Deep in Yongchongfang, Chang'an, there is a "Guining Tea House". The back door of the tea shop faces the ghost market, and there is a half-broken monument standing at the entrance of the alley, with the inscription "A place to watch the world" engraved on it. The proprietress Hui Niangzi was once the female historian of the Taishi Bureau, but she was removed from the job because she could see the afterimage of the deceased when she "awoke" in the middle of the night. She no longer asked about fate, but only listened to the streets and recorded cases in the tea shop. Using a Tang poem as a prophecy, she recorded the mysterious and murderous cases in the dark night of Chang'an.
Every midnight, the ruined monument becomes cold, and the resentment turns into the sound of poetry. Lady Hui does not exorcise evil spirits or interpret dreams, she only observes and records. She spelled out cause and effect in three sentences and sealed the truth in a volume of notes. Those who are entangled by the poems and prophecies may die under the hibiscus moon, or be caught in the autumn frost reflected in the mirror, or drowned in the sound of pounding clothes in the middle of the night.
Chang'an is as prosperous as the day, but she only sees the night. Right and wrong in the world have their own laws. She only wrote one sentence at the end of the case - "The cause and effect is over, I will not judge right and wrong."
