前车之鉴

lit. the cart in front overturns, a warning to the following cart (idiom); fig. draw lesson from the failure of one's predecessor; learn from past mistake

lit. warning to the following cart (idiom); don't follow the track of an overturned cart; fig. draw lesson from the failure of one's predecessor

don't forget past events, they can guide you in future (idiom); benefit from past experience

to learn from history (idiom)

lit. to punish those before to prevent those after (idiom); to criticize former mistakes firmly to prevent them happening again

lit. to follow in the tracks of an overturned cart (idiom); fig. to follow a path that led to failure in the past