What is "nucai"

Nucai (; Manchu: Aha) is a Chinese term that can be translated as, 'lackey', 'yes-man', 'servant', 'slave', or a 'person of unquestioning obedience'. It originated in the tribes of northeastern China as a negative and derogatory term, often reserved for insult for someone perceived to be useless or incompetent. However, it was used most prominently in the Qing dynasty as a deprecatory first-person pronoun by Manchu officials at court when addressing the Emperor. Han Chinese officials were forbidden from using the term for self-address; they used "chen" instead.