滥竽充数 làn yú chōng shù:sham/an ancient Chinese reed instrument like a pipe/pass off/number
to pass oneself off as one of the players in an ensemble.the saying means to be there just to make up the number.
吹:chuī,to blow/play
竽:an ancient wind instrument
待遇: dài yù treatment,pay,salary
独奏 dú zòu:solo