左膀右臂 Traditional form: 左膀右臂 Pinyin (reading): zuǒbǎngyòubì Definitions: trusted assistant; key aide Characters: 左 - left; unorthodox, improper 膀 - shoulder, upper arm, wing 右 - right; right-wing 臂 - arm Traditional characters: 左 - left; unorthodox, improper 膀 - shoulder, upper arm, wing 右 - right; right-wing 臂 - arm