Return to Tiandu, and then go out. Everyone is already on the earth.
In addition, they can return to Tiandu at any time - the empty world is not difficult to find, but the difficult thing is "coordinates". Now that the ancient style has gone, with coordinates, they can certainly return at any time.
"Technology here?"
Ding Gehei observed Tiandu, and found that half can understand, half can't understand: from a scientific and technological point of view, the spiritual Tiandu is really not good, at least in the eyes of scientists at the level of Ding Gehei, it is nothing.
You know, Carl can explain the existence of ghosts.
Although the technology of the supernatural universe is partial, it is absolutely not weak