嘴上沒毛，辦事不牢

a youth without facial hair cannot be relied upon (proverb)

mouth / beak / nozzle / spout (of teapot etc) / CL:張|张[zhang1],個|个[ge4]

used in 上聲|上声[shang3 sheng1]

(bound form) up; upper; above; previous / first (of multiple parts) / to climb; to get onto; to go up / to attend (class or university) / (directional complement) up / (noun suffix) on; above

(negative prefix for verbs) / have not / not

drowned / to end / to die / to inundate

(negative prefix for verbs) have not; not

surname Mao

hair / feather / down / wool / mildew / mold / coarse or semifinished / young / raw / careless / unthinking / nervous / scared / (of currency) to devalue or depreciate / classifier for Chinese fractional monetary unit ( = 角[jiao3] , = one-tenth of a yuan or 10 fen 分[fen1])

to do / to manage / to handle / to go about / to run / to set up / to deal with

to handle (affairs) / to work

matter / thing / item / work / affair / CL:件[jian4],樁|桩[zhuang1],回[hui2]

no; not so / (bound form) not; un-

firm / sturdy / fold (for animals) / sacrifice / prison