唾面自乾 [－－－干]

Jyutping to3 min6 zi6 gon1
Pinyin tuò miàn zì gān

Definitions (CC-CEDICT)
  1. to be spat on in the face and let it dry by itself, not wiping it off (idiom); to turn the other cheek
  2. to drain the cup of humiliation