chéng​qián​bì​hòu

to learn from past mistakes

Senses

惩前毖后/ 懲前毖後 chéng​qián​bì​hòu to learn from past mistakes

to learn from previous errors or failures to avoid repeating them in the future; to criticize past mistakes firmly to ensure they do not happen again

References

see 惩/懲 惩前毖后/懲前毖後
see 毖/毖 惩前毖后/懲前毖後