吐故纳新 (tǔ gù nà xīn) | Meaning: lit. to breathe out stale air and breathe in fresh (idiom, from Zhuangzi); fig. to get rid of the old and bring in the new | Chinese Idiom with Pinyin & Origin

to push out the old and bring in the new (idiom); to innovate推陈出新tuī chén chū xīn

metabolism (biology) · the new replaces the old (idiom)新陈代谢xīn chén dài xiè

usher out the old, greet the new · esp. to see in the New Year送旧迎新sòng jiù yíng xīn

to get rid of the old to bring in the new (idiom); to innovate破旧立新pò jiù lì xīn

to discard the old and introduce the new (idiom); to innovate革故鼎新gé gù dǐng xīn

lit. to breathe out stale air and breathe in fresh (idiom, from Zhuangzi); fig. to get rid of the old and bring in the new