Fú Xī is a foundational figure in Chinese mythology, revered as one of the Three Sovereigns and credited with inventing writing, fishing nets, musical instruments, and the Eight Trigrams (bagua). Though not an animal himself, he is often depicted with a serpent’s body—symbolizing wisdom and transformation—and thus appears in classical texts alongside animal-related cosmological imagery. The character 伏 (Fú) means 'to crouch' or 'to subdue', suggesting mastery over chaos, while 羲 (Xī) is an ancient, largely phonetic character associated with light, order, and ritual harmony.

In traditional narratives, Fú Xī and his sister-wife Nǚ Wā are said to have repopulated humanity after a great flood, sometimes shown with intertwined serpent tails—a motif linking him to primordial forces and animal symbolism. He appears frequently in Daoist cosmology, art, and historical chronicles like the Shiji, always as a culture hero who brought structure to nature. Modern usage is almost exclusively mythological or academic; you’ll encounter him in discussions of early Chinese philosophy, archaeology, or cultural origins—not in daily conversation.