濫竽充數〔滥--数〕 laam⁶ jyu⁴ cung¹ sou³ {làn yú chōng shù}

1. lit. to play the yu 竽 mouth organ to make up numbers (idiom); fig. to make up the numbers with inferior products
2. to masquerade as having an ability
3. token member of a group