shè shǔ chéng hú ㄕㄜˋ ㄕㄨˇ ㄔㄥˊ ㄏㄨˊ 社鼠城狐 ◎ 社鼠城狐 shèshǔ-chénghú[officials who take advantage of others power to bully people] 城狐社鼠。比喻依仗权势为非作歹而又不易清除的坏人 不堤防柙虎樊熊,任纵横社鼠城孤。——清· 洪??《长生殿》
lit. rat in a country shrine, fox on town walls; fig. unprincipled thugs who abuse others' power to bully and exploit people