The most important thing is that they found out that the fog outside the ancestral mountain is specifically for the Yilong clan, and other cultivators will not be affected, but they will only lose their way, but they can still enter and exit safely, so the elder of the Holy City helped Kill Mountain to build another trapped formation outside the fog, which is that forest.

This mist trapped the Yilong clan, that forest could trap other cultivators, and from that day on, the ancestral mountain really became an isolated place, and the few remaining Yilong people lived here.

Gu Yue listened to him tell him about the history of the Yilong clan while following him, and in a blink of an eye, the two seemed to have walked to the other end of this space, and a dark hole appeared in front of Gu Yue.

"What is this?" Gu Yue asked as she looked at the hole and felt a little strange.

Looking at the entrance of the cave in front of him, he said to Gu Yue with a solemn expression: "This is the second way out that the other Yilong clan found when they returned here, leading to a cave in the back mountain, when the weakest hole here was penetrated by them. ”

Gu Yue felt very novel, this place looked like an independent space hidden in the mountain, but he didn't expect that after penetrating this layer of space, what appeared was not a spatial turbulence, but another rock that became a solid, just like a mirror, this side is a layer of space, but the back is a rock, such a strange situation Gu Yue has never heard of.

Gu Yue, who couldn't help but be curious, opened his legs and was about to approach to take a closer look at the hole that had been pierced, but the opponent on the side suddenly grabbed his arm and exclaimed: "Be careful!"

Gu Yue was a little surprised, he hadn't seen such a nervous time for so long, and asked a little puzzled: "What's the matter?" I was just curious and wanted to take a closer look at the traces of this penetration. ”

He shook his head and said to Gu Yue: "It's very dangerous here, don't rush forward, you first slowly approach and take a look inside this cave." ”

Gu Yue didn't know why he leaned forward slowly, this time he was concentrating on the situation behind the cave entrance, and after seeing the situation inside, an extreme chill rose up in Gu Yue's waist and went straight to the top of his head along his back, and his body trembled and exclaimed: "Hiss...... What is this!!"

What a terrifying scene it was, behind the hole in front of Gu Yue was the middle of a cliff, and the outside was like a well was a vertical circular space, and the light reflected on it flickered and darkened, and Gu Yue didn't know what was under this huge well.

It's not that Gu Yue can't see the ground below, but because it's filled, and looking at the white forest, under the light and shadow at the top, it is sometimes dark and sometimes reflective, as if there are countless black shadows moving on it.

The things that filled the entire cave below were bones, and they were all skulls, Gu Yue knew at a cursory glance that there were millions of skulls below, and each of them had huge mouths, and the teeth on them were still shining with cold light, as if they were roaring in various directions.

"This is the curse that my Yilong clan has not been able to get rid of for thousands of years. He looked at the entrance of the cave in a low voice and said to Gu Yue.

Gu Yue looked at the reversal, and then looked at the scene in the cave, as if he understood a little.

It's true that all of them are the skulls of the dragon dragons, the iconic dragon head Gu Yue recognized at a glance, there are millions of skulls of the dragon dragons below, and there seem to be black shadows walking on the skulls of those white sensen under the swaying light and shadow, such a shocking scene is really more terrifying than hell.

"What the hell is going on?" Gu Yue hurriedly asked the opposite, he was really shocked by the facts in front of him, and at the same time aroused Gu Yue's strong curiosity.

It turned out that the Yilong clan was divided into two factions, one faction stayed on the ancestral mountain and stationed down, but the number was very small. The other faction was outnumbered, and all of them returned to the mountain space to try to find an exit again.

After all these people searched, they found a place, which is the current cave entrance, there was no cave entrance here, but a dragon artist found that the space here was the weakest, so he persuaded a few friends to work together to break through this space.

After a few more people broke through the hole to form this hole, something unexpected happened, and the few people who pierced through the hole were instantly dragged into the cave by a suction force, and in a moment of effort, only a white skull fell into the abyss below.

These people seemed to have turned on a switch, and a domineering suction force came out from the entrance of the cave, and all the Yilong people in this space, no matter how strong they were, were all pulled into the abyss by the huge suction force.

At that time, under the surprise of the people, many Yilong people were swallowed up by this hole, and it was not until the masters all reacted and worked together to fight against this powerful force that the situation was stabilized.

Later, the dragon people left above were also alarmed, and all the masters at that time worked together, and after losing most of the clansmen, they finally prevented the cave from continuing to devour them.

At that time, they didn't have time to study why this cave was like this, but they only used the largest killing array of the Yilong clan, and more than 900 black-level Yilong people set up a Wanlong strangulation array to completely resist the suction of this hole.

But a new problem has also ushered in again, although these black-level dragon artists have succeeded, the formation must continue to operate, otherwise removing the formation hole will devour their clansmen again, and it will consume a lot of energy to maintain the operation of this formation.

If these black-level dragon artists maintain the formation for a long time, they will run out of energy and die in a few years, and then the formation will collapse, and the loss of more than 900 black-level dragon dragons in a few years is a huge loss, and the only remaining people of the dragon clan are not enough at all.

Later, everyone came up with a way, everyone retreated to the mountain outside, leaving only the killing array composed of more than 900 people and some serving disciples, and all the resources in the entire space were used by these 900 people.

But this still couldn't solve the problem, at that time, someone stood up, and he was willing to sacrifice his life to turn into a killing array to provide energy supply for this killing array, so that the more than 900 people only need to maintain a small part of the energy output.

In this way, this killing array has been maintained at the cost of consuming the life of a red-level dragon person every year, preventing the destruction of the dragon clan by this cave entrance.

But everything is limited, even if the Yilong clan is so powerful, it can't afford to lose a red-level master every year, and the number of the Yilong clan has slowly decreased over thousands of years, although it is slow but it is still an irreversible fact.