After customs clearance 1 came to the Ghost Dragon Cave next to Road 2 14 and entered the deepest place. Remember that it's usually easy to get there without looking back (that is, go straight ahead, regardless of a few rooms).
I came to the reverse world, where I found Bai Jinyu, a special prop of Ghost Dragon.
Ghost dragons will become a reverse form in the world after being kidnapped, and their racial values and characteristics will change.