Under his burning gaze, outside the mysterious building in the depths of the cliff, a figure seemed to flash, as if he was chasing something, and disappeared into the building in a blink of an eye.

Fang Di's eyes were full of light, and a black air swirl suddenly escaped from his eyebrows, falling into his hands and turning into a book of undead summoning.

The next moment the page of the book was opened, and the mosquito of calamity flew out of it, and its six wings flapped like a ghostly lightning, flying straight to the bottom of the cliff.

On the page of the book in Fang Di's hand, the perspective of the plague mosquito appeared.

The ice-covered cliffs are rapidly rising and falling back as the mosquitoes fall.

It was unusually cold under the cliff, and it was so strong that it almost froze everything.

This made Fang Di think, even though this place is located on the top of the cliff, the height must be more than five or six thousand meters above sea level, it should be very cold, but the cold air under this cliff is swept away, and the temperature is much lower than the surrounding area, which seems very abnormal.

There is only one possibility that can reasonably explain this phenomenon.

That is, this cliff has only recently cracked, and it has always been buried deep under the mountains and rivers before, and has never been born.

Only the newly cracked cliff, which has been gushing out of the breath of the frozen earth that has accumulated for hundreds of millions of years, may cause a far more than normal cold in front of you, containing a freezing cold.

Fang Di whispered, "So at midnight a few days ago, the violent earthquake that shook the earth and the mountains was probably caused by the cracking of this cliff wall. And what is it that makes this cliff crack?"

The cliff was unfathomable, and at the speed of the plague mosquito, it still fell for a while before it came to the light under the cliff.

Fang Di's eyes widened, staring closely at the picture reflected in the Book of the Dead.

There is indeed an ancient building under the cliff, and some of it protrudes beyond the cliff.

The light Fang saw from the top of the mountain emanated from a transparent crystal-like object with a peculiar shape hanging in front of the building, like a full moon.

It shone through a range of thousands of feet, and from a distance, it looked like a real bright moon hanging there.

If this moon-like luminous object is man-made, then the fact that it can still emit immeasurable light just by the fact that it has survived for an unknown number of years, we can know that the technology displayed in it has surpassed the modern age where Fang Di was born, and he is even more interested in the buildings on the cliff below.

The undead plague mosquito hovered and moved slowly, staring at the building from the perspective of the plague mosquito.

It has a strange shape, like an inverted triangle, but it is not so obvious, and it is wide above, like a square, jutting out beyond the cliff. In front of the square stands a huge pillar, on which it has not been extinguished for thousands of years, and is always burning and shining, like a bright moon.

The rest of the whole building, deep in the cliff, can not be seen at all, let alone how big it is, but only the part that leaks out is more than 50 zhang high and wide, the whole body is blue-black, it looks very depressing.

Fang Di sent out a thought, and the undead plague mosquito immediately approached the building on the cliff.

The surrounding area of the building was quiet, without a trace of movement, and the figure that Fang Di had seen looking down from a high point had long since disappeared.

As the plague mosquitoes approached, Fang Di saw a portal at the level of the building and the cliff.

The door was two feet high, blue-black throughout, and looked like some kind of metal that had never been seen before, and the light was cold.

On top of that, the door had opened a gap that could only accommodate people. This seems to indicate that someone has opened the door and entered the inside of the mysterious building.

When Fang Di urged the undead mosquito to continue deeper into the building, the plague mosquito actually transmitted a hazy and hazy fear thought.

The undead species certainly have no obvious emotions, but there is a mental fluctuation that comes from instinct.

It's in fear.

Fang Di groaned slightly, and the Book of the Dead in his hand instantly turned into a wisp of black qi and disappeared, and the plague mosquitoes below were also sent back to the underworld at the same time.

Suddenly, Fang Di felt it, looked up, and there was a black dot hovering in the sky.

It was the giant eagle domesticated in the sacrificial courtyard, which once again showed its traces.

Fang Di frowned, exhaled lightly, withdrew his gaze, glanced down again, and suddenly jumped out, falling into this abyss-like cliff.

In the process of descending, Fang Di's old trick was repeated, and he used his power to churn on the cliff wall like electricity, reducing the momentum of falling, which seemed to be extremely exciting and thrilling.

His movements are refined and beautiful, but they show an endless sense of fluidity. At this time, if there are onlookers, they must be amazed by the calmness and calmness shown by Fang Di during his descent, and even when he stretched out his hand to borrow strength on the cliff wall, he was amazed and amazed by his grasp of strength and angle.

He descended in this way, naturally very fast, almost in a straight line.

After about a hundred breaths, the cliff building below became closer and closer in front of Fang Di's eyes, rapidly enlarged.

He silently released his spiritual power, and his feet slowed down as if they were being lifted by an invisible cloud. Finally, he turned over in the air, dissolved the momentum of the descent, and landed silently on the square in front of the palace that poked out from the cliff.

In the cliff at this depth, it is really extremely cold, and the cold is overflowing, if ordinary people come down, I am afraid that it will not take long to freeze to death.

Fang Di turned his head to look around, and all of them were quiet, and there was no obvious danger.

He was not in a hurry to go deep into the palace, but crouched down and touched the ground with his hands.

The texture of the ground was strange, not very cold and hard, and Fang Di had already felt abnormal when he landed before. After he looked closely, he was even more surprised, this ground did not look like the stone he imagined, and it was not gold or wood, it was really strange.

It's a material you've never seen before.

He got up and walked in the direction of the portal where he could go deep into the building.

When you come to the door, you can see the traces of the opening on the door, which seems to have been left for a short time. If Fang Di was not wrong on the cliff wall before, it should be that fleeting figure who opened the door and entered the building.

This is strange, under such a deep mountain cliff, there are still people who are one step ahead of Fang Di and enter this mysterious building where I don't know what it is.

Fang Di silently dodged into the back of the door.

It wasn't dark inside, there was a hazy halo spreading, like a bright moon hanging in the sky.

The place where Fang Di came in was a rectangular hall, which was carved with the help of the mountain, with a height and width of about ten zhang, which was clear at a glance and empty.

At this moment, the afterglow at the end of Fang Di's eyes faintly glanced at the end of a dark and deep passage opposite the hall, as if a figure had flashed away.

Fang Di silently tiptoed and floated forward, following towards the passage opposite the hall.

The passage was very cold, a few feet wide, and the light became dark.

Fang Di sensed that someone was hurrying away in front of him, and he quietly followed him, going deeper into this mysterious mountainside palace along the way.

It is like a labyrinth, interspersed with countless temples and passages, but it is always silent, like a place of death.

From the dust deposited on the ground, a footprint could be seen, a small and light human footprint, as if a woman had penetrated into this mysterious palace building before Fang Di.

Fang Di gradually became alert as he walked forward.

For some reason, he had a bad feeling in his heart, and he vaguely felt an inexplicable danger, which weighed heavily on his heart as he went deeper into this building.

Suddenly, darkness fell before his eyes, and after passing through another passage, he entered an empty and absolutely dark space.

As soon as Fang Difu entered this space, black qi filled his body, as if he had melted into the darkness in the space, and he stood there motionless for a while, without moving for a while. He sensed that there was something mysterious in the space, so he was alert.

The darkness in the space is also very strange, and with Fang Di's eyesight, he can't see through more than ten zhang away.

He restrained his breath and began to move slowly in the space like a ghostly voice.

The width of this space should be at least a hundred zhang away, and Fang Di should move against one side of the wall, always maintaining a high degree of vigilance. Soon, he accidentally found mysterious murals on the walls.

There are many strange things depicted on the mural.

The most depicted is the scene of the vast starry sky, showing the brilliance of the starry sky with bright spots, and stretching a continuous long line between the stars, which looks like crossing the void, I don't know what it means.

Under one of the murals was an engraved text that caught Fang Di's attention, and the handwriting was exactly the same as an ancient script he had seen in the temple of scriptures in the sacrificial courtyard.

"In the Fourth Solar Age, we have finally found the door of mythology left by the gods・・・・・・・ we will pass through the infinite starry sky and finally reach the realm of the gods, in search of eternal life・・・・・・・"

The words are mutilated and incomplete, but the meaning of the expression in just a few sentences is intriguing.

In modern times, there is a saying that the current human race is the human race of the fifth or sixth solar age, and before that, there were at least four more highly developed intelligent races that existed on the earth, but all of them were destroyed in an irresistible catastrophe.

There are many legends about it.

At this time, the words "Fourth Solar Age" are clearly marked on this handwriting!

Obviously, this is supposed to be a prehistoric ruin, surviving for an unimaginably long time.

The content of the handwriting made Fang Di's mind flutter, the gate of mythology left by the gods・・・・・・ the divine domain in the starry sky・・・・・・・ he felt that this mysterious relic building seemed to contain a great secret.

Fang Di continued to move, and found a stone tablet that was more than a foot larger than a foot under a wall, and the handwriting on it was reappeared.

At the same time, Fang Di also heard a very slight sound in the center of the space, as if something was deep in the earth under this building, rapidly approaching the ground in the main hall here.

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