My name is Gu Yao, a corpse fisherman from the Yellow River, the eighteenth generation passed down to me.
Before his death, my grandfather left an iron rule: Don't fish out female corpses when you're young, don't fish out bronze utensils when the water rises, and when you see a bronze door—run away immediately!
That night I broke my vow and fished out a female corpse wrapped in iron chains. She had a bronze fish charm tied to her wrist, and the tattoo on her chest was my family's lost river map. Under the corpse-retrieving sampan, nine green lanterns were extinguished at the same time.
From then on, the Yellow River rose three feet every night, and the old graves in the village were moved collectively to the center of the river. Everyone said there was something knocking on the door at the bottom of the river. Only I could hear what the voice said--
"Descendants of the Gu family, it's up to you to open the door your grandfather closed back then."
I held my grandfather's corpse whip hidden at the bottom of the boat, and the eight-character prophecy he had never mentioned appeared on the whip: Nine twists and turns to lock the dragon into a trap, and one corpse can destroy all evil.