吐故納新

tǔgùnàxīn ㄊㄨˇ ㄍㄨˋ ㄋㄚˋ ㄒㄧㄣ

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

Save the words and sentences you find here to your own list, and hear them read aloud. You can export the list to your flashcards whenever you like.