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Jyutping tou3 gu3 naap6 san1
Pinyin tǔ gù nà xīn

Definitions (CC-CEDICT)
  1. lit. to breathe out stale air and breathe in fresh (idiom, from Zhuangzi 莊子|庄子[Zhuang1 zi3]); fig. to get rid of the old and bring in the new
Definitions (Wiktionary)
  1. phrase, idiomatic
    breathing technique to rejuvenate
  2. phrase, idiomatic
    get rid of the stale and take in the fresh
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)