(bound form) the underworld; relating to the spirits of the dead or ghosts

(bound form) to imprison; to confine; to keep behind closed doors

(bound form) secluded; remote; quiet and peaceful

(bound form) dim; dark; hidden from view

(bound form) secret; hidden; kept in one's heart

(bound form) ancient name for a geographic region in northern China, covering parts of modern-day Hebei and Liaoning

a Chinese surname