獅子撲兔 [狮－扑－]

Jyutping si1 zi2 pok3 tou3
Pinyin shī zǐ pū tù

Definitions (粵典–words.hk)
  1. 語句
    大蝦​細
    abusing one's strength to bully others; literally: lion hunts rabbit
  2. 語句
    就算​小事​都​全力以赴
    to do minor thing with all one's strength