老奸巨猾

lǎo jiān jù huá

cunning

crafty; wily old fox

老

lǎo

prefix used before the surname of a person or a numeral indicating the order of birth of the children in a family or to indicate affection or familiarity

奸

jiān

to fornicate

巨

jù

variant of 巨[ju4]

猾

huá

sly