There are only these two possibilities. Otherwise, who has nothing to do, so what is the purpose of digging a tunnel one thousand meters underground in the illusory space?
Underground tour and sightseeing.
Haha, I feel so bored just thinking about it.
But now, no matter how powerful Su Yin is, the three of them are more or less injured. Although Su Yin and Renault did not suffer any skin injuries, they have injured their muscles, bones and internal organs, and they still need to be recuperated before they can recover.
However, it is simply impossible to go up from a thousand meters underground.
Just now, Su Yin took a look around and saw that the two ends where they fell were all covered with smooth moss.
So they only have one way, which is to go into the tunnel.
"Have you made up your mind?"
"The only way is to move forward, are you afraid?"
"I'm already like this, and I'm still so scared!"
Su Yin, Renault, and Han Lei took a deep breath and walked into the dark tunnel.
The tunnel is very long and narrow, with only one meter wide on the left and right.
But under the illumination of the night pearl, the murals at both ends of the tunnel are lifelike.
"What era are these paintings from?"
Su Yin stretched out his hand and touched the paint on the mural. It seems that it has been around for a while. "
"At least a thousand years."
Han Lei also touched the paint on the mural, which had been fused with the rocks, plus the clothes of these people.
Based on the documents he saw in the library, these paintings probably depict people from a thousand years ago.
"Could it be that the students from the Demonic Cultivation Academy left behind when they came to the illusory space to practice?"
Not impossible.
The three of them walked in the narrow tunnel for two hours, and finally saw another light in the dark tunnel.
The light had a faint holy light, and the three people's eyes were filled with joy as they walked towards that light.
Finally, when the light was at its peak, the three of them turned from expectations to disappointment.
This is just a crystal cave.
"So many crystals?"
"This seems to be a magic crystal."
"It's really a magic crystal."
Su Yin looked at the crystal cave in front of him, a whole cave full of magic crystals.
It’s like not asking for money.
Moreover, this kind of magic crystal is not the same as the kind of magic crystal that Professor Bai gave her.
"I'll go! This is the purest magic crystal. I never imagined that it would appear in a place like this."
Speaking to Han Lei, he had read many books about various energies during this period of time.
Among them are books about magic crystal mines.
The purest magic crystal is transparent, has no impurities, and is hexagonal. Looking at the large hexagonal magic crystal in front of him, Han Lei was stunned.
"It's really a magic crystal, the purest kind of magic crystal."
Su Yin followed Han Lei's gaze and saw that he couldn't feel any power outside just now, but when the three of them stepped into the magic crystal cave.
That powerful force swept over the sky and overwhelmingly.
What kind of energy is this...
It's like the pure power gathered between heaven and earth is coming in a steady stream.
An unspeakably powerful energy continuously gushes out.