打虎拍蠅 [－－－蝇]

Jyutping daa2 fu2 paak3 jing4
Pinyin dǎ hǔ pāi yíng

Definitions (Wiktionary)
  1. phrase, bureaucratese, idiomatic, neologism
    to crack down on both “tigers” and “flies” ― corrupt government officials at both higher and lower levels