Zhuang Zhou dreamed of butterflies, or did butterflies dream of Zhuang Zhou? When Qin Yan traveled to the world of butterflies
After all, who is in the dream, what is illusion, and what is reality?
When you wake up from a dream, when you are melancholy
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This is a story about a ghost who traveled through time, or ghost story for short.
It's probably just a series of ghost stories connected together.