Origin

This character shows a person (人) enclosed within a box or enclosure (囗), which appears twice — once on the left and once on the right — to emphasize confinement. The visual idea of a human figure trapped or boxed in directly expresses the meaning of being captured or imprisoned. The doubled enclosure makes the sense of restraint even clearer, transforming a simple picture of confinement into the concept of a criminal or captive person.