ㄅㄨˋㄨㄟˊˇㄕㄣˋbùwéi‑yǐshèn

不为已甚
  1. 過分過分)​。責罰批評適可而止 責備小孩適可而止不為已甚」。

refrain from going to extremes in meting out punishment, not be too hard on subject