- 晨昏定省 chénhūndìngxǐng to pay respects to one's parentsto visit and care for one's parents in the morning and evening; a traditional etiquette for children serving their elders
- 晨昏颠倒 chénhūndiāndǎo to turn night into dayTo have one's daily schedule reversed, such as working at night and sleeping during the day