人不可貌相

rén bù kě mào xiàng

you can't judge a person by appearance (idiom)

you can't judge a book by its cover; often in combination 人不可貌相,海水不可斗量[ren2 bu4 ke3 mao4 xiang4 , hai3 shui3 bu4 ke3 dou3 liang2]

rén

person; people

no; not so

(prefix) can; may; able to; -able

mào

(bound form) appearance; looks; outward form

xiàng

appearance