The path leading to the core area of the laboratory is paved with black asphalt, as if pasted on the desert like black tape.
Xu Cheng turns her head and sees a large patch of strange plants growing among the tangled shrubs, motionless in the dim and hazy sunlight.
"I saw these extraterrestrial plants in Italia," Xu Cheng says to Laila, "Maybe this place has also been transformed by aliens."
"They want to turn our home into theirs, and that's something we will never agree to," Laila declares strongly.
They walk for at least 15 minutes before soon seeing a super-giant circular dome structure, completely black, as if a perfect piece of craftsmanship has been overturned onto the earth.
"What's that dome for?" Xu Cheng raises her hand to point.
"The largest 'black wall' in the Western Hemisphere," the soldier hesitates before speaking.
"What is the black wall?" Xu Cheng tilts her head.
"..." The soldier doesn't continue, seemingly to avoid frightening them.
