打棍子 [－－－]

Jyutping daa2 gwan3 zi2
Pinyin dǎ gùn zi

Definitions (CC-CEDICT)
  1. to bludgeon
  2. to hit with a big stick
Definitions (Wiktionary)
  1. verb, Mainland-China, figuratively
    to attack and persecute (politically)