Qin Tinglei, a corpse fisherman from the Yellow River, fished out a bronze coffin with his father's portrait engraved on it the first time he went into the river. On the night when the coffin was opened, the whole corpse-hunting village was silent, and hundreds of ghosts were knocking on the coffin; the father's human skin sat up from the coffin, and stuffed a bronze key with body temperature into his palm. Behind him, nine child corpses with dragon patterns all opened their eyes.
From then on, he listened to thunder and identified corpses, searched for dragons and pointed at acupoints. The ancestral corpse-finding ruler measured not the river, but the gap between the yin and yang worlds. While others were still fishing for floating corpses in the Yellow River to earn money, he could already drive the water charm that had sunk at the bottom of the river for eight hundred years to explore the way. Until the authorities came and asked him to retrieve a dragon coffin that had sunk in the Yellow River for thirty years - they said that the thing in the coffin had woken up, and the key his father left behind could just open the lock.