- 一朝一夕 yīzhāoyīxī short period of timea single morning and evening; overnight; a very short time
- 一朝天子一朝臣 yīcháotiānzǐyīcháochén new chief brings new aides(saying) a new emperor brings with him his own court; used to describe how a new leader or manager replaces the existing staff with their own trusted subordinates.
- 一朝之忿 yīzhāozhīfèn outburst of angera sudden or momentary outburst of anger and resentment
- 一朝被蛇咬，十年怕井绳 yīzhāobèishéyǎoshíniánpàjǐngshéng once bitten, twice shyLiterally "once bitten by a snake, for ten years one fears a well rope"; used to describe being overly cautious after a single traumatic experience.
- 养兵千日，用在一朝 yǎngbīngqiānrìyòngzàiyīzhāo extensive preparation eventually pays offLiterally "to train an army for a thousand days to use it for one morning"; long-term preparation is necessary for a single moment of crisis or opportunity.
