夜以继日

夜以繼日

yèyǐjìrì

idiom HSK 7 #17,715

Meanings

Literally: 'night continues into day' — working through the night into the next day without stopping.

Kēxuéjiāmen yèyǐjìrì de zuò shíyàn.

The scientists worked on experiments day and night.

Wèile wánchéng xiàngmù, tāmen yèyǐjìrì de jiābān.

To finish the project, they worked overtime around the clock.

usage

Often used with 地 as an adverb before a verb: 夜以继日地工作. Emphasizes tireless effort and dedication.

history

This idiom originates from the Book of Documents (《尚书》), describing King Wu's relentless efforts.

夜 yè

以 yǐ

继 jì

日 rì