was neat and clean, his ears were pointed, he looked kind and kind, and it was difficult to connect with the words in his mouth.

"I won't be your apprentice, I'll die of this heart!" Yang Kai resolutely refused, he didn't want to become a disciple of the First Interface Cultivator, otherwise he would definitely be hunted down by the powerhouses of the Immortal Cultivation World after he went out.

"Yo yo, did I say I wanted to accept you as a disciple? Look at how excited you are!" The cyan figure stroked his cyan beard, every word had a hint of ridicule, as if he hadn't chatted with anyone for a long time, and wanted to spit out the words he had meditated for many days.

"Since the seniors have no malicious intentions, please let the juniors go, the kid has something important to do!" Yang Kai's eyes were clear, his trembling mind was also calm, and he said.

"Don't you just want to get the treasure of the first interface? If you want to enter the city for fear of being caught, you want to quit and you are unwilling, and you have no choice but to do it, right?" The cyan figure seems to be able to see through people's hearts.

"Not bad!" Yang Kai's response was only two words, he didn't want to talk deeply with this person who looked like a master in the world and looked like a ruffian when he spoke, it was not that Yang Kai hated the person in front of him, but that this person indiscriminately restrained himself, which made him very angry.

"What's the difficulty of entering the castle, the old man can change your appearance with one finger, and he won't let that round mirror penetrate!" As he spoke, the cyan figure stretched out his index finger and lightly clicked, Yang Kai's face changed instantly, his ears lengthened and pointed, and the power that imprisoned his body dissipated, and the cyan figure didn't know when to leave.

"Senior ・・・・・・"

"Little friend, see you in the future!" There were only six simple words in the void.

Yang Kai never expected such a bizarre thing to happen, although he didn't know this person, Yang Kai felt that the other party was really helping him, and his last words were also very sincere.

The sky gradually darkened, but it did not affect Yang Kai's road, the first interface was always a cyan, even at night, it was also a cyan night, here, there was no night to say, the majestic and mighty ancient castle was like a mountain standing between heaven and earth, at night, the lights were bright, the whole castle was bright, Yang Kai was dressed in green clothes, his ears were pointed, and he walked towards the castle alone.

"Next!" Although it was night, there were unusually many native monks entering the castle, and the soldiers guarding the city were disciplined, and the round mirrors in their hands shone with cyan brilliance, inspecting the many monks entering the city.

In order to be safe, Yang Kai secretly operated the Heavenly Yuan Qi Refining Technique, and the silky silver-white light spread to the limbs and hundreds of remains, sealing the spiritual power in his body, and making all preparations, although the cyan figure guaranteed that nothing would go wrong, Yang Kai did not dare to be careless, because he understood that accidents could happen at any time.

The ancient wood round mirror flickered, and the green light was like a starlight, shining on Yang Kai's transformed body, and after an instant, no accident happened, everything was safe, Yang Kai followed many indigenous monks who entered the city,

This is a very majestic castle, magnificent, thousands of zhang high, all of them are made of bluestone at the first interface, simple atmosphere, pan cyan luster, many soldiers in three steps and a column, five steps in a row, and soldiers who swim back and forth from time to time, each team of soldiers has a simple round mirror in their hands, searching for the monks from the outside world who have mixed in the ancient city, the atmosphere is very tense.

As soon as he entered the city, Yang Kai felt the breath of the monks from the outside world, more than a few people, it was likely to be a few forces, although it was faint, but relying on the magical effect of the Ring of Annihilation, Yang Kai was sure that it was the breath of the monks from the outside world.

Following the many indigenous monks, around a few bends and through a few streets, they came to a vast open space, and at this moment, this place gathered thousands of monks, densely packed, and the original empty place was flooded by the flow of cyan people.

In the center of many people's flows, there is a cyan platform with a diameter of up to 100 zhang, like an eternal pillar of heaven towering into the depths of the clouds, and the cyan ripples circulate in circles, which appear extremely sacred, if this is the dark world, it is really a bit far-fetched, and the bright and clear light has nothing to do with the darkness, but has a little more "immortal" taste.

The dense flow of people gathered, but there was no sound, very quiet, each monk looked solemn, his eyes stared at the platform a hundred feet high, as if he was welcoming the arrival of the immortals, very dignified.

After about half an hour, the blue light converges into a flame that illuminates the night sky, like a bright magic lamp.

Rumble!

Suddenly, as if the loud noise that collapsed the ancient and modern futures shook nine heavens and ten earths, a huge cyan dragon boat traversed the sky, the cyan scales around the body were as big as a fan, and the forest was cold and green, and the huge dragon head raised its head to the sky, as if it was emitting bursts of dragon groans, as if it was about to devour the sky.