Booi Aha

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Booi Aha (Manchu: ᠪᠣᠣᡳ ᠨᡳᠶᠠᠯᠮᠠ (booi niyalma) for male, ᠪᠣᠣᡳ ᡥᡝᡥᡝ (booi hehe) for female; Chinese transliteration: 包衣阿哈) is a Manchu word literally meaning "household person", referring to hereditarily servile people in the Eight Banner system in 17th-century Qing China. It is often directly translated as "bondservant", although sometimes also simply rendered as the common word, slave, or more specifically within Chinese social and political context as nucai.

They were largely divided into three categories translated into English:

company servants (Chinese: 佐領下人; Chinese: zuǒlǐng xiàrén)
half-company servants (Chinese: 管領下人; Chinese: guǎnlǐng xiàrén)
estate bannermen (Chinese: 莊頭旗人; Chinese: zhuāngtóu qírén)