士兵 (shì bīng) means 'soldier'—specifically an individual enlisted person in an armed force, such as an army, navy, or air force. The character 士 (shì) originally meant 'scholar' or 'gentleman' in ancient China but evolved to denote a professional warrior or officer; 兵 (bīng) means 'soldier', 'troop', or 'weapon', and together they emphasize the human role within military structure—not equipment or strategy, but the person serving. This term is neutral and formal, commonly used in news reports, historical texts, and official contexts.

Unlike broader terms like 军队 (jūn duì, 'armed forces') or more specialized ones like 将军 (jiāng jūn, 'general'), 士兵 always refers to rank-and-file personnel—typically conscripts or non-commissioned troops. It’s not used for police officers (警察, jǐng chá) or paramilitary personnel unless formally integrated into the military chain of command. The word carries no inherent connotation of bravery or danger; context determines tone.