The word 干净 (gānjìng, meaning "clean") is formed through a semantic compound structure, where two independent characters with related meanings are combined to create a new, more specific concept. The first character, 干, originally conveys the idea of "dry" or "free from moisture", while the second, 净, means "clean" or "pure". They are placed side-by-side in a parallel relationship, where their individual meanings synergize and refine each other; the concept of being dry merges with the concept of being pure, together evoking the complete and holistic state of cleanliness, free from both wetness and dirt.