The Wu Xing, (五行 wŭ xíng) also known as the Five Elements, Five Phases, the Five Agents, the Five Movements, Five Processes, and theFive Steps/Stages, is a fivefold conceptual scheme that many traditional Chinese fields used to explain a wide array of phenomena, from cosmic cycles to the interaction between internal organs, and from the succession of political regimes to the properties of medicinal drugs. The “Five Phases” are Wood (木 mù), Fire (火 huǒ), Earth (土 tǔ), Metal (金 jīn), and Water (水 shuǐ). This order of presentation is known as the “mutual generation” (xiangsheng 相生) sequence. In the order of “mutual conquest” (xiangsheng 相勝) or “mutual overcoming” (xiangke 相剋), they are Wood, Earth, Water, Fire, and Metal. “Wu Xing” is often translated as Five Elements and this is used extensively by many including practitioners of Five Element acupuncture.