Earth Dragon Den lake bottom passage
In complete darkness, numerous water grasses glowing with dim green fluorescence floated slowly in the water, resembling noctilucent jellyfish, giving a feeling of being in a different world.
A group of people dressed in diving suits carefully stood in front of the passage entrance, looking down into it.
"Merle, you go down and check," said a person standing at the forefront of the team in a cold voice.
"Yes."
A diver lightly jumped, slowly floating down, and continuously used their hands to steady themselves against the walls of the entrance.
"All detection equipment, follow!"
"Yes, boss!"
A metallic frame about half the height of a person was set up by the group. Soon, a small disc-shaped antenna opened automatically and began to freely rotate 360 degrees. At the same time, the display connected below began to continuously show a string of complex curve data and some computation function graphs that were enlarging and shrinking.
