木已成舟 (mù yǐ chéng zhōu) – lit. the timber has been turned into...

木

已

成

舟

m

ù

y

ǐ

c

h

é

n

g

z

h

ō

u

Definitions

1. lit. the timber has been turned into a boat already (idiom)
2. fig. what is done cannot be undone

Components