ㄕㄜˋㄕㄨˇㄔㄥˊㄏㄨˊshèshǔ‑chénghú

  1. 土地廟老鼠城牆狐狸比喻仗勢作惡城狐社鼠」。 社鼠城狐令人髮指」。

lit. rat in a country shrine, fox on town walls; fig. unprincipled thugs who abuse others' power to bully and exploit people