前车之覆，后车之鉴

qián chē zhī fù , hòu chē zhī jiànqianchezhifu,houchezhijian

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

Study it in Yanamino