前车之覆，后车之鉴

前車之覆，後車之鑒

拼音

qian2 che1 zhi1 fu4 , hou4 che1 zhi1 jian4

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

once bitten twice shy