ˋㄗㄨˊshīzúㄔㄥˊchéngㄑㄧㄢㄍㄨˇqiāngǔㄏㄣˋhèn

yī shīzú chéng qiāngǔ hènㄧ ㄕ ㄗㄨˊ ㄔㄥˊ ㄑㄧㄢ ㄍㄨˇ ㄏㄣˋ
  1. 失誤犯錯造成永久遺憾 一失足成千古恨回頭百年」。

lit. one wrong step causes thousand hatred (idiom)​, A single slip may cause lasting sorrow.