新故代谢 [xīn gù dài xiè]
[ㄒㄧㄣ ㄍㄨˋ ㄉㄞˋ ㄒㄧㄝ ˋ]
Same as “metabolism”.
Source of idioms
Han Cai Yong’s “Lan Fu”: “The metabolism of the new old is also four times.”
Used as an object and attributive; used in written language