A family of three quickly entered this narrow passage, Yun Feiyang nodded, and after the cloud vast hall, he quickly ran towards the passage, fortunately, there was a night pearl inlaid on both sides of the passage every few steps, which made the light in the passage appear quite soft.

This passage is really not short, after walking for a quarter of an hour, and finally came to the end, at the end of which there is a huge circular hall, this hall is at least dozens of times larger than the magnificent hall just now.

The upper part of this huge hall is a dome-shaped dome, and the ground, walls and even the dome of the hall are all carved with runes, these runes take the center point of the hall as the center of the circle, towards the temple hall, and scatter in a radial shape, these runes appear ancient and mysterious, which Yun Feiyang has never seen.

Every rune flashed with a mysterious light, and the light of the entire hall was emanating from these runes, which seemed to be dark and bright, flickering, and extinguished, as if those runes were alive and alive, revealing an indescribable magic and nobility.

Yun Feiyang, Yun Haohan, and Yu Xianxian faced such a mysterious hall, and they couldn't help but feel that their hearts were filled with an inexplicable sense of reverence and indescribable solemnity. In the face of such a solemn hall, even the earth elves and ocean elves maintained their seriousness and respect, and they didn't dare to say a word.

The five of them observed for about ten minutes before they woke up from the shock, and Yun Feiyang asked his parents, "Daddy, do you know these runes?"

Yun Haohan shook his head and said, "We have never seen such an ancient and mysterious, such elegant and smooth rune, and we don't know anything about what it expresses. ”

Yun Feiyang asked, "Daddy, have you ever been to this place?"

Yu Xian said: "Although your father and I have lived in this Gu Immortal Secret Realm for eight years, we have never found that in this secret realm, there is such a wonderful circular hall, I estimate that this circular hall may be the core of the formation in the center of the Gu Immortal Secret Realm." ”

"Formation core?" Yun Feiyang muttered in deep thought.

Yun Haohan said: "My feeling is the same as your mother's feeling, this hall is hidden so deeply, hidden at the bottom of a deep lake, and we have to pass through such a long zigzag lake bottom passage that we finally touched this place." If it weren't for you and your little brother of the Ocean Elves today, we wouldn't have been able to get here. ”

Yu Xianxian agreed: "Yes, your father and I often see the seven-colored light in the lake, so we have swam to the bottom of the lake many times, trying to find the source of the seven-colored light, but we have never been able to find it. It can be seen that the hole at the bottom of the lake is very cleverly hidden, why did we both swim to the bottom of the lake, but we never found this hole?"

Yun Haohan said: "Feiyang, it seems that your brother Ocean Elf is still a step ahead." ”

Yun Feiyang said: "The ocean elf is a water elf, as long as it is in the water, it can display its skills in all directions, and finding such a cave at the bottom of the lake is not a piece of cake for it?"

Yu Xian took his son's hand, patted him lightly on the chest and said, "My son is really a lucky general, the two of us have never been able to find a place, and you will be found as soon as you come today." ”

Yun Haohan also patted his son's shoulder with relief and said, "Xian Xian is right, our son is really a lucky little guy." Maybe it's because he had too many bad things in his childhood, and now he's out of luck. ”

Yu Xian smiled and said, "Look, he actually has such a magical little brother as the Earth Elf and the Ocean Elf." ”

The earth elf said to Yun Haohan and Yu Xianxian quickly: "Uncle and aunt, let me tell you, we are both the prizes won by the master who have passed two levels in a row, but the master does not treat us as servants, but treats us as his little brothers, which makes us feel very honored." ”

At this time, Yun Feiyang was already squatting on the ground, and began to gently caress the runes on the edge of the hall very carefully, and every time he touched a rune, the runes emitted a ray of light.

Yu Xian Xian hurriedly reminded: "Feiyang, be careful, I'm afraid that these runes will be bad for you." ”

Yun Feiyang groped for the runes that he could get in his hand, felt them carefully, and probed, except that they could constantly flash, there was nothing unusual and dangerous, so he walked alone to this hall full of runes, stepping on these runes, and walking towards the center of the hall step by step.

Yun Haohan and Yu Xianxian stayed at the entrance of the hall and did not dare to go forward, they were afraid that there would be too many people and they would touch some prohibition in this hall.

Yun Feiyang cautiously came to the center of the hall, and he saw that in the center of the hall, there were four huge runes, although he didn't know these four huge runes at all, but four words appeared in his mind: Gu Immortal Great Array.

He couldn't help but be secretly surprised in his heart: Why don't I know these runes, how can I know that they are the words "Gu Immortal Great Array"?

Just thinking like this, Yun Feiyang noticed that at the center of this Gu Immortal Great Array, a thick, completely made of gold leaf book appeared, and he respectfully raised his hands and held this golden book up.

Although the eight runes on the cover were also unknown, he knew that the cover read: Gu Immortal Secret Realm Great Array Exploration.

Yun Feiyang said: These words seem to be similar to the words on the colorful light curtain in the center of my flying world, although they are not the same kind of words, but although I have never seen them, I can easily know the content and meaning they express.

However, he always felt that although the words on the golden book were magical, they were far less mysterious and profound than the words on the colorful light curtain of the flying world.

Yun Feiyang carefully opened the first page, looked at it, and he finally understood that the entire Earth, Moon and Star Secret Realm was called the Gu Immortal Secret Realm, and it was one of the three secret realms left by the ancient mortal immortals on the Earth Moon Star. The other two Gu Immortal Secret Realms, one at the bottom of the Earth-Moon Desert and the other at the bottom of the Thousand Ghost Lake.

That immortal left two higher secret realms on the Taiyin Star, one at the bottom of the Taiyin Mountain Range on the Taiyin Star, and the other at the bottom of the Taiyin Ocean on the Taiyin Star.

Yun Feiyang continued to look at the next page, and he realized that this Gu Immortal Secret Realm was specially opened up as a place to recuperate when Gu Immortal and Gu Demon were at war, and he laid out this Gu Immortal Great Array at present, this Gu Immortal Great Array has both attack and defense, and is specially used to deal with the invasion and attack of Gu Demon.

In normal times, the defense system of the entire large array has always been constantly absorbing the aura of heaven and earth naturally, playing a defensive role.

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