He Xuan, known as Black Water Submerging Boats, is a supreme-ranked ghost and one of the Four Great Calamities in "Heaven Official's Blessing." Formerly a devoted and honest human, his transformation into a vengeful ghost was driven by the injustices and betrayals he faced. He meticulously masks his hatred to exact revenge on those who wronged him, demonstrating a complex blend of patience, intelligence, and a deep sense of loyalty and fairness.