一步錯，步步錯 [－－错－－－错]

Jyutping jat1 bou6 co3 ， bou6 bou6 co3
Pinyin yī bù cuò ， bù bù cuò

Definitions (Wiktionary)
  1. proverb
    One mistake triggers the next. (Used to advise people not to do the wrong thing.)
  2. proverb
    If the ones in front make a misstep, then all the ones following will likewise make a misstep.