[Supernatural suspense + folklore exploration + heroine's growth + tender redemption]
The creaking old tram, carrying folklore intern Xia Zhi, stopped at the Yong'an Family Home in the old town of Qingchuan...
In the old building, there was the sound of a string of marbles hitting the cement floor.
Drawn by curiosity, Xia Zhi is dragged into the dusty past of the old building by the sound of marbles every night, uncovering the old textile factory case behind the obsession of the spirit body...
When Xia Zhi found a yellowed account book in the shadow of the old building and narrowly escaped death and came across the truth, she discovered that everything was very different from what she thought...
The sound of the old building turned out not to be the echo of fear, but...
"It's late at night, my friend, come and sit in the old building. There are paulownia flowers here, and listen to me tell you about the obsession of the spirit body..."