省力 (shěng lì) literally combines 省 (to save, reduce) and 力 (effort, energy or physical strength), meaning 'to save effort' or 'to require less energy'. It describes something that is efficient, effortless, or designed to minimize exertion — whether in physical tasks, mental work, or technological tools. The term carries a positive connotation, often implying smart design or practical wisdom.

It’s commonly used as an adjective before nouns (e.g., 省力的方法 — an effort-saving method) or as a verb in constructions like 这个工具很省力 (This tool saves effort). While it can describe people’s actions (e.g., 他做事很省力 — He does things with minimal effort), it more frequently modifies objects, methods, or systems. It appears often in daily life — from kitchen gadgets and apps to exercise techniques and study strategies — wherever efficiency and reduced strain are valued.