溫故知新 wēn gù zhī xīn

DEFINITIONS

  1. to review the old and know the new (idiom, from the Analects)
  2. to recall the past to understand the future

CHARACTERS

溫 wēn lukewarm, warm; tepid, mild
故 gù
HSK 3
ancient, old; reason, because
知 zhī
HSK 2
know, perceive, comprehend
新 xīn
HSK 2
new, recent, fresh, modern