人心难测 rén xīn nán cè

DEFINITIONS

  1. hard to fathom a person's mind (idiom)

CHARACTERS

人 rén
HSK 1
man; people; mankind; someone else
心 xīn
HSK 3
heart; mind, intelligence; soul
难 nán
HSK 3
difficult, arduous, hard; unable
测 cè
HSK 5
measure, estimate, conjecture