xíng​bǎi​lǐ​zhě​bàn​jiǔ​shí

the last bit of a task is the hardest

行百里者半九十 xíng​bǎi​lǐ​zhě​bàn​jiǔ​shí
the last bit of a task is the hardest
literally meaning that ninety is only halfway on a hundred-mile journey; used as a metaphor to describe how a task becomes more difficult as it nears completion, or to encourage someone to persist until the very end

Frequency

Written text
0.064 per million

Sources

Frequency data
BCC Corpus (BLCU)