人不可貌相

1. • you can't judge a person by appearance (idiom)
2. • you can't judge a book by its cover
3. • often in combination 人不可貌相，海水不可斗量

Character by character

• 人(rén)person
• 不(bù)no
• 可(kě)can
• 貌(mào)appearance
• 相(xiàng)appearance