Origin

This character appears to be formed by combining the "sun" or "day" radical (the box shape) with the component for "revolve" or "turn." The character depicts something moving in a circular path around a central point, much like the sun's apparent rotation across the sky. Over time, the visual representation evolved into the current form, but the core idea of circular motion or rotation remained. The character came to represent both physical spinning and the broader concept of things going around in cycles.