既往不咎

jì wǎng bù jiù yán guī yú hǎo

既往不咎，言归于好

wipe the slate clean and be friends again

guò qù de shì qing jì wǎng bù jiù yǐ hòu nǐ kě děi zhù yì

过去的事情既往不咎，以后你可得注意。

We'll overlook what you did in the past, but you'd better watch out in the future.

wǒ men de guān diǎn shì jì wǎng bù jiù

我们的观点是既往不咎。

Our opinion is one of letting bygones be bygones.

tā chéng shú lǎo liàn duì shì yī xiào liǎo zhī jì wǎng bù jiù

他成熟老练，对事一笑了之，既往不咎。

He is sophisticated enough to laugh things off and let bygones be bygones.