阴间 (Underworld) refers to a realm in various cultures where souls go after death. It is often depicted as a place of rest or punishment, depending on the beliefs of the society. In Chinese mythology, the Underworld is governed by Yama, the king of the dead, who judges the souls and determines their fate. In many traditions, the Underworld serves as a bridge between the living and the dead. It is a place where ancestral spirits reside, and rituals are performed to honor them. The concept of the Underworld varies widely, influencing literature, art, and religious practices across different cultures.