Origin

The character 城 combines the component 土 (earth) on the left, which indicates this character relates to something made of earth or soil, with 成 on the right, which serves as a sound hint for pronunciation. Castles were traditionally built from earth and stone fortifications, so the earth radical makes sense as a classifier. The right component tells you roughly how to pronounce the character rather than adding to its meaning. Together, the shape visually suggests a fortified structure built from earth.

AI-generated (claude-haiku-4-5), not yet reviewed. Formation type (automated guess): Phono-semantic (meaning + sound hint).