Forgive and Forget in Chinese / Japanese...

水に流す is a Japanese proverb that suggests that “water continues to flow.”

It's similar to our English phrase, “Water under the bridge.” The perceived meaning is, “Forgive and forget.”

I have also seen this translated as “Don't cry over spilled milk.”

Note: Because this selection contains some special Japanese Hiragana characters, it should be written by a Japanese calligrapher.

略跡原情 is a Chinese proverb that means “to overlook past faults,” or “forgive and forget.”

It's more literally, “Abridge or make small the scars from your past emotions.” You should let it go.

The character breakdown:
略 (lüè) abbreviation; omission; abridge.
跡 (jī) ruins; scar; traces.
原 (yuán) former.
情 (qíng) feeling; emotion.

不念舊惡 is a Chinese proverb that can be translated as “Do not recall old grievances,” or more simply as “Forgive and forget.”

The character breakdown:
不 (bù) not; no; don't.
念 (niàn) read aloud.
舊 (jiù) old; former.
惡 (è) wicked deeds; grievances; sins.

This proverb comes from the Analects of Confucius.