chéng​kāi​bù​yè

a city that never sleeps

Senses

城开不夜/ 城開不夜 chéng​kāi​bù​yè (also chéng​kāi​bú​yè) a city that never sleeps

Originally described city gates being kept open all night without a curfew; currently used to describe a city or place that is bustling and lively through the entire night.

References

synonym 城开不夜/城開不夜 金吾不禁/金吾不禁