Diyu

Diyu is the Chinese underworld, a layered and, in most developed accounts, explicitly bureaucratic realm administered by a hierarchy of courts and judges through which every soul must pass after death, reflecting a broader Chinese cultural habit of imagining the unseen world as organised along the same administrative lines as the imperial state itself. The concept synthesises indigenous Chinese ideas about the dead and the underworld, older terms such as Huangquan and Fengdu, with Buddhist cosmology imported from India, particularly the ten courts and their judges, resulting in a distinctly Chinese hybrid rather than a straightforward import of either Indian Naraka or any single native precursor.

James Watson and Evelyn Rawski's study of Chinese death ritual notes that Diyu's bureaucratic imagery is not merely decorative but functionally connects the underworld directly to actual Chinese funerary and memorial practice, since paper money, paper houses, and other burnt offerings sent to the dead are explicitly understood as payments or resources meant to help a soul navigate Diyu's courts, bribe or satisfy its officials, and eventually secure a favourable rebirth, making the realm's administrative character a live, practically consequential belief rather than only a cosmological curiosity.

Diyu as a unified system is a comparatively late synthesis, and Chinese Mythology scholarship traces its major components to distinct earlier sources that only merged gradually over centuries: Huangquan, the Yellow Springs, is the older, pre-Buddhist Chinese term for the underworld found in classical texts, imagined simply as the place beneath the earth where the dead go, largely without the elaborate moral machinery added later; Fengdu, by contrast, developed as a specific mythological city of the dead associated with a real place in Sichuan province, gaining its own city god and administrative apparatus through popular Daoist and folk religious elaboration; and the full apparatus of ten courts, each headed by its own king or judge and specialising in particular categories of sin and punishment, arrived through the deep influence of Buddhist Naraka cosmology as it spread into China and merged with these existing native concepts. The Ghost Festival, Zhongyuan, depends directly on Diyu's administrative logic, since its central premise, that the gates of the underworld open once a year to release the dead, only makes sense within a system that treats Diyu as a place with actual gates, courts and controlled admission rather than an undifferentiated shadow realm.