打一巴掌揉三揉

dǎyībāzhangróusānróu ㄉㄚˇ ㄧ ㄅㄚ ˙ㄓㄤ ㄖㄡˊ ㄙㄢ ㄖㄡˊ

    • to combine harshness with kindness in order to control someone
    • carrot and stick

Character by character

Saying俗语俗語

Idiom惯用语 · Widely known

Literally
slap once, rub three times
Meaning
To combine harshness with kindness, hitting and then soothing, in order to control someone. Close to 'carrot and stick'.

Sources