悔之无及 (huǐ zhī wú jí) | Meaning: too late for regrets (idiom); It is useless to repent after the event. | Chinese Idiom with Pinyin & Origin

to feel remorse and shame (idiom)悔恨交加huǐ hèn jiāo jiā

to regret one's past deeds (idiom)悔不当初huǐ bù dāng chū

too late for regrets (idiom); It is useless to repent after the event.后悔莫及hòu huǐ mò jí

too late for regrets (idiom); It is useless to repent after the event.