With the help of the brilliant glow emitted by the Golden Rainbow Sword, Yin Tiancheng walked forward along the tunnel, without any movement along the way.

But when he came to the end of the passage, Yin Tiancheng couldn't laugh or cry, and he found that there were two stone doors blocking his way.

Unexpectedly, there were obstacles in it, which made Yin Tiancheng a little hesitant, was there a mysterious cave behind the door that hid many secrets, or did he fall into a dangerous illusion in an instant as soon as he pushed the door in?

At this moment, Yin Tiancheng was a little excited and couldn't help himself, but he finally made up his mind, even if it was a mirage's lair inside, he would go in and have a glimpse of the movement.

So he carried the sword with his backhand and pushed the stone gate with one hand, but found that it couldn't push a single inch like an iron cast, even if he used the strength of milk, it still had no effect.

Yin Tiancheng suddenly remembered what happened in the deep cave of the blood pool in Murong Mansion, and now he was almost in the same situation as at that time, which made him a little angry and determined to destroy the stone gate that was blocking the way.

Yin Tiancheng hurriedly destroyed the golden rainbow sword in his hand, and a dazzling sword suddenly appeared, aiming at the stone gate in front of him and striking hard.

"Boom!" The sword slashed at the stone door in an instant, and it rumbled, but after everything fell silent, the stone gate was safe and sound, and there was not even a trace of crack on the door.

Yin Tiancheng was stunned, and then swung a few sword rays in a row as if he didn't believe in evil, but the result was still as silent as a mud cow entering the sea.

The Golden Rainbow Sword, a divine weapon, could not destroy two ordinary stone gates, which was a little surprising.

Yin Tiancheng was about to swing his sword and strike again, but suddenly changed his mind, because at this moment he saw a few lines of cyan runes appearing on the door.

Although these runes were fleeting, they were enough for Yin Tiancheng to perceive the mystery of the stone gate.

The reason why these two stone doors are unbreakable is that the mirage has set up a protective shield similar to an enchantment, which protects the stone doors from any damage.

Prior to this, Yin Tiancheng had seen the records of relevant spells in a cultivation secret book in the Transmission Hall, and once the enchantment of this special nature was successfully set up, it would be connected with the mountains and rivers where it was located, and they shared weal and woe.

Unless you can destroy the entire Ganzao Mountain, this special barrier will last forever and will not disappear.

This solid stone gate made Yin Tiancheng feel a deep sense of frustration, but he didn't want to leave in despair, so he had to look up and down, hoping to find a way to crack it.

He knew in his heart that the demon had also entered the spiritual bed through this place, which meant that there must be a hidden method of opening the door that he did not yet know.

The hard work paid off, and after the time of a pillar of incense passed, Yin Tiancheng really showed a clue.

He found that the rock wall on the right side of the stone gate was shining with a little bit of faint green light, it was so faint that it was completely hidden in the glow of the golden rainbow sword in his hand, and it was difficult to be found if he didn't look closely.

Yin Tiancheng walked along the green light and found that this glimmer of light was revealed from a freshly cracked crack in the rock wall, and he was about to squint his eyes to see it clearly, when this glimmer suddenly went out.

Yin Tiancheng was a little disappointed for a moment, but he immediately guessed the reason, so he waved the Golden Rainbow Sword lightly and aimed at the stone gate and swung a tentative sword ray.

Sure enough, when the cyan rune was faintly displayed on the door, this faint green light was transmitted again.

This time, Yin Tiancheng took a real look, and he found that there was an object hidden behind the rock wall that could not be identified for the time being, and the green light was emitted through it.

He knew that there must be some unknown connection between this hidden thing and the stone gate, so he quickly gathered his vitality in the palm of his hand and cast it in the form of a golden spell, and he wanted to forcibly erase the outer layer of the stone wall that covered the green light.

As the gravel and stone chips fell down, a groove gradually appeared, and Yin Tiancheng saw that there was an artificially made disc-shaped object inside.

And just when Yin Tiancheng waved his right hand to continue to clean up, he felt that his fingers seemed to touch a slightly raised object, and he couldn't help but be stunned, and then he heard a "bang", and the disc-shaped object in the groove suddenly popped out.

Yin Tiancheng was taken aback, and hurriedly moved his steps straight back, in case something like a hidden weapon shot out and hurt himself.

But he proved to be too cautious, and in the groove was nothing more than a cylindrical stone cylinder slightly larger than the palm of an adult's hand, which emitted a faint green glow around it.

Yin Tiancheng almost laughed out loud, realizing that this stone tube was the mechanism that opened the stone gate, otherwise how could the demon be able to enter and leave this place freely!

He hurriedly examined the stone cylinder carefully, and found that there was nothing special about it except for the eight quaint stone characters carved on the circular surface.

If there is no error in judgment, these carved ancient characters are likely to be the key factor in opening the stone door.

Fortunately, Yin Tiancheng knew those words, and after he silently read these words in his heart, he found that they were very familiar, as if he had seen them somewhere before.

Thinking about it carefully, Yin Tiancheng couldn't help but cry out in surprise, the eight words on the stone tube were actually related to the ancient book that the demon gave him!

Although the ancient book was stolen by Huang Dalei, Yin Tiancheng had already realized that these words were the eight words that Nangong Yan had said and were missing because the pages of the ancient book were damaged!

At that time, everyone, including Yin Tiancheng, regarded it as an ancient book that recorded the cultivation of the mind, and everyone could find the corresponding words of the missing eight characters from other cultivation books, so no one would have thought that there were hidden secrets hidden in them.

It was only at this time that Yin Tiancheng understood the good intentions of the Turtle Demon, the ancient book he handed over to him had nothing to do with cultivation, but hidden information related to the Mirage Demon Sun Wangye.

As a demon, he couldn't have the ability to resist Sun Wangye, so the demon pinned his hopes on others.

After the Deadwood Daoist was murdered, he kept secretly looking for a suitable candidate, and finally chose Yin Tiancheng, because he believed that this young man would definitely be able to get rid of the murderous Sun Wang Ye and avenge their brother.

Yin Tiancheng couldn't help but burst into tears, realizing that he must not live up to the expectations of the Turtle Demon, otherwise that hateful Mirage Demon would kill more cultivators!

When he was studying the eight ancient characters on the stone cylinder, Yin Tiancheng's hand inadvertently touched one of the characters, and then he was surprised to find that these characters were not fixed on the stone cylinder as he thought, but could move freely.

Yin Tiancheng was ecstatic, he instantly understood that if he could arrange these stone characters in the correct position on the surface of the stone cylinder, the closed stone door would definitely be opened by him.

So he wanted to find out the order of these eight words, Yin Tiancheng had long known that they were six different words, because two of them were repeated, namely Wei and Zai.

According to this phenomenon, Yin Tiancheng effortlessly arranged the order before and after, and when these words were combined, it turned out to be a complete sentence: majestic Kunlun, magnificent and beautiful!

This couldn't help but surprise Yin Tiancheng, Sun Wangye was a ferocious old monster, why did the door opening mechanism he set up have something to do with the holy land of the gods, Kunlun Divine Mountain? And the meaning revealed in the sentence was obviously praising this sacred mountain, and the abnormal phenomenon did not conform to his identity and cruel character.

Although he was shocked in his heart, Yin Tiancheng didn't bother with it too much, since the order of the stone characters had been arranged, as long as he started with the word Wei and ended with the word ya, he could open the stone door as long as he started with the word wei and ended with the word ya, and moved them to the correct position on the surface of the stone tube.

This is somewhat similar to the principle of the nine-square grid, except that the nine-square grid has drawn squares for people to choose from, but there is no position indication on the surface of the stone cylinder.

However, this is not difficult for Yin Tiancheng, the nine-square grid originated from the Hetu Luoshu, and then Fu Xi evolved into gossip according to this, so this open-door mechanism must hide the principle of gossip.

The surface of the stone cylinder is just one word less than the nine-square grid, which undoubtedly implies that the eight ancient characters represent the direction of the eight trigrams.

Yin Tiancheng hurriedly moved the first Wei character to the earthquake position, that is, the position of due east, and then moved the other seven characters to the corresponding direction in order.

After doing all this, Yin Tiancheng stood aside and waited for the stone door to open automatically before going in to take a peek.

But the reality disappointed him, Yin Tiancheng waited for a long time, and he didn't see any movement, which showed that he was in the wrong order.

Yin Tiancheng was a little disappointed, but he immediately opened his mind, and scolded in his heart: "Alas, I would actually make such a low-level mistake!"

Now people arrange the direction to the east to respect, but according to the principle of gossip, the direction should be the north to the south, the right west and the left east, to the south for the respect, Yin Tiancheng just now The order of arrangement is from the east, how can it be good!

After thinking about it, Yin Tiancheng took a deep breath and rearranged the direction of the stone characters, this time, he moved the Wei character to the position of the south, and when his hand left the word, a wonderful phenomenon happened, this Wei character turned into a departure word representing the south!

At this moment, Yin Tiancheng's confidence doubled, and he hurriedly moved the second Weizi to the southwest position, and sure enough, as he expected, it became Kunzi!

Yin Tiancheng continued to arrange according to his excitement, and after all the stone characters were moved, they also correspondingly became the eight gossip fonts representing the direction: Li, Kun, Dui, Qian, Kan, Gen, Zhen, and Xun.

But the stone gate still didn't move, but Yin Tiancheng no longer had doubts, after all, there were only eight stone characters, and the direction of the middle palace was still vacant after the arrangement was completed.

Yin Tiancheng moved his arm, and then pressed his index finger to the center of the stone tube.

Sure enough, as he wished, as soon as his index finger pressed to this position, the stone cylinder slowly rotated, and only stopped after nine consecutive turns.

Then, with a "bang", Yin Tiancheng saw the stone door retreating to both sides, and the light inside was shining, as if indicating that there was a mysterious world behind the door.

Yin Tiancheng couldn't help but get nervous, he didn't rush in, but waited with the golden rainbow sword in his hand, for fear that it was a mirage's lair inside, and this vicious old demon would pounce out at any time to launch a surprise attack on him.

But this situation didn't happen after all, so Yin Tiancheng relieved himself and walked in with his sword on his chest.