雷公打豆腐 [－－－－－]

Jyutping leoi4 gung1 daa2 dau6 fu6
Pinyin léi gōng dǎ dòu fu

Definitions (CC-CEDICT)
  1. the God of Thunder strikes bean curd
  2. fig. to bully the weakest person
  3. to pick on an easy target