a thousand milesLiterally, “a thousand li,” where 리 is a traditional unit of distance. Often used figuratively for a very long distance, especially in proverbs such as 천 리 길도 한 걸음부터 (A journey of a thousand miles begins with a single step).
KO: 천 리 길도 한 걸음부터라고 하잖아요.
EN: They say a journey of a thousand miles begins with a single step.