光说不做 guāng shuō bù zuò

DEFINITIONS

  1. all talk and no action (idiom)
  2. to preach what one does not practice

CHARACTERS

光 guāng
HSK 4
light, brilliant, shine; only
说 shuō
HSK 1
speak, say, talk; scold, upbraid
不 bù
HSK 1
no, not; un-; negative prefix
做 zuò
HSK 1
work, make; act