He is the Ruler of the Second Court of FENG-DU, the Chinese Hell. This is where you find the Pool of Filth and the Hell of Ice.
Depravity and perversion are punished by slow drowning in a putrid stinking cesspit of yukkiness, full of unspeakable stench and horrid floating things. If the filth doesn’t get you, the smell will.
On the other hand, the Hell of Ice is reserved for those who have taken liberties with other people’s lives. That includes incompetent doctors, kidnappers and arrogant matchmakers. Such crimes are punished by being thrown into cold water and then frozen into an icicle. There you stay for the duration of your punishment. You get used to the cold, but the hunger and thirst are too much to bear.
QU-JIANG-WANG also seems to manage the Hell of Sword Forest. Iron trees grow here — and every leaf is a blade. Lustful souls and rapists are brought naked into the forest, where they see beautiful women at the top of each tree. Unable to control their sexual desire, they clamber up the trees, with extremely nasty — and messy — results.