不敢越雷池一步 (bat1 gam2 jyut6 leoi4 ci4 jat1 bou6) — dare not go one step beyond the prescribed limit in Cantonese
batˉ¹不gamˊ²敢jyutˍ₆越leoiˎ₄雷ciˎ₄池jatˉ¹一bouˍ₆步Mandarin Pinyin: bu4 gan3 yue4 lei2 chi2 yi1 bu4
Meaning of 不敢越雷池一步
noundare not go one step beyond the prescribed limit