It's a very wide underground space. It is half the size of a football field, and the dome is about three meters above the ground. The space was empty, except for yellow sand and yellow sand.

"Is the sand below the main island empty?" Gao Zhen said stunned.

"I've never heard anything like that, but those spurts should have been here." Yi Shuihan pulled the high pillow aside and pointed to a mark on the ground. It was three serpentine twisted sand marks, clearly from the three large tails behind the sand spur rat as it ran.

"Why is there a circular hole on our side?" Gao Zhen was more interested in the pit they fell into, because it was so regular, it didn't look like it was naturally formed, but artificially carved.

"Not just that, there are nine." Lai Ruoxue was lying on the ground, she was facing the sky on her back, stretched out her finger and tapped it nine times in the air, counting as she went.

"Nine?" Gao Zhen and Yi Shuihan raised their heads together, this time they carefully identified it in the direction of Lai Ruoxue's finger, and sure enough, there were eight other black circles on the black dome. It's just that they're all blocked now.

"Why don't you get them all done?" Yi Shuihan proposed.

Gao Zhen nodded, and with him, he took the flying sword and poked at the other eight round pits. To their astonishment, the other eight round pits were sealed very tightly. It was as if the sand had been welded to death, and it took a few attacks in a row to produce a little movement. It can be seen that the palm slapped by the divine ape just now weighed, and Lai Ruoxue, who was cushioned at the bottom, was also the most seriously injured because of this.

Fortunately, her cultivation is the highest among the three, Yi Shuihan found some elixir to feed her, although she couldn't cast spells for a while, but her physical condition was improving.

A dull sound sounded, and the sand and gravel above his head fell, this space was not high, and after these falling sand and gravel were piled up on the sand pile, there was no movement.

A total of nine circular openings appeared on the dome, and sunlight poured down from above, penetrating into the underground space through the nine openings, fading the original darkness of the place a lot.

The nine holes are arranged in an extremely strange way, but they are all of the same size. They are arranged in three concentric rings, each with three openings. And if you draw a line outward from the center of the ring, no two openings are on the same line. In other words, if these openings lead to the center, they cannot be blocked by another opening.

After looking at it carefully for a while, Gao Zhen suddenly remembered where he had seen such a pattern. It was the cover of a book in the stone table, and this pattern of nine circles was called the "Nine Star Chart".

The so-called "nine stars" is the collective name for the nine main stars in the sky in the astrology of the fairy world. The nine main stars are: Celestial Canopy, Celestial Rui, Celestial Opposition, Celestial Auxiliary, Celestial Bird, Celestial Heart, Celestial Pillar, Celestial Ren, and Celestial Ying. These nine stars are often mentioned in the scriptures, such as "The nine stars are unchanged, and time and space are immortal." These nine stars symbolize the source of all spiritual power on the Immortal Continent, and they are the "Ancestor of a Thousand Immortals, the Sect of Ten Thousand Spirits".

This "nine-star chart" depicts the arrangement of these nine cardinal stars.

"It's strange that there is such a pattern on the main island of the Southern Islands. Doesn't it mean that there are no people here? Is it the trace left by the ancient immortal cultivators when they drove the immortal beasts here? Yi Shuihan also saw this "nine-star map", and he was puzzled.

Lai Ruoxue was lying right under the main star hole they had fallen from, and at this time the sun was overhead, and the sun was shining down on her face. She felt warm.

Seeing this scene, Gao Zhen's heart touched and hurriedly looked around. Sure enough, it was noon, the sun was shining in the sky, and the sun was shining down from above the nine-star map, and the light cast from every hole was straight.

"I feel like we need to get all the sand out here, and I feel like there's something underneath the sand." Gao Zhen said, Yi Shuihan and Lai Ruoxue glanced at each other, and they nodded. Yi Shuihan stepped forward and helped Lai Ruoxue to the wall to lean on.

Soon, the Nirvana Shield and Lai Ruoxue's Treasure Bag became tools for carrying sand. The two immortal cultivators with minor injuries took their tools and began to carry the sand and soil out of the cave little by little. They have fairy swords, and it is not a problem to go up and down in the underground space.

On the ground, the divine ape had disappeared, and the other immortal cultivators had fainted to the ground, they had not suffered any serious trauma, but their brains were shocked by sound waves and their eardrums were bleeding, and they should recover in a while. Gao Zhen and Yi Shuihan didn't pay attention to them, but just roughly piled up the sand and soil that had been transported out next to the sand.

Finally, before the sun could move away, they had almost cleared the sand from the underground space.

Back below, they found something hidden beneath the sand. It was a huge round bronze plate, carved with ancient lines, depicting the silhouettes of some fairy beasts or exotic beasts. The carvings of these fairy beasts and alien beasts surround nine smooth circles, and these circles face the nine circular openings in the dome.

In other words, there is a nine-star chart on the dome, and the bronze disc on the ground is also a nine-star map.

The sunlight shone through the hole in the dome, straight into the circle on the bronze disc. There was nothing carved in these nine circles, and they were smooth, like nine round bronze mirrors. The sunlight also reflected the carvings of those fairy beasts and strange beasts, and they seemed to come to life, dancing around the nine-star chart.

The nine-star map on the bronze disc on the ground was illuminated.

Suddenly, the earth trembled, and the massive bronze disc shook. Gao Zhen and Yi Shuihan didn't stand firm for a while, and fell to the ground one after another. They pulled out their fairy swords, blocked them in front of their chests, and made defensive movements, thinking that the Tianyin Divine Ape had returned.

As a result, the underground space became extremely dark for a moment, and the nine holes in the dome suddenly closed at some point, and nine small bronze discs blocked them. There was no longer a glimmer of light in the underground space.

"Click!" With a crisp sound, a small gap was suddenly revealed in the center of the nine-star map on the dome, but the gap was only as big as the mouth of the bowl, and it was impossible to get out. A ray of sunlight shone right through the gap and fell straight to the center of the bronze disc on the ground. That location is the center of the nine-star map on the ground.

The light dimmed, and the carvings of those fairy beasts and strange beasts flickered in the thin sunlight, reflecting on the walls around the underground space, forming shadows with teeth and claws, very weird, and slightly terrifying. Lai Ruoxue couldn't help but clench her fists.

There was a buzzing sound, and the center of the bronze disc on the ground actually slowly rose, and it was a small cylindrical platform. When the platform was halfway up, there was a soft bang, and then it stopped moving. Once again, the entire underground space was calm, but much darker.

"It's the Mo family's trick!" Gao Zhen exclaimed.

Such an ingenious and delicate mechanism can only be made by the Mo family. Whether it is the altar used for sacrifice in Canglang Palace, or the mechanism used by Xinghai Pavilion to test newcomers, they are all inseparable from the Mo family. The shadow of the Mo family's tricks is everywhere in the fairy world. There is also a sophisticated Mojia mechanism buried in this underground space, which can be triggered just by using the sunlight shining down from the sun.

"Oops, those holes are closed, we can't get out." Yi Shuihan's focus is different from Gao Zhen's, he is more realistic.

"No," Lai Ruoxue shook her head weakly and pointed to the walls around her, "a new hole has appeared. ”

Everyone looked at the surrounding walls in unison. There was a polygonal wall made of bronze with nine sides, surrounded by a bronze disc. They had checked it before, and there was nothing else on the bronze wall except for some carvings of fairy beasts and strange beasts.

However, after the mechanism is triggered, a semicircular arch appears on each wall.

There are a total of nine arches, enclosed in a circle, and the inside is black and hollow, and it is not clear to see.